September 26, 2026 · 6 min read
Kusama RPC: A Developer's Guide After the Asset Hub Move
Since October 2025, Kusama balances live on Asset Hub, not the relay chain. What the relay RPC still serves, finality, runtime upgrades and code.
Read →Posts tagged #polkadot
3 posts.
August 4, 2026 · 5 min read
Polkadot RPC: JSON-RPC Over a Different Namespace
Polkadot's RPC is JSON-RPC over HTTP — but it's the Substrate namespace (system_*, chain_*, state_*), not eth_*, so viem/ethers don't connect. The relay chain runs no smart contracts, DOT has 10 decimals (not 18), and storage is SCALE-encoded, not ABI. Here's the developer map for querying Polkadot (and Kusama / Asset Hub) over Substrate RPC.
Read →July 25, 2026 · 4 min read
Astar RPC: One Chain, Two VMs, Polkadot Security
Astar is a Polkadot parachain that runs both EVM and WebAssembly contracts. Chain ID 592 is its EVM endpoint — standard eth_*, so viem/ethers/foundry just work — but underneath it's Substrate with Polkadot's deterministic GRANDPA finality. Here's the developer map: what the EVM RPC gives you, and what the parachain model changes.
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