1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x275d946ed27309a3b0810a381ae9f3f0df2366e071a75fdd69d96809a096b9f5. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa029b2b-dff8-41e7-8f0f-f946a3ee2075.json and https://artists.proofprofile.net/proofs/artist/fa029b2b-dff8-41e7-8f0f-f946a3ee2075.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Twinkle Twinkle Little Star (Soft Version)
Believe Me If All Those Endearing Young Charms
Onward Christian Soldiers (Reflective Version)
Atmospheric Anthems: Solo Piano National Anthems
Das Deutschlandlied (National Anthem of Germany)
Das Deutschlandlied (National Anthem of Germany) [Soft Version]
God Save the Queen (National Anthem of England)
God Save the Queen (National Anthem of England) [Funereal Version]
Hen Wlad Fy Nhadau (National Anthem of Wales)
Hen Wlad Fy Nhadau (National Anthem of Wales) [Soft Version]
La Marseillaise (National Anthem of France)
La Marseillaise (National Anthem of France) [Funereal Version]
La Marseillaise (National Anthem of France) [Reflective Version]
Ode to Joy (National Anthem of the European Union)
Ode to Joy (National Anthem of the European Union) [Reflective Version]
Star Spangled Banner (National Anthem of the USA)