https://polkadot.subsquare.io/referenda/1301

• Project: Subcoin, a Rust Bitcoin Full Node implementation.
• Grant: Received from Web3 Foundation to showcase polkadot-sdk.
• Objective: Implement decentralized Bitcoin fast sync.
• Challenges: Substrate's limitations caused Out-of-Memory (OOM) errors during state sync.
• Progress: Identified root cause and developed a plan with polkadot-sdk maintainers.
• Proposal: Submitted a follow-up grant, recommended for treasury funding.
• Issues: OOM on large state import and lack of persistent state sync.
• Goal: Resolve OOM issue and implement persistent state sync for Substrate.