Robin most commonly refers to several species of passerine birds. Robin may also refer to: Animals Australasian robins, red-breasted songbirds of the family Petroicidae Many members of the subfa
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 0x6ab1740361221763434536763714d2f540786ff4bbdf3938a33404d63d802b34. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/26ab9c90-c7ec-4889-bac1-9de8f81cbac7.json and https://artists.proofprofile.net/proofs/artist/26ab9c90-c7ec-4889-bac1-9de8f81cbac7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).