Verbeth: Secure Messaging over the Blockchain Event Logs

This work explores whether the public log layer of an EVM compatible ledger can act as a minimal and globally reachable transport for encrypted communication. We present Verbeth, a proof of concept protocol that uses ordinary wallet keys and per message forward secrecy to send ciphertext directly through transaction logs. The design requires no auxiliary servers and offers strong censorship resistance and guaranteed final delivery, while revealing the economic and cryptographic limits of on chain messaging. We also compare it with established messaging protocols to clarify where its guarantees align and where they diverge. Looking ahead, the protocol can absorb hybrid or post quantum designs that remove harvest now decrypt later concerns and place its security profile on par with other messengers.