[**brk-client**](../README.md) *** [brk-client](../globals.md) / SeriesTree\_Indexes\_Halving # Interface: SeriesTree\_Indexes\_Halving Defined in: [Developer/brk/modules/brk-client/index.js:6922](https://github.com/bitcoinresearchkit/brk/blob/cc5b6da341b469859cb457c9c0c93a547eb6ee00/modules/brk-client/index.js#L6922) ## Properties ### firstHeight > **firstHeight**: [`SeriesPattern16`](../type-aliases/SeriesPattern16.md)\<`number`\> Defined in: [Developer/brk/modules/brk-client/index.js:6923](https://github.com/bitcoinresearchkit/brk/blob/cc5b6da341b469859cb457c9c0c93a547eb6ee00/modules/brk-client/index.js#L6923)