[**brk-client**](../README.md) *** [brk-client](../globals.md) / BlockHashStartIndex # Interface: BlockHashStartIndex Defined in: [Developer/brk/modules/brk-client/index.js:102](https://github.com/bitcoinresearchkit/brk/blob/8a938c00f6edf1f447532c02f94f3a13fd7da30e/modules/brk-client/index.js#L102) ## Properties ### hash > **hash**: `string` Defined in: [Developer/brk/modules/brk-client/index.js:103](https://github.com/bitcoinresearchkit/brk/blob/8a938c00f6edf1f447532c02f94f3a13fd7da30e/modules/brk-client/index.js#L103) Bitcoin block hash *** ### startIndex > **startIndex**: `number` Defined in: [Developer/brk/modules/brk-client/index.js:104](https://github.com/bitcoinresearchkit/brk/blob/8a938c00f6edf1f447532c02f94f3a13fd7da30e/modules/brk-client/index.js#L104) Starting transaction index within the block (0-based)