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 0x5d240bd50b15d0a12f8683d4dea381d8e0a077690c76fc7f64bdead0bab7f945. Chain 2 (Bitcoin): anchored in block 954062 (2026-06-17T07:39:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/468f45c7-28da-470f-bac4-d1b215154ec6.json and https://artists.proofprofile.net/proofs/artist/468f45c7-28da-470f-bac4-d1b215154ec6.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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Es tanzt ein Bi Ba Butzemann (Kids Party Version)
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Zeigt her eure Füsschen (Kids Party Feet Mix)