[**brk-client**](../README.md) *** [brk-client](../globals.md) / SeriesTree\_Indexes\_Epoch # Interface: SeriesTree\_Indexes\_Epoch Defined in: [Developer/brk/modules/brk-client/index.js:5636](https://github.com/bitcoinresearchkit/brk/blob/3faa989691a1f662d8f7f98dbce612dc66a737c7/modules/brk-client/index.js#L5636) ## Properties ### firstHeight > **firstHeight**: [`SeriesPattern17`](../type-aliases/SeriesPattern17.md)\<`number`\> Defined in: [Developer/brk/modules/brk-client/index.js:5637](https://github.com/bitcoinresearchkit/brk/blob/3faa989691a1f662d8f7f98dbce612dc66a737c7/modules/brk-client/index.js#L5637)