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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2955667e92a3a9f36b1f8b93d1671f4c349b25e025b9df470ee1f2073a6a5fae. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f072407-ce40-4dad-8ee1-b873911194fa.json and https://artists.proofprofile.net/proofs/artist/1f072407-ce40-4dad-8ee1-b873911194fa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Can Sing: Tribute to Lucio Dalla (Cover Version & Instrumental Version for Karaoke)
Best International Songs : High School Musical, Vol. 2
Basi audio Karaoke of High School Musical, Vol. 2
Best International Songs: High School Musical, Vol. 1
Tribute to Lucio Battisti Dance Remix, Vol. 1
Tribute to Rino Gaetano (Including Karaoke Version)