[**brk-client**](../README.md) *** [brk-client](../globals.md) / BlockHashStartIndex # Interface: BlockHashStartIndex Defined in: [Developer/brk/modules/brk-client/index.js:128](https://github.com/bitcoinresearchkit/brk/blob/041652d85d1f6ed0371402865bf343ad227ee250/modules/brk-client/index.js#L128) ## Properties ### hash > **hash**: `string` Defined in: [Developer/brk/modules/brk-client/index.js:129](https://github.com/bitcoinresearchkit/brk/blob/041652d85d1f6ed0371402865bf343ad227ee250/modules/brk-client/index.js#L129) Bitcoin block hash *** ### startIndex > **startIndex**: `number` Defined in: [Developer/brk/modules/brk-client/index.js:130](https://github.com/bitcoinresearchkit/brk/blob/041652d85d1f6ed0371402865bf343ad227ee250/modules/brk-client/index.js#L130) Starting transaction index within the block (0-based)