Historical Beacon RNG

[jaybuidl]

Adapted from @kevincharm's RandaoAccessor

Specifications

https://docs.google.com/document/d/1hKlzk51z-ULnfSL4sQ7aCl70IQBxObtr1i8ZfsYl6MY/edit

Usage

1. Court is in Staking phase. The bot calls passPhase(), which makes the RNG emit a Request(_blockNumber) event,
2. Court is now in Generating phase. The bot listens to the Request event and retrieves the requested block number, then retrieves the block header from RPC with the eth_getblockbynumber method, then RLP-encodes the header using getBlockWithRLP(), finally provides the header to the RNG by calling verifyRecent(),
3. The bot calls passPhase(), the Court is now in Drawing phase.

[kevincharm]

Hey! I briefly read through your spec doc. Nowadays it should possible to use IVCs to verify older block hashes (see: https://github.com/arnaucube/hash-chain-sonobe). So you needn't necessarily rely on a third-party. It's still very fiddly, but just wanted to share in case in might be of use :)

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud