Internet Computer Now Speaks Solana
Synopsis
ICP canisters can now sign and send Solana transactions natively, completing the network’s Helium milestone.
Internet Computer (ICP) has bragged for years that its smart contracts can call the outside world. Now it finally has a trophy: native, decentralized access to Solana (SOL).
A single ICP canister can ping Solana’s JSON-RPC, sign Ed25519 transactions on its own, and fire SOL across chains without asking a centralized server for permission. Multichain dapps can swap SOL for BTC, juggle NFTs, or read Solana account state, all from a canister that bills in cycles and never leaves the network’s perimeter.
The upgrade landed in two chunks.
Threshold EdDSA lets ICP nodes collectively produce Solana-valid signatures so the chain will accept their transactions. The SOL RPC canister acts like an on-chain load-balanced RPC node. It blasts queries to three Solana providers at once, compares answers, and rejects anything odd.
No API keys, no credit cards. Developers just attach cycles and call. A jsonRequest hook covers exotic endpoints while keeping quorum logic intact.
Governance stays pure. The Network Nervous System DAO owns the SOL RPC canister, so any code tweak or provider swap needs a community vote. Slot rounding smooths Solana’s 400 ms block churn so ICP nodes reach consensus without timing out.
Security stays tight because signatures require collaboration across nodes—nobody can run away with keys.
What does that unlock? Imagine a wallet where users trade SOL for BTC in one click and never notice ICP humming in the background. A GameFi studio could mint an NFT on Solana, then settle royalties on Bitcoin, all from a single ICP backend that never touches servers.
Developers can chain-call: read a Solana program, feed the result into an Ethereum contract, hedge the outcome, and store analytics on ICP in one round trip. Builders skip node maintenance and rate-limit headaches, users skip fragile bridges, and auditors get a public record of every call.
ICP now speaks Bitcoin, Ethereum, and Solana with the same codebase. That checks off the Helium roadmap milestone and tees up the next phase: stitching chains together so smoothly that liquidity forgets which rails it rides. Profit comes later… maybe.
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