[**brk-client**](../README.md) *** [brk-client](../globals.md) / BlockHashStartIndex # Interface: BlockHashStartIndex Defined in: [Developer/brk/modules/brk-client/index.js:163](https://github.com/bitcoinresearchkit/brk/blob/883b38c77cb9f979692884fd56d9966e0f8ea76b/modules/brk-client/index.js#L163) ## Properties ### hash > **hash**: `string` Defined in: [Developer/brk/modules/brk-client/index.js:164](https://github.com/bitcoinresearchkit/brk/blob/883b38c77cb9f979692884fd56d9966e0f8ea76b/modules/brk-client/index.js#L164) Bitcoin block hash *** ### startIndex > **startIndex**: `number` Defined in: [Developer/brk/modules/brk-client/index.js:165](https://github.com/bitcoinresearchkit/brk/blob/883b38c77cb9f979692884fd56d9966e0f8ea76b/modules/brk-client/index.js#L165) Starting transaction index within the block (0-based)