[**brk-client**](../README.md) *** [brk-client](../globals.md) / BlockHashStartIndex # Interface: BlockHashStartIndex Defined in: [Developer/brk/modules/brk-client/index.js:194](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L194) ## Properties ### hash > **hash**: `string` Defined in: [Developer/brk/modules/brk-client/index.js:195](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L195) Bitcoin block hash *** ### startIndex > **startIndex**: `number` Defined in: [Developer/brk/modules/brk-client/index.js:196](https://github.com/bitcoinresearchkit/brk/blob/6ff43c0f74cf0925ed63288a681f08b5cb45400b/modules/brk-client/index.js#L196) Starting transaction index within the block (0-based)