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 0x0104b97141663e02dda48aa90a5e50699718265f97dc4c069cd56478a4338ee5. 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/99f2b5c8-75a4-488e-826d-dae3f6a123f9.json and https://artists.proofprofile.net/proofs/artist/99f2b5c8-75a4-488e-826d-dae3f6a123f9.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 0xd2b2e81756f5f6dfe5be726161495ef45ef891e48fed6f59e224dfec81c435cd. 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/QZTRX2373606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b034fd40addb82f3cc1c33c11c6a02e6046f4f319ee284e351ad749f5db9a40. 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/GBWUL2340150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502876da7c116a9344ddff2d5cd3b772ac732d7ccb702e0faa12b0cbd6c22a4c. 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/QZTRX2373614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f23effc47f9fa14624dc07a8071a31dbf4af50765c5a7bde717ff56d4dc60a7. 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/QZTRX2356453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a18cbc05a266f7de44345ad02b217f6b8dd8f02c502f73afa81d27d75ea1673. 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/QZTRX2373617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3386d1e5c7449320acb31879e779e0909771cd0d760e443306bff22e64134c09. 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/QZTRX2373631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52d1d4a477eba022f633e47b74cda4fd788e88329cd0be3209dfba71917afbf. 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/QZTRX2373638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd7bebfaff4d503d5088e72b786f464a997989d5665d33e2bf07787ecc9ad25. 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/QZTRX2356466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd7bebfaff4d503d5088e72b786f464a997989d5665d33e2bf07787ecc9ad25. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/QZTRX2356466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f23effc47f9fa14624dc07a8071a31dbf4af50765c5a7bde717ff56d4dc60a7. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-21T17:38:12Z), 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/QZTRX2356453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b034fd40addb82f3cc1c33c11c6a02e6046f4f319ee284e351ad749f5db9a40. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBWUL2340150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a1601c9e489d160a3bb5f58ff29c421e5448ebc00c9b2001e7508e44622fe6. 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/QZFYX2398887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864c9f57a8d7d65b761261e00de4e939eaba5ab187c633dac3a984651918a925. 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/QZTAU2266556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883b193dbc0a955f4fc815d3005adfc47cc916d9edcc3ed5b1726a92adbc6ae8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNWZ2215990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e63a7b03bcc87254b0ef5694ab5172287b01d98993d3ea74b404df9a4bc8e0. 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/QZTAU2266557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883b193dbc0a955f4fc815d3005adfc47cc916d9edcc3ed5b1726a92adbc6ae8. 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/QZNWZ2215990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6d0362994fc488901d758dcd1e69405f962cc0524ac2d7a216bb881524293b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHN42111145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23880a0dd18d8b46fce20a51b230242418cef6883571f66cf1bb7ca0251ba4c6. 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/QZHN42110963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2605cb092302d7628b695212c7009c2d5f59297abde77a34ccc95619c84d46. 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/QZHN42111146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61cffb3e2ed39c01e8b46bb95e0843901c2f5e4c43e136fa77630f13493385a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZES72190837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23880a0dd18d8b46fce20a51b230242418cef6883571f66cf1bb7ca0251ba4c6. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZHN42110963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61cffb3e2ed39c01e8b46bb95e0843901c2f5e4c43e136fa77630f13493385a. 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/QZES72190837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8b3556554ad9e0b1a426210b61918ac9cf360607d3fe47307261030449b692. 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/QZK6G2069545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f46b7a2fe5484e547a59010cc236bb1a582f5f4cd3feebfd0ffda68df33d3e5. 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/QZK6G2069547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375f71b381dc7483f7efda31b80e66283fb01ddd3ee05f96755524478d75f0f0. 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/QZK6G2069548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b0f0af54a11ec7cce39579b2f8a47843b376e4fc551cb2b4507077011e5761. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:39:00Z), 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/QZES72073739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69494bd6de8738d1f93003775aa416a6785459595492c1a02b66ae587928a0d4. 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/USCGH2003020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de02104121365ba1a09a56f45b69942c373c2a15df954ebdca40ce379e8298d. 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/USL4R1929346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64b17e6317973eac0168ced4d470b61b12fe6c841485f3fc8ea8cd66cadfcf7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM21957493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fcdfb4beb512136a7f4cc0322d010e244bf84a0da2f4a4888d656398a15a53f. 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/QZES61925597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9456d5b6e78e96f7d7baae8517b6f52113f098dec644e74edc9acd9d558b8e89. 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/USCGH1907286.