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 0xafb3fe12489552905f1e7deb381b012213b56a1d717a54237324f6b1f52eeee2. 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/deaac700-32b0-4ba6-8967-fbe480193b17.json and https://artists.proofprofile.net/proofs/artist/deaac700-32b0-4ba6-8967-fbe480193b17.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 0xd245f82e9fd08023a3c58d262b1374efa0c3b974577503a1ef63ad2cbfbd7b04. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEAF71210750.
Agapi Pou 'Gines Dikopo Maheri (Papercut Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757f07725d6c5efb8c1d248a4f1503e68a6a8cb2cfaee1aea1af975de79c54ef. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GRUM71401670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa74b05248874a026deaf66b62e256748f5a60ff1cfe30f9b961d6ad6b948f72. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEAL30801356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8586ba8e7048cd9f1cdd69777460b5bcc80ba8e06ea05c5baaa1f82d9a34b19f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GRUM71300871.
Future Disco, Vol. 8 - Nighttime Networks
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf1c6697c0ad90baedead5575f2385c8b324f13b18e98203268d2d6f937b3bb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBF2G1100014.
Darkbeat 10th Anniversary Collection (Mixed by Anthony Pappa, Rollin Connection & Phil K)
Crazy (Noze Remix Extended Club Version) [Mixed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba3f20abda732c0ef15b1370a80270105e0321278d81ece5d6f2c06cd91173e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/AUXN22036133.
They Frontin' (feat. Monty Luke) [Mixed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8997a31c8cadf55b638c48a3120eb46372f7bb63a3faadf1babe5834dd101c3f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/AUXN22036142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1147bf8c2b809eba16b87048a6247d31fb6f9c4d5fa018e8f77f826a672255. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AUXN21726886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330a12014a2d30fb53ceb69bedb33748890d196c424783ce8d43c43fc2026a3c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DETO31700477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba63724f7711de4790b101b9232a2498c4a0c53ce2721d8dcde1426171ef4197. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEXN81889249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbfd85f3215e536855c9b6f1e4aa82963d9e6dcbc100073ec84930acb4de2d4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEXN81889250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4edc6c5746dc263ebed9eea989a95822009e39c24ea6f2bb0cff18f3fc1cd0ea. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEXN81889247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4050201f6c851713912ae575998552d29cbc00090aa8ec1235d95cb4c3ef5212. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR01Q0600015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8e94feceffd626b5b3209fe485f3e8a9a907139e440aaa68bb896237c90944. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEN061303029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0411e34c001cad536fcc3bc3325642ce5691349425fc682b907128d413c3ef. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DENC31200506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe289a7fde495590f90cc3b90f90d1ede63410928c063b6e237117c5539303e30. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR00T1700030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac4ac2549f783df5f87fc09a6e0aacb645685c52250eb53f86fece6c99d590c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR2X41565153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1eccc8e4cc7a8f6b28c39e9a8e3ed533f753f0ce2ac20916e2aa743772e602c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEP961300133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee55076d9c294c9324c8d32a031ae1719e50c5f17ea9ef72e86c34eb0ab0123. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEH741313268.