[**brk-client**](../README.md) *** [brk-client](../globals.md) / BlockHashStartIndex # Interface: BlockHashStartIndex Defined in: [Developer/brk/modules/brk-client/index.js:177](https://github.com/bitcoinresearchkit/brk/blob/cc5b6da341b469859cb457c9c0c93a547eb6ee00/modules/brk-client/index.js#L177) ## Properties ### hash > **hash**: `string` Defined in: [Developer/brk/modules/brk-client/index.js:178](https://github.com/bitcoinresearchkit/brk/blob/cc5b6da341b469859cb457c9c0c93a547eb6ee00/modules/brk-client/index.js#L178) Bitcoin block hash *** ### startIndex > **startIndex**: `number` Defined in: [Developer/brk/modules/brk-client/index.js:179](https://github.com/bitcoinresearchkit/brk/blob/cc5b6da341b469859cb457c9c0c93a547eb6ee00/modules/brk-client/index.js#L179) Starting transaction index within the block (0-based)