1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07f90c7dff1e54104b9a5dbc75d0b98c295752654363d64f6f1c29cebcf21e4. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa3e7b3b-bdae-4e37-aeae-52f652aabe88.json and https://artists.proofprofile.net/proofs/artist/fa3e7b3b-bdae-4e37-aeae-52f652aabe88.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Congratulations! (From "Pokémon: Let's Go, Pikachu!" and "Pokémon: Let's Go, Eevee!")
Staff Roll (from "The Legend of Zelda: A Link to the Past")
1 A.M. (From "Animal Crossing: New Leaf")