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 0x10b015be33d7ddd7a404125c118a60584a9b27897d5c909692e98deb033bacfd. 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/c7f01f29-8077-4600-899b-5082da75448b.json and https://artists.proofprofile.net/proofs/artist/c7f01f29-8077-4600-899b-5082da75448b.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 0x0ac5a14da7f72241bd0e965a5b029241678fc7bab3fce0d31f34d4932e1a953d. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/GBLFP2332757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33141cd19d4e8930b9eafe320662ed3a71015bb101454383cea8e11e6b2f843a. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GX3Q92463888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5612d85f980bdf7cd928b9b17a98b595c7d3d90d84ce50eed31174a87a1adf1. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/GX3Q92463889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db6729b7efeac853f2305892e8a84bb172437553f561290c661aca2813e1eb7. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/GX3Q92463890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7491ff596a935ae28514a2861d736a0e07ff78788db5dc047f5e7cd8af652059. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GX3Q92463891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7964a427418c566c4665a2f875e3614822e8c21929d8e35aeaa536ee22176401. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GX3Q92463892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7adfcc41073df9a499f6af672d883c31ff2552e2b7c2f0c96f59dc68511c4f3. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:57:07Z), 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/GX3Q92463893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839cdd49791997e0e276d333c8482c46129f00eb4a6c40c35e24e55a54c40534. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GX3Q92463894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11597a99d793adcbd77b2baee27a15d67c7ab612a09eada2d1f07e80f691490d. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:19:15Z), 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/GX3Q92463895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335753c919ed96839cb44fe9ddf2ff45506bd8c19bb8a85378ac3581ebc77755. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/GX3Q92463896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0591902e3b9c99606007c28ba39f2155ae8ffcdf57c2597f75f50a5bbaccdc85. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GX3Q92463897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d9960bf76ee6b52f692d0c624d0df4892673e9f75a9e3568a4a794f6140e4d. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GX3Q92463898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa50cf20fdc1ea16d60f1a60d85edac567ed0c3968ed8d0f3178ae7b6cd012d8. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:49:15Z), 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/GX3Q92463899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cb0f335c66de06795e642e9ee30e7e1d0e64320bb3f388d0a6f01aa575e16c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GX3Q92463900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1fa5aa2c637a24f83b38ac8947f252ca592288b2a156496e6986451e48432b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GX3Q92463901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce19ff6ef6a11303bf2bcaff2cc43499ba81cbacffcfc848c43c94c71654a924. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:33:40Z), 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/GX3Q92463902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbbe3c6907b88efe6ec119076504a74954a03d87fa176a1e1614ad385e7920d. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T13:00:44Z), 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/GX3Q92463903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa39be18b4b3e48e5f9a8b8629c547c96eb6b3d27b08d8bc93459948f1f3294. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/GX3Q92463904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e15499f9830d0de35b531197719535da18d9c678c30c1f1983b4a12b2b8abef. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:36:24Z), 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/GX3Q92463905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71529b284b6744f0cfb70d1c50a00bc677897b7337f4121cb9723a7fdf8d2042. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GX3Q92463906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21814791da4a7abfaec3b40cc44e421610320640a2f14cbc650ff83917aabc82. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GX3Q92463907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfce18ad2c930fef5311b9cf7f9c6081565730985cf2b98af227f8429f75ccc. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:58:48Z), 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/TCAIH2425976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e0698fb93fcd97533f01e3128dadc4158607366102bcaa44632878c213def9. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCAIH2425981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03389e090879f543eca5ceb0bea8614e91e631bfd1ec78f8f428d014d9e5eaf2. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:20:06Z), 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/TCAII2425993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde083ce07081ab3a1e2132f3128da06b35b956f139d891451986b91148a25384. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/TCAIH2426000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a74b6f42f34730f245e7e80f0b3d6c5f537ce1998d8b3f4e40b41c45f42f6ad. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T14:57:50Z), 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/TCAIH2426008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d708cb7ae2c8e3d6bec89c2f783b118cb8e787d0327c0dbb607072a4366e2cd. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/TCAII2426013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9694584634d2346da5fc4162bdea19d4ed8635cc36982c35a55a5e4017df07. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCAIH2426027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b7bd00525e4af80d2a8fc3c5b1d23c42a44b5526c1ea58a982927124017cbd. 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/TCAIH2426034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3542d482a5fa66847b9eab5e51f1a9ee22e68fcfd01bf8ec2618717b3365b2. 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/TCAIH2426037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee589852aa632211fb511829ef2de7bb18b3652a51c3b33cf3e89e7690104b79. 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/TCAIH2426045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3da464c4158debe3baa72a9f81abf2f554fe7e9d516327b5e5281cdca1a946d. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TCAIH2426061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8a69d674345c49086c668331cf6e340b3b9dec5d9898d650755d81d07514eb. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T22:37:37Z), 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/TCAIH2426064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad259c8dc079dd9574626f6ca1555fdeb43f6d7b5ba3f4de6adb6198e5b45a4. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/TCAIH2426066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76861c7a147bf0d4f7d9b0613c75b76d965fffe04587bbcc391e0f71a11b9828. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAIH2426072.