* Preverified headers

* Update skip analysis

Co-authored-by: Alexey Sharp <alexeysharp@Alexeys-iMac.local>

* [header download] Preserve heap invariant in SentRequest function

* Update header_algos.go

In libmdbx >= v0.11.1, the database signature is automatically updated,
which is important to prevent false positive diagnostics of a database
corruption due to the shortcomings of older versions of the library.

Please refer to the ChangeLog for more historical information and actual TODOs.
https://github.com/erthink/libmdbx/blob/master/ChangeLog.md

Release notes: https://github.com/erthink/libmdbx/releases/tag/v0.11.1



Signed-off-by: Leonid Yuriev <leo@yuriev.ru>

The recommended pruning parameter `--prune.r.older=2_000_000` prunes too many blocks to successfully sync an Eth2 client.

At the time of writing, we're at block 13411141. That means with the above prune parameter, recipes of blocks older than 11411141 are pruned. This misses some required blocks, as the deposit contract was deployed at block 11184524 (see option `--contract-deployment-block` from [here](https://docs.prylabs.network/docs/prysm-usage/parameters/))

Instead, use the new `--prune.r.before 11184524` option together with `--prune htc`

* save

* save

PoolV2: Use default crypto context - it's thread-safe - because creation of new one failing in Docker on linux host (#2847)

This reverts commit 7234210f.

Setting a period !=0 allows mining of empty blocks

x

* Update header_algos.go

* Update stage_headers.go

* Update header_algos.go

* Use decompressor

* Use decompressor

* Close compressor

* Upgrade to latest erigon-lib

* Fix compile errors

* Fix lint

* Remove count from files

* Remove count from files

Co-authored-by: Alex Sharp <alexsharp@Alexs-MacBook-Pro.local>
Co-authored-by: Alexey Sharp <alexeysharp@Alexeys-iMac.local>

* updated Fermion extradata + fixed bug with PublicKey

* Update Fermion extradata: fix genesis hash

This reverts commit 7f58290a.