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brk/modules/brk-client/docs/classes/BrkClient.md
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[**brk-client**](../README.md)
***
[brk-client](../globals.md) / BrkClient
# Class: BrkClient
Defined in: [Developer/brk/modules/brk-client/index.js:7563](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L7563)
Main BRK client with series tree and API methods
## Extends
- `BrkClientBase`
## Constructors
### Constructor
> **new BrkClient**(`options`): `BrkClient`
Defined in: [Developer/brk/modules/brk-client/index.js:8743](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L8743)
#### Parameters
##### options
`string` \| [`BrkClientOptions`](../interfaces/BrkClientOptions.md)
#### Returns
`BrkClient`
#### Overrides
`BrkClientBase.constructor`
## Properties
### \_browserCache
> **\_browserCache**: `Cache` \| `null`
Defined in: [Developer/brk/modules/brk-client/index.js:1836](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L1836)
#### Inherited from
`BrkClientBase._browserCache`
***
### \_browserCachePromise
> **\_browserCachePromise**: `Promise`\<`Cache` \| `null`\>
Defined in: [Developer/brk/modules/brk-client/index.js:1834](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L1834)
#### Inherited from
`BrkClientBase._browserCachePromise`
***
### \_memCache
> **\_memCache**: `Map`\<`string`, [`_MemEntry`](../type-aliases/MemEntry.md)\<`unknown`\>\>
Defined in: [Developer/brk/modules/brk-client/index.js:1843](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L1843)
#### Inherited from
`BrkClientBase._memCache`
***
### series
> **series**: [`SeriesTree`](../interfaces/SeriesTree.md)
Defined in: [Developer/brk/modules/brk-client/index.js:8746](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L8746)
## Methods
### \_fetchSeriesData()
> **\_fetchSeriesData**\<`T`\>(`path`, `onValue?`): `Promise`\<[`DateSeriesData`](../type-aliases/DateSeriesData.md)\<`T`\>\>
Defined in: [Developer/brk/modules/brk-client/index.js:2072](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L2072)
Fetch series data and wrap with helper methods (internal)
#### Type Parameters
##### T
`T`
#### Parameters
##### path
`string`
##### onValue?
(`value`) => `void`
#### Returns
`Promise`\<[`DateSeriesData`](../type-aliases/DateSeriesData.md)\<`T`\>\>
#### Inherited from
`BrkClientBase._fetchSeriesData`
***
### \_getCached()
> **\_getCached**\<`T`\>(`path`, `parse`, `options?`): `Promise`\<`T`\>
Defined in: [Developer/brk/modules/brk-client/index.js:1907](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L1907)
Make a GET request with layered caching.
Contract:
- The returned Promise resolves with the **freshest** value (post-revalidation).
- `onValue` fires once with the freshest value, or twice if a stale snapshot
could be shown first (stale-while-revalidate). On a 304 there is no second fire.
Layers:
- L1 (memCache): in-memory parsed values keyed by URL+ETag. Lets 304s skip the parse entirely.
- L2 (browserCache): Cache API, survives reload and feeds onValue fast on cold start.
#### Type Parameters
##### T
`T`
#### Parameters
##### path
`string`
##### parse
(`res`) => `Promise`\<`T`\>
Response body reader
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`T`\>
#### Inherited from
`BrkClientBase._getCached`
***
### \_memGet()
> **\_memGet**\<`T`\>(`key`): [`_MemEntry`](../type-aliases/MemEntry.md)\<`T`\> \| `undefined`
Defined in: [Developer/brk/modules/brk-client/index.js:1851](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L1851)
#### Type Parameters
##### T
`T`
#### Parameters
##### key
`string`
#### Returns
[`_MemEntry`](../type-aliases/MemEntry.md)\<`T`\> \| `undefined`
#### Inherited from
`BrkClientBase._memGet`
***
### \_memSet()
> **\_memSet**(`key`, `etag`, `value`): `void`
Defined in: [Developer/brk/modules/brk-client/index.js:1865](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L1865)
#### Parameters
##### key
`string`
##### etag
`string` \| `null`
##### value
`unknown`
#### Returns
`void`
#### Inherited from
`BrkClientBase._memSet`
***
### dateToIndex()
> **dateToIndex**(`index`, `d`): `number`
Defined in: [Developer/brk/modules/brk-client/index.js:8735](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L8735)
Convert a Date to an index value for date-based indexes.
#### Parameters
##### index
[`Index`](../type-aliases/Index.md)
The index type
##### d
`Date`
The date to convert
#### Returns
`number`
***
### get()
> **get**(`path`, `options?`): `Promise`\<`Response`\>
Defined in: [Developer/brk/modules/brk-client/index.js:1880](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L1880)
#### Parameters
##### path
`string`
##### options?
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`Response`\>
#### Inherited from
`BrkClientBase.get`
***
### getAddress()
> **getAddress**(`address`, `options?`): `Promise`\<[`AddrStats`](../interfaces/AddrStats.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:10969](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L10969)
Address information
Retrieve address information including balance and transaction counts. Supports all standard Bitcoin address types (P2PKH, P2SH, P2WPKH, P2WSH, P2TR).
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-address)*
Endpoint: `GET /api/address/{address}`
#### Parameters
##### address
`string`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`AddrStats`](../interfaces/AddrStats.md)\>
***
### getAddressConfirmedTxs()
> **getAddressConfirmedTxs**(`address`, `options?`): `Promise`\<[`Transaction`](../interfaces/Transaction.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:11005](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11005)
Address confirmed transactions
Get the first 25 confirmed transactions for an address. For pagination, use the path-style form `/txs/chain/{last_seen_txid}`.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-address-transactions-chain)*
Endpoint: `GET /api/address/{address}/txs/chain`
#### Parameters
##### address
`string`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`Transaction`](../interfaces/Transaction.md)[]\>
***
### getAddressConfirmedTxsAfter()
> **getAddressConfirmedTxsAfter**(`address`, `after_txid`, `options?`): `Promise`\<[`Transaction`](../interfaces/Transaction.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:11024](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11024)
Address confirmed transactions (paginated)
Get the next 25 confirmed transactions strictly older than `after_txid` (Esplora-canonical pagination form, matches mempool.space).
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-address-transactions-chain)*
Endpoint: `GET /api/address/{address}/txs/chain/{after_txid}`
#### Parameters
##### address
`string`
##### after\_txid
`string`
Last txid from the previous page (return transactions strictly older than this)
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`Transaction`](../interfaces/Transaction.md)[]\>
***
### getAddressMempoolTxs()
> **getAddressMempoolTxs**(`address`, `options?`): `Promise`\<[`Transaction`](../interfaces/Transaction.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:11042](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11042)
Address mempool transactions
Get unconfirmed transactions for an address from the mempool, newest first (up to 50).
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-address-transactions-mempool)*
Endpoint: `GET /api/address/{address}/txs/mempool`
#### Parameters
##### address
`string`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`Transaction`](../interfaces/Transaction.md)[]\>
***
### getAddressTxs()
> **getAddressTxs**(`address`, `options?`): `Promise`\<[`Transaction`](../interfaces/Transaction.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:10987](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L10987)
Address transactions
Get transaction history for an address, newest first. Returns up to 50 mempool transactions plus a confirmed page sized to fill the response to 50 total (chain floor of 25, so 25-50 confirmed depending on mempool weight). To paginate further confirmed history, use `/address/{address}/txs/chain/{last_seen_txid}`.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-address-transactions)*
Endpoint: `GET /api/address/{address}/txs`
#### Parameters
##### address
`string`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`Transaction`](../interfaces/Transaction.md)[]\>
***
### getAddressUtxos()
> **getAddressUtxos**(`address`, `options?`): `Promise`\<[`Utxo`](../interfaces/Utxo.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:11060](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11060)
Address UTXOs
Get unspent transaction outputs (UTXOs) for an address. Returns txid, vout, value, and confirmation status for each UTXO.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-address-utxo)*
Endpoint: `GET /api/address/{address}/utxo`
#### Parameters
##### address
`string`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`Utxo`](../interfaces/Utxo.md)[]\>
***
### getApi()
> **getApi**(`options?`): `Promise`\<`any`\>
Defined in: [Developer/brk/modules/brk-client/index.js:12127](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L12127)
Compact OpenAPI specification
Compact OpenAPI specification optimized for LLM consumption. Removes redundant fields while preserving essential API information. Full spec available at `/openapi.json`.
Endpoint: `GET /api.json`
#### Parameters
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`any`\>
***
### getBlock()
> **getBlock**(`hash`, `options?`): `Promise`\<[`BlockInfo`](../interfaces/BlockInfo.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:11096](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11096)
Block information
Retrieve block information by block hash. Returns block metadata including height, timestamp, difficulty, size, weight, and transaction count.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-block)*
Endpoint: `GET /api/block/{hash}`
#### Parameters
##### hash
`string`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`BlockInfo`](../interfaces/BlockInfo.md)\>
***
### getBlockByHeight()
> **getBlockByHeight**(`height`, `options?`): `Promise`\<`string`\>
Defined in: [Developer/brk/modules/brk-client/index.js:11150](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11150)
Block hash by height
Retrieve the block hash at a given height. Returns the hash as plain text.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-block-height)*
Endpoint: `GET /api/block-height/{height}`
#### Parameters
##### height
`number`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`string`\>
***
### getBlockByTimestamp()
> **getBlockByTimestamp**(`timestamp`, `options?`): `Promise`\<[`BlockTimestamp`](../interfaces/BlockTimestamp.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:11168](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11168)
Block by timestamp
Find the block closest to a given UNIX timestamp.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-block-timestamp)*
Endpoint: `GET /api/v1/mining/blocks/timestamp/{timestamp}`
#### Parameters
##### timestamp
`number`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`BlockTimestamp`](../interfaces/BlockTimestamp.md)\>
***
### getBlockFeeRates()
> **getBlockFeeRates**(`time_period`, `options?`): `Promise`\<[`BlockFeeRatesEntry`](../interfaces/BlockFeeRatesEntry.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:11659](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11659)
Block fee rates
Get block fee rate percentiles (min, 10th, 25th, median, 75th, 90th, max) for a time period. Valid periods: `24h`, `3d`, `1w`, `1m`, `3m`, `6m`, `1y`, `2y`, `3y`.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-block-feerates)*
Endpoint: `GET /api/v1/mining/blocks/fee-rates/{time_period}`
#### Parameters
##### time\_period
[`TimePeriod`](../type-aliases/TimePeriod.md)
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`BlockFeeRatesEntry`](../interfaces/BlockFeeRatesEntry.md)[]\>
***
### getBlockFees()
> **getBlockFees**(`time_period`, `options?`): `Promise`\<[`BlockFeesEntry`](../interfaces/BlockFeesEntry.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:11623](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11623)
Block fees
Get average total fees per block for a time period. Valid periods: `24h`, `3d`, `1w`, `1m`, `3m`, `6m`, `1y`, `2y`, `3y`.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-block-fees)*
Endpoint: `GET /api/v1/mining/blocks/fees/{time_period}`
#### Parameters
##### time\_period
[`TimePeriod`](../type-aliases/TimePeriod.md)
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`BlockFeesEntry`](../interfaces/BlockFeesEntry.md)[]\>
***
### getBlockHeader()
> **getBlockHeader**(`hash`, `options?`): `Promise`\<`string`\>
Defined in: [Developer/brk/modules/brk-client/index.js:11132](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11132)
Block header
Returns the hex-encoded 80-byte block header.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-block-header)*
Endpoint: `GET /api/block/{hash}/header`
#### Parameters
##### hash
`string`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`string`\>
***
### getBlockRaw()
> **getBlockRaw**(`hash`, `options?`): `Promise`\<`Uint8Array`\<`ArrayBufferLike`\>\>
Defined in: [Developer/brk/modules/brk-client/index.js:11186](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11186)
Raw block
Returns the raw block data in binary format.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-block-raw)*
Endpoint: `GET /api/block/{hash}/raw`
#### Parameters
##### hash
`string`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`Uint8Array`\<`ArrayBufferLike`\>\>
***
### getBlockRewards()
> **getBlockRewards**(`time_period`, `options?`): `Promise`\<[`BlockRewardsEntry`](../interfaces/BlockRewardsEntry.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:11641](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11641)
Block rewards
Get average coinbase reward (subsidy + fees) per block for a time period. Valid periods: `24h`, `3d`, `1w`, `1m`, `3m`, `6m`, `1y`, `2y`, `3y`.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-block-rewards)*
Endpoint: `GET /api/v1/mining/blocks/rewards/{time_period}`
#### Parameters
##### time\_period
[`TimePeriod`](../type-aliases/TimePeriod.md)
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`BlockRewardsEntry`](../interfaces/BlockRewardsEntry.md)[]\>
***
### getBlocks()
> **getBlocks**(`options?`): `Promise`\<[`BlockInfo`](../interfaces/BlockInfo.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:11326](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11326)
Recent blocks
Retrieve the last 10 blocks. Returns block metadata for each block.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-blocks)*
Endpoint: `GET /api/blocks`
#### Parameters
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`BlockInfo`](../interfaces/BlockInfo.md)[]\>
***
### getBlocksFromHeight()
> **getBlocksFromHeight**(`height`, `options?`): `Promise`\<[`BlockInfo`](../interfaces/BlockInfo.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:11344](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11344)
Blocks from height
Retrieve up to 10 blocks going backwards from the given height. For example, height=100 returns blocks 100, 99, 98, ..., 91. Height=0 returns only block 0.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-blocks)*
Endpoint: `GET /api/blocks/{height}`
#### Parameters
##### height
`number`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`BlockInfo`](../interfaces/BlockInfo.md)[]\>
***
### getBlockSizesWeights()
> **getBlockSizesWeights**(`time_period`, `options?`): `Promise`\<[`BlockSizesWeights`](../interfaces/BlockSizesWeights.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:11677](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11677)
Block sizes and weights
Get average block sizes and weights for a time period. Valid periods: `24h`, `3d`, `1w`, `1m`, `3m`, `6m`, `1y`, `2y`, `3y`.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-sizes-weights)*
Endpoint: `GET /api/v1/mining/blocks/sizes-weights/{time_period}`
#### Parameters
##### time\_period
[`TimePeriod`](../type-aliases/TimePeriod.md)
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`BlockSizesWeights`](../interfaces/BlockSizesWeights.md)\>
***
### getBlockStatus()
> **getBlockStatus**(`hash`, `options?`): `Promise`\<[`BlockStatus`](../interfaces/BlockStatus.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:11204](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11204)
Block status
Retrieve the status of a block. Returns whether the block is in the best chain and, if so, its height and the hash of the next block.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-block-status)*
Endpoint: `GET /api/block/{hash}/status`
#### Parameters
##### hash
`string`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`BlockStatus`](../interfaces/BlockStatus.md)\>
***
### getBlocksV1()
> **getBlocksV1**(`options?`): `Promise`\<[`BlockInfoV1`](../interfaces/BlockInfoV1.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:11360](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11360)
Recent blocks with extras
Retrieve the last 15 blocks with extended data including pool identification and fee statistics.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-blocks-v1)*
Endpoint: `GET /api/v1/blocks`
#### Parameters
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`BlockInfoV1`](../interfaces/BlockInfoV1.md)[]\>
***
### getBlocksV1FromHeight()
> **getBlocksV1FromHeight**(`height`, `options?`): `Promise`\<[`BlockInfoV1`](../interfaces/BlockInfoV1.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:11378](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11378)
Blocks from height with extras
Retrieve up to 15 blocks with extended data going backwards from the given height.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-blocks-v1)*
Endpoint: `GET /api/v1/blocks/{height}`
#### Parameters
##### height
`number`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`BlockInfoV1`](../interfaces/BlockInfoV1.md)[]\>
***
### getBlockTemplate()
> **getBlockTemplate**(`options?`): `Promise`\<[`BlockTemplate`](../interfaces/BlockTemplate.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:11833](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11833)
Projected next block template
Bitcoin Core's `getblocktemplate` selection: full transaction bodies in GBT order with aggregate stats. The returned `hash` is an opaque content token; pass it as `<hash>` on `/api/v1/mempool/block-template/diff/{hash}` to fetch deltas instead of refetching the whole template.
Endpoint: `GET /api/v1/mempool/block-template`
#### Parameters
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`BlockTemplate`](../interfaces/BlockTemplate.md)\>
***
### getBlockTemplateDiff()
> **getBlockTemplateDiff**(`hash`, `options?`): `Promise`\<[`BlockTemplateDiff`](../interfaces/BlockTemplateDiff.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:11849](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11849)
Block template diff since hash
Delta of the projected next block since `<hash>`. `order` is the full new template in order: each entry is either a number (index into the prior template the client cached at `<hash>`) or a transaction object (new body to insert at this position). Walk `order` once to rebuild; `removed` is a convenience list of txids that left so clients can evict cached bodies. After applying, use the response `hash` as `<hash>` on the next call to keep iterating. Returns `404` when `<hash>` has aged out of server history; clients should fall back to `/api/v1/mempool/block-template`.
Endpoint: `GET /api/v1/mempool/block-template/diff/{hash}`
#### Parameters
##### hash
`number`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`BlockTemplateDiff`](../interfaces/BlockTemplateDiff.md)\>
***
### getBlockTipHash()
> **getBlockTipHash**(`options?`): `Promise`\<`string`\>
Defined in: [Developer/brk/modules/brk-client/index.js:11236](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11236)
Block tip hash
Returns the hash of the last block.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-block-tip-hash)*
Endpoint: `GET /api/blocks/tip/hash`
#### Parameters
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`string`\>
***
### getBlockTipHeight()
> **getBlockTipHeight**(`options?`): `Promise`\<`number`\>
Defined in: [Developer/brk/modules/brk-client/index.js:11220](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11220)
Block tip height
Returns the height of the last block.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-block-tip-height)*
Endpoint: `GET /api/blocks/tip/height`
#### Parameters
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`number`\>
***
### getBlockTxid()
> **getBlockTxid**(`hash`, `index`, `options?`): `Promise`\<`string`\>
Defined in: [Developer/brk/modules/brk-client/index.js:11255](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11255)
Transaction ID at index
Retrieve a single transaction ID at a specific index within a block. Returns plain text txid.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-block-transaction-id)*
Endpoint: `GET /api/block/{hash}/txid/{index}`
#### Parameters
##### hash
`string`
Bitcoin block hash
##### index
`number`
Transaction index within the block (0-based)
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`string`\>
***
### getBlockTxids()
> **getBlockTxids**(`hash`, `options?`): `Promise`\<`string`[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:11273](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11273)
Block transaction IDs
Retrieve all transaction IDs in a block. Returns an array of txids in block order.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-block-transaction-ids)*
Endpoint: `GET /api/block/{hash}/txids`
#### Parameters
##### hash
`string`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`string`[]\>
***
### getBlockTxs()
> **getBlockTxs**(`hash`, `options?`): `Promise`\<[`Transaction`](../interfaces/Transaction.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:11291](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11291)
Block transactions
Retrieve transactions in a block by block hash. Returns up to 25 transactions starting from index 0.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-block-transactions)*
Endpoint: `GET /api/block/{hash}/txs`
#### Parameters
##### hash
`string`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`Transaction`](../interfaces/Transaction.md)[]\>
***
### getBlockTxsFromIndex()
> **getBlockTxsFromIndex**(`hash`, `start_index`, `options?`): `Promise`\<[`Transaction`](../interfaces/Transaction.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:11310](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11310)
Block transactions (paginated)
Retrieve transactions in a block by block hash, starting from the specified index. Returns up to 25 transactions at a time.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-block-transactions)*
Endpoint: `GET /api/block/{hash}/txs/{start_index}`
#### Parameters
##### hash
`string`
Bitcoin block hash
##### start\_index
`number`
Starting transaction index within the block (0-based)
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`Transaction`](../interfaces/Transaction.md)[]\>
***
### getBlockV1()
> **getBlockV1**(`hash`, `options?`): `Promise`\<[`BlockInfoV1`](../interfaces/BlockInfoV1.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:11114](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11114)
Block (v1)
Returns block details with extras by hash.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-block-v1)*
Endpoint: `GET /api/v1/block/{hash}`
#### Parameters
##### hash
`string`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`BlockInfoV1`](../interfaces/BlockInfoV1.md)\>
***
### getBytes()
> **getBytes**(`path`, `options?`): `Promise`\<`Uint8Array`\<`ArrayBufferLike`\>\>
Defined in: [Developer/brk/modules/brk-client/index.js:2000](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L2000)
Make a GET request expecting binary data (application/octet-stream).
Cached and supports `onValue`, same as `getJson`.
#### Parameters
##### path
`string`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`Uint8Array`\<`ArrayBufferLike`\>\>
#### Inherited from
`BrkClientBase.getBytes`
***
### getCpfp()
> **getCpfp**(`txid`, `options?`): `Promise`\<[`CpfpInfo`](../interfaces/CpfpInfo.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:11897](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11897)
CPFP info
Returns ancestors and descendants for a CPFP (Child Pays For Parent) transaction, including the effective fee rate of the package.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-children-pay-for-parent)*
Endpoint: `GET /api/v1/cpfp/{txid}`
#### Parameters
##### txid
`string`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`CpfpInfo`](../interfaces/CpfpInfo.md)\>
***
### getDifficultyAdjustment()
> **getDifficultyAdjustment**(`options?`): `Promise`\<[`DifficultyAdjustment`](../interfaces/DifficultyAdjustment.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:10914](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L10914)
Difficulty adjustment
Get current difficulty adjustment progress and estimates.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-difficulty-adjustment)*
Endpoint: `GET /api/v1/difficulty-adjustment`
#### Parameters
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`DifficultyAdjustment`](../interfaces/DifficultyAdjustment.md)\>
***
### getDifficultyAdjustments()
> **getDifficultyAdjustments**(`options?`): `Promise`\<[`DifficultyAdjustmentEntry`](../interfaces/DifficultyAdjustmentEntry.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:11569](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11569)
Difficulty adjustments (all time)
Get historical difficulty adjustments including timestamp, block height, difficulty value, and percentage change.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-difficulty-adjustments)*
Endpoint: `GET /api/v1/mining/difficulty-adjustments`
#### Parameters
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`DifficultyAdjustmentEntry`](../interfaces/DifficultyAdjustmentEntry.md)[]\>
***
### getDifficultyAdjustmentsByPeriod()
> **getDifficultyAdjustmentsByPeriod**(`time_period`, `options?`): `Promise`\<[`DifficultyAdjustmentEntry`](../interfaces/DifficultyAdjustmentEntry.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:11587](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11587)
Difficulty adjustments
Get historical difficulty adjustments for a time period. Valid periods: `24h`, `3d`, `1w`, `1m`, `3m`, `6m`, `1y`, `2y`, `3y`.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-difficulty-adjustments)*
Endpoint: `GET /api/v1/mining/difficulty-adjustments/{time_period}`
#### Parameters
##### time\_period
[`TimePeriod`](../type-aliases/TimePeriod.md)
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`DifficultyAdjustmentEntry`](../interfaces/DifficultyAdjustmentEntry.md)[]\>
***
### getDiskUsage()
> **getDiskUsage**(`options?`): `Promise`\<[`DiskUsage`](../interfaces/DiskUsage.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:10586](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L10586)
Disk usage
Returns the disk space used by BRK and Bitcoin data.
Endpoint: `GET /api/server/disk`
#### Parameters
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`DiskUsage`](../interfaces/DiskUsage.md)\>
***
### getFullrbfReplacements()
> **getFullrbfReplacements**(`options?`): `Promise`\<[`ReplacementNode`](../interfaces/ReplacementNode.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:11819](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11819)
Recent full-RBF replacements
Like `/api/v1/replacements`, but limited to trees where at least one predecessor was non-signaling (full-RBF).
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-fullrbf-replacements)*
Endpoint: `GET /api/v1/fullrbf/replacements`
#### Parameters
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`ReplacementNode`](../interfaces/ReplacementNode.md)[]\>
***
### getHashrate()
> **getHashrate**(`options?`): `Promise`\<[`HashrateSummary`](../interfaces/HashrateSummary.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:11535](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11535)
Network hashrate (all time)
Get network hashrate and difficulty data for all time.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-hashrate)*
Endpoint: `GET /api/v1/mining/hashrate`
#### Parameters
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`HashrateSummary`](../interfaces/HashrateSummary.md)\>
***
### getHashrateByPeriod()
> **getHashrateByPeriod**(`time_period`, `options?`): `Promise`\<[`HashrateSummary`](../interfaces/HashrateSummary.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:11553](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11553)
Network hashrate
Get network hashrate and difficulty data for a time period. Valid periods: `24h`, `3d`, `1w`, `1m`, `3m`, `6m`, `1y`, `2y`, `3y`.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-hashrate)*
Endpoint: `GET /api/v1/mining/hashrate/{time_period}`
#### Parameters
##### time\_period
[`TimePeriod`](../type-aliases/TimePeriod.md)
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`HashrateSummary`](../interfaces/HashrateSummary.md)\>
***
### getHealth()
> **getHealth**(`options?`): `Promise`\<[`Health`](../interfaces/Health.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:10544](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L10544)
Health check
Liveness probe. Returns server identity, uptime, and indexed/computed heights from local state only (no bitcoind round-trip). For real chain-tip catch-up, see `/api/server/sync`.
Endpoint: `GET /health`
#### Parameters
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`Health`](../interfaces/Health.md)\>
***
### getHistoricalPrice()
> **getHistoricalPrice**(`timestamp?`, `options?`): `Promise`\<[`HistoricalPrice`](../interfaces/HistoricalPrice.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:10948](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L10948)
Historical price
Get historical BTC/USD price. Optionally specify a UNIX timestamp to get the price at that time.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-historical-price)*
Endpoint: `GET /api/v1/historical-price`
#### Parameters
##### timestamp?
`number`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`HistoricalPrice`](../interfaces/HistoricalPrice.md)\>
***
### getIndexes()
> **getIndexes**(`options?`): `Promise`\<[`IndexInfo`](../interfaces/IndexInfo.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:10628](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L10628)
List available indexes
Returns all available indexes with their accepted query aliases. Use any alias when querying series.
Endpoint: `GET /api/series/indexes`
#### Parameters
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`IndexInfo`](../interfaces/IndexInfo.md)[]\>
***
### getJson()
> **getJson**\<`T`\>(`path`, `options?`): `Promise`\<`T`\>
Defined in: [Developer/brk/modules/brk-client/index.js:1978](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L1978)
Make a GET request expecting a JSON response. Cached and supports `onValue`.
#### Type Parameters
##### T
`T`
#### Parameters
##### path
`string`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`T`\>
#### Inherited from
`BrkClientBase.getJson`
***
### getLivePrice()
> **getLivePrice**(`options?`): `Promise`\<`number`\>
Defined in: [Developer/brk/modules/brk-client/index.js:11863](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11863)
Live BTC/USD price
Returns the current BTC/USD price in dollars, derived from on-chain round-dollar output patterns in the last 12 blocks plus mempool.
Endpoint: `GET /api/mempool/price`
#### Parameters
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`number`\>
***
### getMempool()
> **getMempool**(`options?`): `Promise`\<[`MempoolInfo`](../interfaces/MempoolInfo.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:11741](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11741)
Mempool statistics
Get current mempool statistics including transaction count, total vsize, total fees, and fee histogram.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-mempool)*
Endpoint: `GET /api/mempool`
#### Parameters
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`MempoolInfo`](../interfaces/MempoolInfo.md)\>
***
### getMempoolBlocks()
> **getMempoolBlocks**(`options?`): `Promise`\<[`MempoolBlock`](../interfaces/MempoolBlock.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:11693](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11693)
Projected mempool blocks
Projected blocks for fee estimation. Block 0 reflects Bitcoin Core's actual next-block selection; blocks 1+ are a fee-tier approximation.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-mempool-blocks-fees)*
Endpoint: `GET /api/v1/fees/mempool-blocks`
#### Parameters
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`MempoolBlock`](../interfaces/MempoolBlock.md)[]\>
***
### getMempoolHash()
> **getMempoolHash**(`options?`): `Promise`\<`number`\>
Defined in: [Developer/brk/modules/brk-client/index.js:11755](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11755)
Mempool content hash
Returns an opaque hash that changes whenever the projected next block changes. Same value as the mempool ETag. Useful as a freshness/liveness signal: if it stays constant for tens of seconds on a live network, the mempool sync loop has stalled.
Endpoint: `GET /api/mempool/hash`
#### Parameters
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`number`\>
***
### getMempoolRecent()
> **getMempoolRecent**(`options?`): `Promise`\<[`MempoolRecentTx`](../interfaces/MempoolRecentTx.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:11787](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11787)
Recent mempool transactions
Get the last 10 transactions to enter the mempool.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-mempool-recent)*
Endpoint: `GET /api/mempool/recent`
#### Parameters
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`MempoolRecentTx`](../interfaces/MempoolRecentTx.md)[]\>
***
### getMempoolTxids()
> **getMempoolTxids**(`options?`): `Promise`\<`string`[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:11771](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11771)
Mempool transaction IDs
Get all transaction IDs currently in the mempool.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-mempool-transaction-ids)*
Endpoint: `GET /api/mempool/txids`
#### Parameters
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`string`[]\>
***
### getOpenapi()
> **getOpenapi**(`options?`): `Promise`\<`any`\>
Defined in: [Developer/brk/modules/brk-client/index.js:12113](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L12113)
OpenAPI specification
Full OpenAPI 3.1 specification for this API.
Endpoint: `GET /openapi.json`
#### Parameters
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`any`\>
***
### getPool()
> **getPool**(`slug`, `options?`): `Promise`\<[`PoolDetail`](../interfaces/PoolDetail.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:11430](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11430)
Mining pool details
Get detailed information about a specific mining pool including block counts and shares for different time periods.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-mining-pool)*
Endpoint: `GET /api/v1/mining/pool/{slug}`
#### Parameters
##### slug
[`PoolSlug`](../type-aliases/PoolSlug.md)
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`PoolDetail`](../interfaces/PoolDetail.md)\>
***
### getPoolBlocks()
> **getPoolBlocks**(`slug`, `options?`): `Promise`\<[`BlockInfoV1`](../interfaces/BlockInfoV1.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:11500](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11500)
Mining pool blocks
Get the 10 most recent blocks mined by a specific pool.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-mining-pool-blocks)*
Endpoint: `GET /api/v1/mining/pool/{slug}/blocks`
#### Parameters
##### slug
[`PoolSlug`](../type-aliases/PoolSlug.md)
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`BlockInfoV1`](../interfaces/BlockInfoV1.md)[]\>
***
### getPoolBlocksFrom()
> **getPoolBlocksFrom**(`slug`, `height`, `options?`): `Promise`\<[`BlockInfoV1`](../interfaces/BlockInfoV1.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:11519](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11519)
Mining pool blocks from height
Get 10 blocks mined by a specific pool before (and including) the given height.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-mining-pool-blocks)*
Endpoint: `GET /api/v1/mining/pool/{slug}/blocks/{height}`
#### Parameters
##### slug
[`PoolSlug`](../type-aliases/PoolSlug.md)
##### height
`number`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`BlockInfoV1`](../interfaces/BlockInfoV1.md)[]\>
***
### getPoolHashrate()
> **getPoolHashrate**(`slug`, `options?`): `Promise`\<[`PoolHashrateEntry`](../interfaces/PoolHashrateEntry.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:11482](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11482)
Mining pool hashrate
Get hashrate history for a specific mining pool.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-mining-pool-hashrate)*
Endpoint: `GET /api/v1/mining/pool/{slug}/hashrate`
#### Parameters
##### slug
[`PoolSlug`](../type-aliases/PoolSlug.md)
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`PoolHashrateEntry`](../interfaces/PoolHashrateEntry.md)[]\>
***
### getPools()
> **getPools**(`options?`): `Promise`\<[`PoolInfo`](../interfaces/PoolInfo.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:11394](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11394)
List all mining pools
Get list of all known mining pools with their identifiers.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-mining-pools)*
Endpoint: `GET /api/v1/mining/pools`
#### Parameters
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`PoolInfo`](../interfaces/PoolInfo.md)[]\>
***
### getPoolsHashrate()
> **getPoolsHashrate**(`options?`): `Promise`\<[`PoolHashrateEntry`](../interfaces/PoolHashrateEntry.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:11446](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11446)
All pools hashrate (all time)
Get hashrate data for all mining pools.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-mining-pool-hashrates)*
Endpoint: `GET /api/v1/mining/hashrate/pools`
#### Parameters
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`PoolHashrateEntry`](../interfaces/PoolHashrateEntry.md)[]\>
***
### getPoolsHashrateByPeriod()
> **getPoolsHashrateByPeriod**(`time_period`, `options?`): `Promise`\<[`PoolHashrateEntry`](../interfaces/PoolHashrateEntry.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:11464](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11464)
All pools hashrate
Get hashrate data for all mining pools for a time period. Valid periods: `1m`, `3m`, `6m`, `1y`, `2y`, `3y`.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-mining-pool-hashrates)*
Endpoint: `GET /api/v1/mining/hashrate/pools/{time_period}`
#### Parameters
##### time\_period
[`TimePeriod`](../type-aliases/TimePeriod.md)
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`PoolHashrateEntry`](../interfaces/PoolHashrateEntry.md)[]\>
***
### getPoolStats()
> **getPoolStats**(`time_period`, `options?`): `Promise`\<[`PoolsSummary`](../interfaces/PoolsSummary.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:11412](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11412)
Mining pool statistics
Get mining pool statistics for a time period. Valid periods: `24h`, `3d`, `1w`, `1m`, `3m`, `6m`, `1y`, `2y`, `3y`.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-mining-pools)*
Endpoint: `GET /api/v1/mining/pools/{time_period}`
#### Parameters
##### time\_period
[`TimePeriod`](../type-aliases/TimePeriod.md)
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`PoolsSummary`](../interfaces/PoolsSummary.md)\>
***
### getPreciseFees()
> **getPreciseFees**(`options?`): `Promise`\<[`RecommendedFees`](../interfaces/RecommendedFees.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:11725](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11725)
Precise recommended fees
Recommended fee rates with sub-integer precision.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-recommended-fees-precise)*
Endpoint: `GET /api/v1/fees/precise`
#### Parameters
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`RecommendedFees`](../interfaces/RecommendedFees.md)\>
***
### getPrices()
> **getPrices**(`options?`): `Promise`\<[`Prices`](../interfaces/Prices.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:10930](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L10930)
Current BTC price
Returns bitcoin latest price (on-chain derived, USD only).
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-price)*
Endpoint: `GET /api/v1/prices`
#### Parameters
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`Prices`](../interfaces/Prices.md)\>
***
### getRecommendedFees()
> **getRecommendedFees**(`options?`): `Promise`\<[`RecommendedFees`](../interfaces/RecommendedFees.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:11709](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11709)
Recommended fees
Recommended fee rates by confirmation target.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-recommended-fees)*
Endpoint: `GET /api/v1/fees/recommended`
#### Parameters
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`RecommendedFees`](../interfaces/RecommendedFees.md)\>
***
### getReplacements()
> **getReplacements**(`options?`): `Promise`\<[`ReplacementNode`](../interfaces/ReplacementNode.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:11803](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11803)
Recent RBF replacements
Returns up to 25 most-recent RBF replacement trees across the whole mempool. Each entry has the same shape as `tx_rbf().replacements`.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-replacements)*
Endpoint: `GET /api/v1/replacements`
#### Parameters
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`ReplacementNode`](../interfaces/ReplacementNode.md)[]\>
***
### getRewardStats()
> **getRewardStats**(`block_count`, `options?`): `Promise`\<[`RewardStats`](../interfaces/RewardStats.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:11605](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11605)
Mining reward statistics
Get mining reward statistics for the last N blocks including total rewards, fees, and transaction count.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-reward-stats)*
Endpoint: `GET /api/v1/mining/reward-stats/{block_count}`
#### Parameters
##### block\_count
`number`
Number of recent blocks to include
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`RewardStats`](../interfaces/RewardStats.md)\>
***
### getSeries()
> **getSeries**(`series`, `index`, `start?`, `end?`, `limit?`, `format?`, `options?`): `Promise`\<`string` \| [`AnySeriesData`](../type-aliases/AnySeriesData.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:10707](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L10707)
Get series data
Fetch data for a specific series at the given index. Use query parameters to filter by date range and format (json/csv).
Endpoint: `GET /api/series/{series}/{index}`
#### Parameters
##### series
`string`
Series name
##### index
[`Index`](../type-aliases/Index.md)
Aggregation index
##### start?
`number`
Inclusive start: integer index, date (YYYY-MM-DD), or timestamp (ISO 8601). Negative integers count from end. Aliases: `from`, `f`, `s`
##### end?
`number`
Exclusive end: integer index, date (YYYY-MM-DD), or timestamp (ISO 8601). Negative integers count from end. Aliases: `to`, `t`, `e`
##### limit?
`number`
Maximum number of values to return (ignored if `end` is set). Aliases: `count`, `c`, `l`
##### format?
[`Format`](../type-aliases/Format.md)
Format of the output
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`string` \| [`AnySeriesData`](../type-aliases/AnySeriesData.md)\>
***
### getSeriesBulk()
> **getSeriesBulk**(`series`, `index`, `start?`, `end?`, `limit?`, `format?`, `options?`): `Promise`\<`string` \| [`AnySeriesData`](../type-aliases/AnySeriesData.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:10814](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L10814)
Bulk series data
Fetch multiple series in a single request. Supports filtering by index and date range. Returns an array of SeriesData objects. For a single series, use `get_series` instead.
Endpoint: `GET /api/series/bulk`
#### Parameters
##### series
`string`
Requested series
##### index
[`Index`](../type-aliases/Index.md)
Index to query
##### start?
`number`
Inclusive start: integer index, date (YYYY-MM-DD), or timestamp (ISO 8601). Negative integers count from end. Aliases: `from`, `f`, `s`
##### end?
`number`
Exclusive end: integer index, date (YYYY-MM-DD), or timestamp (ISO 8601). Negative integers count from end. Aliases: `to`, `t`, `e`
##### limit?
`number`
Maximum number of values to return (ignored if `end` is set). Aliases: `count`, `c`, `l`
##### format?
[`Format`](../type-aliases/Format.md)
Format of the output
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`string` \| [`AnySeriesData`](../type-aliases/AnySeriesData.md)[]\>
***
### getSeriesCount()
> **getSeriesCount**(`options?`): `Promise`\<[`SeriesCount`](../interfaces/SeriesCount.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:10614](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L10614)
Series count
Returns the number of series available per index type.
Endpoint: `GET /api/series/count`
#### Parameters
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`SeriesCount`](../interfaces/SeriesCount.md)[]\>
***
### getSeriesData()
> **getSeriesData**(`series`, `index`, `start?`, `end?`, `limit?`, `format?`, `options?`): `Promise`\<`string` \| `boolean`[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:10735](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L10735)
Get raw series data
Returns just the data array without the SeriesData wrapper. Supports the same range and format parameters as the standard endpoint.
Endpoint: `GET /api/series/{series}/{index}/data`
#### Parameters
##### series
`string`
Series name
##### index
[`Index`](../type-aliases/Index.md)
Aggregation index
##### start?
`number`
Inclusive start: integer index, date (YYYY-MM-DD), or timestamp (ISO 8601). Negative integers count from end. Aliases: `from`, `f`, `s`
##### end?
`number`
Exclusive end: integer index, date (YYYY-MM-DD), or timestamp (ISO 8601). Negative integers count from end. Aliases: `to`, `t`, `e`
##### limit?
`number`
Maximum number of values to return (ignored if `end` is set). Aliases: `count`, `c`, `l`
##### format?
[`Format`](../type-aliases/Format.md)
Format of the output
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`string` \| `boolean`[]\>
***
### getSeriesInfo()
> **getSeriesInfo**(`series`, `options?`): `Promise`\<[`SeriesInfo`](../interfaces/SeriesInfo.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:10686](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L10686)
Get series info
Returns the supported indexes and value type for the specified series.
Endpoint: `GET /api/series/{series}`
#### Parameters
##### series
`string`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`SeriesInfo`](../interfaces/SeriesInfo.md)\>
***
### getSeriesLatest()
> **getSeriesLatest**(`series`, `index`, `options?`): `Promise`\<`any`\>
Defined in: [Developer/brk/modules/brk-client/index.js:10759](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L10759)
Get latest series value
Returns the single most recent value for a series, unwrapped (not inside a SeriesData object).
Endpoint: `GET /api/series/{series}/{index}/latest`
#### Parameters
##### series
`string`
Series name
##### index
[`Index`](../type-aliases/Index.md)
Aggregation index
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`any`\>
***
### getSeriesLen()
> **getSeriesLen**(`series`, `index`, `options?`): `Promise`\<`number`\>
Defined in: [Developer/brk/modules/brk-client/index.js:10776](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L10776)
Get series data length
Returns the total number of data points for a series at the given index.
Endpoint: `GET /api/series/{series}/{index}/len`
#### Parameters
##### series
`string`
Series name
##### index
[`Index`](../type-aliases/Index.md)
Aggregation index
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`number`\>
***
### getSeriesTree()
> **getSeriesTree**(`options?`): `Promise`\<[`TreeNode`](../type-aliases/TreeNode.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:10600](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L10600)
Series catalog
Returns the complete hierarchical catalog of available series organized as a tree structure. Series are grouped by categories and subcategories.
Endpoint: `GET /api/series`
#### Parameters
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`TreeNode`](../type-aliases/TreeNode.md)\>
***
### getSeriesVersion()
> **getSeriesVersion**(`series`, `index`, `options?`): `Promise`\<`number`\>
Defined in: [Developer/brk/modules/brk-client/index.js:10793](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L10793)
Get series version
Returns the current version of a series. Changes when the series data is updated.
Endpoint: `GET /api/series/{series}/{index}/version`
#### Parameters
##### series
`string`
Series name
##### index
[`Index`](../type-aliases/Index.md)
Aggregation index
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`number`\>
***
### getSyncStatus()
> **getSyncStatus**(`options?`): `Promise`\<[`SyncStatus`](../interfaces/SyncStatus.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:10572](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L10572)
Sync status
Returns the sync status of the indexer, including indexed height, tip height, blocks behind, and last indexed timestamp.
Endpoint: `GET /api/server/sync`
#### Parameters
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`SyncStatus`](../interfaces/SyncStatus.md)\>
***
### getText()
> **getText**(`path`, `options?`): `Promise`\<`string`\>
Defined in: [Developer/brk/modules/brk-client/index.js:1989](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L1989)
Make a GET request expecting a text response (text/plain, text/csv, ...).
Cached and supports `onValue`, same as `getJson`.
#### Parameters
##### path
`string`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`string`\>
#### Inherited from
`BrkClientBase.getText`
***
### getTransactionTimes()
> **getTransactionTimes**(`txId`, `options?`): `Promise`\<`number`[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:12078](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L12078)
Transaction first-seen times
Returns timestamps when transactions were first seen in the mempool. Returns 0 for mined or unknown transactions.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-transaction-times)*
Endpoint: `GET /api/v1/transaction-times`
#### Parameters
##### txId
`string`[]
Transaction IDs to look up (max 250 per request).
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`number`[]\>
***
### getTx()
> **getTx**(`txid`, `options?`): `Promise`\<[`Transaction`](../interfaces/Transaction.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:11933](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11933)
Transaction information
Retrieve complete transaction data by transaction ID (txid). Returns inputs, outputs, fee, size, and confirmation status.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-transaction)*
Endpoint: `GET /api/tx/{txid}`
#### Parameters
##### txid
`string`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`Transaction`](../interfaces/Transaction.md)\>
***
### getTxByIndex()
> **getTxByIndex**(`index`, `options?`): `Promise`\<`string`\>
Defined in: [Developer/brk/modules/brk-client/index.js:11879](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11879)
Txid by index
Retrieve the transaction ID (txid) at a given global transaction index. Returns the txid as plain text.
Endpoint: `GET /api/tx-index/{index}`
#### Parameters
##### index
`number`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`string`\>
***
### getTxHex()
> **getTxHex**(`txid`, `options?`): `Promise`\<`string`\>
Defined in: [Developer/brk/modules/brk-client/index.js:11951](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11951)
Transaction hex
Retrieve the raw transaction as a hex-encoded string. Returns the serialized transaction in hexadecimal format.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-transaction-hex)*
Endpoint: `GET /api/tx/{txid}/hex`
#### Parameters
##### txid
`string`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`string`\>
***
### getTxMerkleblockProof()
> **getTxMerkleblockProof**(`txid`, `options?`): `Promise`\<`string`\>
Defined in: [Developer/brk/modules/brk-client/index.js:11969](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11969)
Transaction merkleblock proof
Get the merkleblock proof for a transaction (BIP37 format, hex encoded).
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-transaction-merkleblock-proof)*
Endpoint: `GET /api/tx/{txid}/merkleblock-proof`
#### Parameters
##### txid
`string`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`string`\>
***
### getTxMerkleProof()
> **getTxMerkleProof**(`txid`, `options?`): `Promise`\<[`MerkleProof`](../interfaces/MerkleProof.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:11987](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11987)
Transaction merkle proof
Get the merkle inclusion proof for a transaction.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-transaction-merkle-proof)*
Endpoint: `GET /api/tx/{txid}/merkle-proof`
#### Parameters
##### txid
`string`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`MerkleProof`](../interfaces/MerkleProof.md)\>
***
### getTxOutspend()
> **getTxOutspend**(`txid`, `vout`, `options?`): `Promise`\<[`TxOutspend`](../interfaces/TxOutspend.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:12006](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L12006)
Output spend status
Get the spending status of a transaction output. Returns whether the output has been spent and, if so, the spending transaction details.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-transaction-outspend)*
Endpoint: `GET /api/tx/{txid}/outspend/{vout}`
#### Parameters
##### txid
`string`
Transaction ID
##### vout
`number`
Output index
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`TxOutspend`](../interfaces/TxOutspend.md)\>
***
### getTxOutspends()
> **getTxOutspends**(`txid`, `options?`): `Promise`\<[`TxOutspend`](../interfaces/TxOutspend.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:12024](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L12024)
All output spend statuses
Get the spending status of all outputs in a transaction. Returns an array with the spend status for each output.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-transaction-outspends)*
Endpoint: `GET /api/tx/{txid}/outspends`
#### Parameters
##### txid
`string`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`TxOutspend`](../interfaces/TxOutspend.md)[]\>
***
### getTxRaw()
> **getTxRaw**(`txid`, `options?`): `Promise`\<`Uint8Array`\<`ArrayBufferLike`\>\>
Defined in: [Developer/brk/modules/brk-client/index.js:12042](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L12042)
Transaction raw
Returns a transaction as binary data.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-transaction-raw)*
Endpoint: `GET /api/tx/{txid}/raw`
#### Parameters
##### txid
`string`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`Uint8Array`\<`ArrayBufferLike`\>\>
***
### getTxRbf()
> **getTxRbf**(`txid`, `options?`): `Promise`\<[`RbfResponse`](../interfaces/RbfResponse.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:11915](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11915)
RBF replacement history
Returns the RBF replacement tree for a transaction, if any. Both `replacements` and `replaces` are null when the tx has no known RBF history within the mempool monitor's retention window.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-transaction-rbf-history)*
Endpoint: `GET /api/v1/tx/{txid}/rbf`
#### Parameters
##### txid
`string`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`RbfResponse`](../interfaces/RbfResponse.md)\>
***
### getTxStatus()
> **getTxStatus**(`txid`, `options?`): `Promise`\<[`TxStatus`](../interfaces/TxStatus.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:12060](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L12060)
Transaction status
Retrieve the confirmation status of a transaction. Returns whether the transaction is confirmed and, if so, the block height, hash, and timestamp.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-transaction-status)*
Endpoint: `GET /api/tx/{txid}/status`
#### Parameters
##### txid
`string`
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`TxStatus`](../interfaces/TxStatus.md)\>
***
### getUrpd()
> **getUrpd**(`cohort`, `agg?`, `options?`): `Promise`\<[`Urpd`](../interfaces/Urpd.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:10872](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L10872)
Latest URPD
URPD for the most recent available date in the cohort. The response's `date` field echoes which date was served.
See the URPD tag description for the response shape and `agg` options.
Endpoint: `GET /api/urpd/{cohort}`
#### Parameters
##### cohort
[`Cohort`](../type-aliases/Cohort.md)
##### agg?
[`UrpdAggregation`](../type-aliases/UrpdAggregation.md)
Aggregation strategy. Default: raw (no aggregation). Accepts `bucket` as alias.
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`Urpd`](../interfaces/Urpd.md)\>
***
### getUrpdAt()
> **getUrpdAt**(`cohort`, `date`, `agg?`, `options?`): `Promise`\<[`Urpd`](../interfaces/Urpd.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:10895](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L10895)
URPD at date
URPD for a (cohort, date) pair. Returns `{ cohort, date, aggregation, close, total_supply, buckets }` where each bucket is `{ price_floor, supply, realized_cap, unrealized_pnl }`.
See the URPD tag description for unit conventions and `agg` options.
Endpoint: `GET /api/urpd/{cohort}/{date}`
#### Parameters
##### cohort
[`Cohort`](../type-aliases/Cohort.md)
##### date
`string`
##### agg?
[`UrpdAggregation`](../type-aliases/UrpdAggregation.md)
Aggregation strategy. Default: raw (no aggregation). Accepts `bucket` as alias.
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`Urpd`](../interfaces/Urpd.md)\>
***
### getVersion()
> **getVersion**(`options?`): `Promise`\<`string`\>
Defined in: [Developer/brk/modules/brk-client/index.js:10558](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L10558)
API version
Returns the current version of the API server
Endpoint: `GET /version`
#### Parameters
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`string`\>
***
### indexToDate()
> **indexToDate**(`index`, `i`): `Date`
Defined in: [Developer/brk/modules/brk-client/index.js:8725](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L8725)
Convert an index value to a Date for date-based indexes.
#### Parameters
##### index
[`Index`](../type-aliases/Index.md)
The index type
##### i
`number`
The index value
#### Returns
`Date`
***
### listSeries()
> **listSeries**(`page?`, `per_page?`, `options?`): `Promise`\<[`PaginatedSeries`](../interfaces/PaginatedSeries.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:10645](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L10645)
Series list
Paginated flat list of all available series names. Use `page` query param for pagination.
Endpoint: `GET /api/series/list`
#### Parameters
##### page?
`number`
Pagination index
##### per\_page?
`number`
Results per page (default: 1000, max: 1000)
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`PaginatedSeries`](../interfaces/PaginatedSeries.md)\>
***
### listUrpdCohorts()
> **listUrpdCohorts**(`options?`): `Promise`\<[`Cohort`](../type-aliases/Cohort.md)[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:10837](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L10837)
Available URPD cohorts
Cohorts for which URPD data is available. Returns names like `all`, `sth`, `lth`, `utxos_under_1h_old`.
Endpoint: `GET /api/urpd`
#### Parameters
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`Cohort`](../type-aliases/Cohort.md)[]\>
***
### listUrpdDates()
> **listUrpdDates**(`cohort`, `options?`): `Promise`\<`number`[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:10853](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L10853)
Available URPD dates
Dates for which a URPD snapshot is available for the cohort. One entry per UTC day, sorted ascending.
Endpoint: `GET /api/urpd/{cohort}/dates`
#### Parameters
##### cohort
[`Cohort`](../type-aliases/Cohort.md)
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`number`[]\>
***
### post()
> **post**(`path`, `body`, `options?`): `Promise`\<`Response`\>
Defined in: [Developer/brk/modules/brk-client/index.js:2015](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L2015)
Make a POST request with a string body.
POST responses are uncached and never invoke `onValue` — every call hits
the network with the same body and returns the upstream response.
#### Parameters
##### path
`string`
##### body
`string`
##### options?
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`Response`\>
#### Inherited from
`BrkClientBase.post`
***
### postBytes()
> **postBytes**(`path`, `body`, `options?`): `Promise`\<`Uint8Array`\<`ArrayBufferLike`\>\>
Defined in: [Developer/brk/modules/brk-client/index.js:2060](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L2060)
Make a POST request expecting binary data (application/octet-stream).
#### Parameters
##### path
`string`
##### body
`string`
##### options?
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`Uint8Array`\<`ArrayBufferLike`\>\>
#### Inherited from
`BrkClientBase.postBytes`
***
### postJson()
> **postJson**\<`T`\>(`path`, `body`, `options?`): `Promise`\<`T`\>
Defined in: [Developer/brk/modules/brk-client/index.js:2036](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L2036)
Make a POST request expecting a JSON response.
#### Type Parameters
##### T
`T`
#### Parameters
##### path
`string`
##### body
`string`
##### options?
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`T`\>
#### Inherited from
`BrkClientBase.postJson`
***
### postText()
> **postText**(`path`, `body`, `options?`): `Promise`\<`string`\>
Defined in: [Developer/brk/modules/brk-client/index.js:2048](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L2048)
Make a POST request expecting a text response.
#### Parameters
##### path
`string`
##### body
`string`
##### options?
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`string`\>
#### Inherited from
`BrkClientBase.postText`
***
### postTx()
> **postTx**(`body`, `options?`): `Promise`\<`string`\>
Defined in: [Developer/brk/modules/brk-client/index.js:12099](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L12099)
Broadcast transaction
Broadcast a raw transaction to the network. The transaction should be provided as hex in the request body. The txid will be returned on success.
*[Mempool.space docs](https://mempool.space/docs/api/rest#post-transaction)*
Endpoint: `POST /api/tx`
#### Parameters
##### body
`string`
Request body
##### options?
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`string`\>
***
### searchSeries()
> **searchSeries**(`q`, `limit?`, `options?`): `Promise`\<`string`[]\>
Defined in: [Developer/brk/modules/brk-client/index.js:10666](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L10666)
Search series
Fuzzy search for series by name. Supports partial matches and typos.
Endpoint: `GET /api/series/search`
#### Parameters
##### q
`string`
Search query string
##### limit?
`number`
Maximum number of results
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<`string`[]\>
***
### seriesEndpoint()
> **seriesEndpoint**(`series`, `index`): [`SeriesEndpoint`](../interfaces/SeriesEndpoint.md)\<`unknown`\>
Defined in: [Developer/brk/modules/brk-client/index.js:10531](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L10531)
Create a dynamic series endpoint builder for any series/index combination.
Use this for programmatic access when the series name is determined at runtime.
For type-safe access, use the `series` tree instead.
#### Parameters
##### series
`string`
The series name
##### index
[`Index`](../type-aliases/Index.md)
The index name
#### Returns
[`SeriesEndpoint`](../interfaces/SeriesEndpoint.md)\<`unknown`\>
***
### validateAddress()
> **validateAddress**(`address`, `options?`): `Promise`\<[`AddrValidation`](../interfaces/AddrValidation.md)\>
Defined in: [Developer/brk/modules/brk-client/index.js:11078](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L11078)
Validate address
Validate a Bitcoin address and get information about its type and scriptPubKey. Returns `isvalid: false` with an error message for invalid addresses.
*[Mempool.space docs](https://mempool.space/docs/api/rest#get-address-validate)*
Endpoint: `GET /api/v1/validate-address/{address}`
#### Parameters
##### address
`string`
Bitcoin address to validate (can be any string)
##### options?
###### onValue?
(`value`) => `void`
###### signal?
`AbortSignal`
#### Returns
`Promise`\<[`AddrValidation`](../interfaces/AddrValidation.md)\>
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