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Chain Fusion

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Explain the Chain Fusion vision and architecture. Cover how chain-key signatures enable canisters to sign transactions for other chains, the three integration patterns (direct signing, RPC canister, HTTPS outcalls), supported chains (Bitcoin, Ethereum, Solana, Dogecoin), chain-key tokens (ckBTC, ckETH) as the tokenized bridge alternative, and the EVM RPC canister architecture. Emphasize: no bridges, no oracles, no external dependencies.

  • Portal: building-apps/chain-fusion/overview.mdx, supported-chains.mdx, evm-rpc/how-it-works.mdx
  • Learn Hub: Chain Fusion
  • guides/chain-fusion/bitcoin — BTC integration guide
  • guides/chain-fusion/ethereum — ETH integration guide
  • concepts/chain-key-cryptography — underlying crypto
  • guides/defi/chain-key-tokens — ckBTC, ckETH