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 0xc85ab5cf9b5c434539270485f719b8c027573fa6180a853b91fa223e0e2157ce. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3070c2ea-592f-49bf-9c6f-82d438809589.json and https://artists.proofprofile.net/proofs/artist/3070c2ea-592f-49bf-9c6f-82d438809589.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
If You're Happy And You Know It Clap Your Hands
Christmas Lullabies for Solo Piano Vol.1
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0xb196fd51861c8cf3e056946576a29a313340b933676a0a15aebcb735c8d0db31. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUMEV2426042.
It's A Small World (From 'Walt Disney Resort and Magic Kingdom Park')
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6442958b0d6ae8998ead0ba152984e0201b0548d58e49b06f1cc1b7cc59efab. Chain 2 (Bitcoin): anchored in block 957554 (2026-07-11T10:39:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUMEV2436502.
The Rainbow Connection (From The Muppet Movie)
Pop, Musical Theatre & Film Scores For Children Vol. 1
Un Poco Loco (From 'Walt Disney's Coco')
Hot Dog (From 'Walt Disney's Mickey Mouse Club')
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530a5d8663a9d768b5eafe8ea9943d826a38ae214501bcd6159fc271fc14d193. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2439418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa69732a8607c8fa726a5f3d8b5620dc8210e63d20374625b2a5bb6e12ad6f7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2439419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7a2012cedd77d75acec49fc9cf36a031f62dbaf5f14289267c5725b4f1b9db. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2435794.