[**brk-client**](../README.md) *** [brk-client](../globals.md) / BlockHashStartIndex # Interface: BlockHashStartIndex Defined in: [Developer/brk/modules/brk-client/index.js:165](https://github.com/bitcoinresearchkit/brk/blob/41ec24c81e5075cce1fd92557af02306ad5e61c7/modules/brk-client/index.js#L165) ## Properties ### hash > **hash**: `string` Defined in: [Developer/brk/modules/brk-client/index.js:166](https://github.com/bitcoinresearchkit/brk/blob/41ec24c81e5075cce1fd92557af02306ad5e61c7/modules/brk-client/index.js#L166) Bitcoin block hash *** ### startIndex > **startIndex**: `number` Defined in: [Developer/brk/modules/brk-client/index.js:167](https://github.com/bitcoinresearchkit/brk/blob/41ec24c81e5075cce1fd92557af02306ad5e61c7/modules/brk-client/index.js#L167) Starting transaction index within the block (0-based)