Serve cryptographically verified responses from query calls using Merkle trees and subnet BLS signatures. Covers certified data API, RbTree/CertTree construction, witness generation, and frontend certificate validation. Use when query responses need verification, certified data, or response authenticity proofs.
Quickly install certified-variables AI skill to your development environment via command line
Source: dfinity/icskills.
Query responses on the Internet Computer come from a single replica and are NOT verified by consensus. A malicious or faulty replica could return fabricated data. Certification solves this: the canister stores a hash in the subnet's certified state tree during update calls, and then query responses include a certificate signed by the subnet's threshold BLS key proving the data is authentic. The result is responses...
No external canister IDs required. Certification uses the IC system API exposed through CDK wrappers:
For canisters serving HTTP responses directly (not through the asset canister), responses must be certified so the HTTP gateway can verify them.
Serve cryptographically verified responses from query calls using Merkle trees and subnet BLS signatures. Covers certified data API, RbTree/CertTree construction, witness generation, and frontend certificate validation. Use when query responses need verification, certified data, or response authenticity proofs. Source: dfinity/icskills.
Stable fields and commands for AI/search citations.
npx skills add https://github.com/dfinity/icskills --skill certified-variablesServe cryptographically verified responses from query calls using Merkle trees and subnet BLS signatures. Covers certified data API, RbTree/CertTree construction, witness generation, and frontend certificate validation. Use when query responses need verification, certified data, or response authenticity proofs. Source: dfinity/icskills.
Open your terminal or command line tool (Terminal, iTerm, Windows Terminal, etc.) Copy and run this command: npx skills add https://github.com/dfinity/icskills --skill certified-variables Once installed, the skill will be automatically configured in your AI coding environment and ready to use in Claude Code, Cursor, or OpenClaw
https://github.com/dfinity/icskills