[**brk-client**](../README.md) *** [brk-client](../globals.md) / BlockHashStartIndex # Interface: BlockHashStartIndex Defined in: [Developer/brk/modules/brk-client/index.js:159](https://github.com/bitcoinresearchkit/brk/blob/83edef4806773ef7225b7c0de863c44bd953169d/modules/brk-client/index.js#L159) ## Properties ### hash > **hash**: `string` Defined in: [Developer/brk/modules/brk-client/index.js:160](https://github.com/bitcoinresearchkit/brk/blob/83edef4806773ef7225b7c0de863c44bd953169d/modules/brk-client/index.js#L160) Bitcoin block hash *** ### startIndex > **startIndex**: `number` Defined in: [Developer/brk/modules/brk-client/index.js:161](https://github.com/bitcoinresearchkit/brk/blob/83edef4806773ef7225b7c0de863c44bd953169d/modules/brk-client/index.js#L161) Starting transaction index within the block (0-based)