[**brk-client**](../README.md) *** [brk-client](../globals.md) / BlockHashStartIndex # Interface: BlockHashStartIndex Defined in: [Developer/brk/modules/brk-client/index.js:162](https://github.com/bitcoinresearchkit/brk/blob/5bf06530ce84cd1829c2f934e5baded9c9125d45/modules/brk-client/index.js#L162) ## Properties ### hash > **hash**: `string` Defined in: [Developer/brk/modules/brk-client/index.js:163](https://github.com/bitcoinresearchkit/brk/blob/5bf06530ce84cd1829c2f934e5baded9c9125d45/modules/brk-client/index.js#L163) Bitcoin block hash *** ### startIndex > **startIndex**: `number` Defined in: [Developer/brk/modules/brk-client/index.js:164](https://github.com/bitcoinresearchkit/brk/blob/5bf06530ce84cd1829c2f934e5baded9c9125d45/modules/brk-client/index.js#L164) Starting transaction index within the block (0-based)