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 0xb6dc1a06de6192b2adc6737cf58babefcb184775e6050225a6416e76b194b777. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d53dadca-3181-4a39-a973-d0d04562a084.json and https://artists.proofprofile.net/proofs/artist/d53dadca-3181-4a39-a973-d0d04562a084.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 0x561ff3beb802d6ccd00d5271fbd1a742dd8ff8ac2949279ce05a3726c87a72be. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCAIB2497371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44e54e51ee6b7f74c5b8a9e8bc1238b74c49515168779b265c8e302bf6bc8c8. Chain 2 (Bitcoin): anchored in block 957535 (2026-07-11T07:11:01Z), 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/TCAIB2497385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af556b1cdef061e2156aa7cb40f4583f992fd2e7a6bb537e5c32ff8d4fd91f4. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/TCAIB2497423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29e12ff7d8176ac4a9c401b106eaa7150242680dd2b517e0b03c261c83ed091. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAIB2497482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d0dfcdcc062fe36a30c7c391842a5ea5c7e59cae099c1f3db3d8ac9cc33fe2. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/TCAIB2497919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b91a25e0b87d6dbc86287c65fc4e2fca30a5208b853a59d7a0f5a48e47d67ae. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAIB2497927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278d12786a8b3404191558f40dec14ece8e0b13c33f544bd8b255790fc770de9. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SEYOK1015509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10b15f9500bb8b0a6665690aa1e7059b464efdd86e0e11086192d8bb2549968. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SEYOK1015518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239f422e884b6fe56c8f6d00e484e9a875c989f20fa6c225971c300565b5d223. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SEYOK1015495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229f92682b2438dde831955ad45c7df50f27258a0c315a956c09f6b5e8107493. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SEYOK1015498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348a7c208af8582c3b1341e19e5a01a42e5e5285dda6eb73bd5759e0b90116bb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SEYOK1015499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9db88938717421733ea8aa26b7d638e8885caa5371d5886c3fdbe0303f63b6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SEYOK1015504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda76cc7133bbfb940dc457c8d32782f6a38cb6ba5fb2b685691890c5dd734dfd. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:38:34Z), 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/SEYOK1015507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3445176976ffecd335af253ae8d14187eafda04eac9969e167040caaa7202b. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/SEYOK1016733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425b14bbb3e12dd053ec83daf5b471a809fa683b5b6cfcce450c63645fa4ee6b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SEYOK1016734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b80928803032e5eb76a21bb1597d9d7f71272e6cb392e431211c80a0673ddfa. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SEYOK1016735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbefee67edefda20a08f0e8aaac570cc50cdae76520c98cca6baf05041d64f9. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/SEYOK1016736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd69739627f5c333533a85311bbd9562b95300edf18549a7cca874edf3dfc50. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:28:10Z), 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/SEYOK1016739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3501b70e9e3dc0dc21b822b347e0fa827636da3bec288e0a670b1ba3ae965ed6. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:23:12Z), 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/SEYOK1220899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da28b349842a9e6a710790874103a85c14c802d45535ac9c852ee831ba90bcb. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCAJD2436280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00df42a2e17e5b3fa81d7206dfeeb58adec2e8674858b65ee1dc1433740f33c. 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/DEP950400168.