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 0x75fa6d8dfa5b1ae01cf78b9558dee7f6d6696dbc7199f194508ade858deb32e1. 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/9db0ec0e-82cb-4e20-bacb-5074229282e9.json and https://artists.proofprofile.net/proofs/artist/9db0ec0e-82cb-4e20-bacb-5074229282e9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xd65d95a40134550dec502456c69e526c5cb92db62c088bd2cc53af62850a1e98. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/FRY510881808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00d5f1b75cd393f77c4a0114e25ae81214cf7bff7dda3bf90e6e0fd5e4fdc37. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/FRY510881842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a8c150b6e40580ce44baa8fb38d8a08e3b49d613f3d4cc4883e2545361e253. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/FRY510881943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0aca9b3f4da328f96087cb25b9b5e1cd130a395c5a101797187cc8615a6198. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRY510881917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca8679893cf864772335a707dc908dfa5cdc5bebc3ab3c230ff7ee096ffa27b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRY510881920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaebc2b04c67e6981b701a3cfb99830dfcbc0ff23c6fffa9e004dec780e15c28. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRY510881921.
The Very Best of House and Dance Music History
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10a357731a7ee0ea7f8ff957b8a417384dbe53680c632a02ec5743180208097. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FRY510988817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578d18b8d17eb9f880480f60c6f31453f668b5d9c7d20a68649c4b72c7833087. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRY510988818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2ffa6c9550d8ba279b554704dd1acbbf7f4e4dc79d04f2220b480a7bccedf6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FRY510988820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861e448fd603be5da7e3cabb427a75c5c27944a277cfa398163fa78fe18082ff. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FRY510988825.
90's Dance Party, Vol. 1 (The Best 90's Mix of Dance and Eurodance Pop Hits)
90's Songs of Love (Special Valentine's Day)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c0ced179e6de20a06400acada0b502b1582a889ebcd2afd9b183d215743ee3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRY510881915.
Born in the Nineties (Non Stop 90's Hits)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676069f23740214cc30527d851748e15aa6cfc941d332aa2763c2b93e98e46d6. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/FR0W61785822.
Les Plus Gros Tubes Des Années 90 En Anglais
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6b2498026e2c03e8d9587be304f4433a17a9e8fe861da0fc1214036b82b001. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/CAM460406776.