Aadmininswiftnodes.hashnode.dev·21h ago · 5 min readOptimism RPC: The Chain That Became a TemplateMost layer-2s are chains. Optimism is a chain and a template. OP Mainnet (chain ID 10, public mainnet since December 2021) is one of the oldest and most battle-tested optimistic rollups — and its code00
Aadmininswiftnodes.hashnode.dev·1d ago · 5 min readtrace_filter and trace_transaction: Reading What Receipts Can't ShowA successful receipt tells you almost nothing about what a transaction actually did. The token moved, but through which contracts? The call succeeded, but which internal transfer carried the value? Lo00
Aadmininswiftnodes.hashnode.dev·2d ago · 5 min readJSON-RPC Error Codes, Decoded: Retry, Fix, or Accept?Every developer building on EVM chains eventually stares at {"code":-32000,"message":"..."} at 2am, unsure whether the problem is their code, the node, or the blockchain itself. That distinction is th00
Aadmininswiftnodes.hashnode.dev·5d ago · 5 min readThe Three Ways a Blockchain Dies: Lessons from Moonbeam's ShutdownOn July 31, 2026, Moonbeam — once one of Polkadot's flagship EVM parachains — officially ceased operations. GLMR migrated 1:1 to an ERC-20 on Base, the team pivoted to a new project, and the chain wou00
Aadmininswiftnodes.hashnode.dev·6d ago · 5 min readEthereum Light Clients: Verified Data Without Running a NodeThis week we established two things: an RPC answer is just something a server told you, and eth_getProof lets you verify a single answer — if you have a block header you trust. That "if" is the last p10
