Solving State Bloat with State Archival: Risks and Mitigations | Garand Tyson (Stellar)

Garand Tyson presents a solution for state bloat on the Stellar Network using state archival. In this approach, each piece of ledger state is assigned a TTL (time-to-live), which can be extended through rent payments that recapture storage costs. Upon TTL expiration, data is archived and can be deleted from active databases, reducing redundant storage needs. Archived states can be recovered using off-chain Merkle proofs. Tyson details strategies to defend against potential attacks on this mechanism, including double restore and malicious archival, by requiring advanced proof systems to ensure integrity. The double nonce attack is mitigated using binary fuse filters, optimizing storage efficiency. This protocol is set to debut on Stellar mainnet in 2025.