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 0x6b3cbc080d10371b7b3a655d9df1ff8c0b2db86948fddbef1824e44f8833be10. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/44032b89-96ea-4d93-8a0a-247c7f438ecb.json and https://artists.proofprofile.net/proofs/artist/44032b89-96ea-4d93-8a0a-247c7f438ecb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ein Pony und zwei kleine Wunder (Klara + Krümel 6)
Ein Pony total verhext (Klara + Krümel 3)
Ein Pony außer Rand und Band (Klara + Krümel 5)