[**brk-client**](../README.md) *** [brk-client](../globals.md) / SeriesTree\_Indexes\_Epoch # Interface: SeriesTree\_Indexes\_Epoch Defined in: [Developer/brk/modules/brk-client/index.js:5529](https://github.com/bitcoinresearchkit/brk/blob/75a97b4da99e60fce9ac789d118004f9b3db3ee5/modules/brk-client/index.js#L5529) ## Properties ### firstHeight > **firstHeight**: [`SeriesPattern17`](../type-aliases/SeriesPattern17.md)\<`number`\> Defined in: [Developer/brk/modules/brk-client/index.js:5530](https://github.com/bitcoinresearchkit/brk/blob/75a97b4da99e60fce9ac789d118004f9b3db3ee5/modules/brk-client/index.js#L5530)