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 0xebbdd4ff620cd196cb6c2ad0da6f46d1ef3544078d7a01e6f57eca5155b7b66e. 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/5fcf25f8-6835-4507-8f39-55048671961b.json and https://artists.proofprofile.net/proofs/artist/5fcf25f8-6835-4507-8f39-55048671961b.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba826ab3b86e0d28825ba3aa70858217501db75b8b4a6e1034f3f5f302a54caa. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ROGRA2300202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad570c274860f41893ea1376dc0d5c0109f9874cac3abd131929de8e415b612. 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/ROGRA2300122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836b24d07aaa9006d8858a8b8603e457a3def11f80213c7bcb5cd090d849ac71. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ROGRA2300121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b71c55dbb3694f150527a38e7487f20a8af79e843a4af478a42156d6c8f85a9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ROGRA2300702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85cac18e8ae41035038879a998428fbe61cb9bc16436b87fb19cc3cb8ed5df50. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/RO2DY2200278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe905df6de7677bd76fc082e758d21b4124fed68c17cde48820eaf9f10ec5dea7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNWZ2112610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32724a2a78e1bbeef0f21c499288231ebc26ac47ae2eee10faf8e393c1f5112c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ROGRS2400308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f977d9e8926b6c9a33816e963173b4ac745b1a7534bcc2e39015eb1f35930bc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ROGRS2300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2badf67252523fa069dcb8c3e44fa7dc686c4682a0d8514369f6c9114d4c5d. 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/ROGRS2400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828077e01e78265a1af3c1b0712f3668ad80703aec517194f0d17b8bf39792c8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZES62242986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd87475fd36e2d507240dbd905f2b545143e4107bf8cc1cb5c1688537ebdd31. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ROUM72400162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56350274d7ff5b5779dd87bac16cb45c905d5b82877224ed40d52033b713221. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USHM92201796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c66f8901ff8da0f908d9ec8dba69588c64d5cf173d94b88dc94791688edb6e. 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/RO2DY2200376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2badf67252523fa069dcb8c3e44fa7dc686c4682a0d8514369f6c9114d4c5d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ROGRS2400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbeb64d0f6b9ea3c20ed78d7294ab76b041efdddafbf25a9ced54ff2cdb0f595. 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/ROGRS2300089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca9d5f5ec6049da03d182e430e78ca16d2960c964fbc4a239f5c5f092c81007. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA0Q2425481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c5f89353a844656b1e29a4463d4089ede90520a267824779682aa247ce2030. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAFU2184122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0081f95f4f5912fe133d2dfa51882c87774fa659e8d9872ea4088db1e7faf7c6. 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/ROUM72500007.