[**brk-client**](../README.md) *** [brk-client](../globals.md) / SeriesTree\_Indexes\_Halving # Interface: SeriesTree\_Indexes\_Halving Defined in: [Developer/brk/modules/brk-client/index.js:6159](https://github.com/bitcoinresearchkit/brk/blob/c85da92cbcb3b8645b12f2986df719688adb8dff/modules/brk-client/index.js#L6159) ## Properties ### firstHeight > **firstHeight**: [`SeriesPattern16`](../type-aliases/SeriesPattern16.md)\<`number`\> Defined in: [Developer/brk/modules/brk-client/index.js:6160](https://github.com/bitcoinresearchkit/brk/blob/c85da92cbcb3b8645b12f2986df719688adb8dff/modules/brk-client/index.js#L6160)