Proof-of-Personhood

[ineiti]

Proof-of-Personhood is a means to prevent sybil attacks on an unpermissioned blockchain. Instead of CPU power or richness, Proof-of-Personhood relies on physical attendance to meetings where each participant can provide a cryptographic token. These tokens can be 'staked' towards nodes, in order to enable new nodes.

Depends on #2188 and #2187

Once BEVM and ByzCoin are better linked (#2187) and there is a reward system (#2188), the following contracts can be implemented:

• group definition contract (based on the project from Bastian Nanchen)
• personhood gathering contract (replacing the ByzCoin personhood contract)
• byzcoin management contract (will update byzcoin-config)
• node service offer

All of these contracts should be written using Stainless.