[**brk-client**](../README.md) *** [brk-client](../globals.md) / BlockHashStartIndex # Interface: BlockHashStartIndex Defined in: [Developer/brk/modules/brk-client/index.js:181](https://github.com/bitcoinresearchkit/brk/blob/acd3d6f42524ece8c85e7b09cc9fdb13b5687b9f/modules/brk-client/index.js#L181) ## Properties ### hash > **hash**: `string` Defined in: [Developer/brk/modules/brk-client/index.js:182](https://github.com/bitcoinresearchkit/brk/blob/acd3d6f42524ece8c85e7b09cc9fdb13b5687b9f/modules/brk-client/index.js#L182) Bitcoin block hash *** ### startIndex > **startIndex**: `number` Defined in: [Developer/brk/modules/brk-client/index.js:183](https://github.com/bitcoinresearchkit/brk/blob/acd3d6f42524ece8c85e7b09cc9fdb13b5687b9f/modules/brk-client/index.js#L183) Starting transaction index within the block (0-based)