nakamoto can not estimate fee after restarts

[vincenzopalazzo]

Nakamoto has an ongoing PR cloudhead/nakamoto#139 that is not able to keep persistent the fee estimated, maybe because I missed something in the nakamoto architecture

But, at the end of the day after the restart for now nakamoto needs to run a little bit to be able to estimate all the fee that core lightning need (up to 100 blocks), but I think the solution is that nakamoto need to be able to store the fee in some cache with the block information.

[vincenzopalazzo]

Tracking issue cloudhead/nakamoto#141

[vincenzopalazzo]

Currently, we are using esplora, but we can use also the neutrino API, but for now, esplora works nicely because we have to fetch also the information about the utxo (but nakamoto can do it too we need just to support it)

The API are there https://nodes.lightning.computer/fees/v1/btc-fee-estimates.json