[**brk-client**](../README.md) *** [brk-client](../globals.md) / BlockHashStartIndex # Interface: BlockHashStartIndex Defined in: [Developer/brk/modules/brk-client/index.js:191](https://github.com/bitcoinresearchkit/brk/blob/3faa989691a1f662d8f7f98dbce612dc66a737c7/modules/brk-client/index.js#L191) ## Properties ### hash > **hash**: `string` Defined in: [Developer/brk/modules/brk-client/index.js:192](https://github.com/bitcoinresearchkit/brk/blob/3faa989691a1f662d8f7f98dbce612dc66a737c7/modules/brk-client/index.js#L192) Bitcoin block hash *** ### startIndex > **startIndex**: `number` Defined in: [Developer/brk/modules/brk-client/index.js:193](https://github.com/bitcoinresearchkit/brk/blob/3faa989691a1f662d8f7f98dbce612dc66a737c7/modules/brk-client/index.js#L193) Starting transaction index within the block (0-based)