[**brk-client**](../README.md) *** [brk-client](../globals.md) / MempoolBlock # Interface: MempoolBlock Defined in: [Developer/brk/modules/brk-client/index.js:731](https://github.com/bitcoinresearchkit/brk/blob/d161462137a58a76f972f5e15b0029af02a165ca/modules/brk-client/index.js#L731) ## Properties ### blockSize > **blockSize**: `number` Defined in: [Developer/brk/modules/brk-client/index.js:732](https://github.com/bitcoinresearchkit/brk/blob/d161462137a58a76f972f5e15b0029af02a165ca/modules/brk-client/index.js#L732) Total serialized block size in bytes (witness + non-witness). *** ### blockVSize > **blockVSize**: `number` Defined in: [Developer/brk/modules/brk-client/index.js:733](https://github.com/bitcoinresearchkit/brk/blob/d161462137a58a76f972f5e15b0029af02a165ca/modules/brk-client/index.js#L733) Total block virtual size in vbytes *** ### feeRange > **feeRange**: `number`[] Defined in: [Developer/brk/modules/brk-client/index.js:737](https://github.com/bitcoinresearchkit/brk/blob/d161462137a58a76f972f5e15b0029af02a165ca/modules/brk-client/index.js#L737) Fee rate range: [min, 10%, 25%, 50%, 75%, 90%, max] *** ### medianFee > **medianFee**: `number` Defined in: [Developer/brk/modules/brk-client/index.js:736](https://github.com/bitcoinresearchkit/brk/blob/d161462137a58a76f972f5e15b0029af02a165ca/modules/brk-client/index.js#L736) Median fee rate in sat/vB *** ### nTx > **nTx**: `number` Defined in: [Developer/brk/modules/brk-client/index.js:734](https://github.com/bitcoinresearchkit/brk/blob/d161462137a58a76f972f5e15b0029af02a165ca/modules/brk-client/index.js#L734) Number of transactions in the projected block *** ### totalFees > **totalFees**: `number` Defined in: [Developer/brk/modules/brk-client/index.js:735](https://github.com/bitcoinresearchkit/brk/blob/d161462137a58a76f972f5e15b0029af02a165ca/modules/brk-client/index.js#L735) Total fees in satoshis