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 0x68f86476f1e43eba1c16aa76076eb94c272deca1602c2ad8e1483e1c0c4c8d67. 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/0d34d152-9c78-4d3a-8a7a-1af17d30e5f1.json and https://artists.proofprofile.net/proofs/artist/0d34d152-9c78-4d3a-8a7a-1af17d30e5f1.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 0x329581c3312484c44322a9aac80cc941eab693c1905dda1a817be728e2276657. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:48:13Z), 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/DKMM11301501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd92517901d5c583558985684b854761bf735522d76080bc83628e160fd274dd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM4TW1863554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d454f8322b2c4a3b94d963bb68935d5de87df1d3edc5b95b62526640d3aa398. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZES91887857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950ab5be52b47770586753ba97dc1e8c9ceb9a6dac5717502325038e0fb6a3b5. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZHN71990208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7a3ab7cab052bfb33c949d9a26eb27d0c1f27e3c48c2418e0b78f879fe1bdd. 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/QZFYW2073105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e1035513b6d651540c0d0c2420f404cf5d0d31134df04f768205cf9e4852a9. 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/QZK6N2066316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdfa5e55e2a010253305c9cd5018d6ff698b7b0abb4e12065a653a950b21a53. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QM6MZ2276552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e06a441979d6154427bfe684a1987c9dbb871ddd7fc9d83f2707f299aa446f8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM6N22235916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df90853bd5335a769d71d6b597bb31a06c88033a5c9c96f2ff7c626c4f678b0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QMBZ92249183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a1ae8174c52a20f5e5267b0c6e64c16b359aa174aa2c3a4e13c620de8097bf. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QMDA62208162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda60bb1006d4e68619bc335e71aaf4f0bafdb14cbea7d672d1def503bd591a5a. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/DKG2G2300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a1ae8174c52a20f5e5267b0c6e64c16b359aa174aa2c3a4e13c620de8097bf. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:06:25Z), 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/QMDA62208162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb41d85f03ee65e1034423305e13550066454b686af5f298c85bdff221dd227. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DKG2G2300301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19bcdb7786a77b9d1d9057ff17e84df31a592bebbb26c3c4586d6c110d48e7ca. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DKG2G2300501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba3e9266a50d29d772449acff9fd342ae0cc77ea96413ac7616e38e70641c87. 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/DKG2G2300701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9224e2f86938a32374f18162be77659659ce56a12069aacfd9ec93c9a6f95197. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:18:55Z), 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/DKG2G2300401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda60bb1006d4e68619bc335e71aaf4f0bafdb14cbea7d672d1def503bd591a5a. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:20:25Z), 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/DKG2G2300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0144a468fc7756da3a2715263c0fe6e5f30b9c51dc0a266d2b28c344742a86c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DKG2G2300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a1ae8174c52a20f5e5267b0c6e64c16b359aa174aa2c3a4e13c620de8097bf. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/QMDA62208162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25a5f70abe2ccb6cc919d59b1287aab6fdf58c6a23479b45b9d104eb179f900. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DKG2G2400501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a6b26468f71aa4af94ae660ed3d04c177d14ffce9bd99121f71db8e1cf52a1. 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/NLT2H2300372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c23ba5319882d1958e1aba377de6ab387db127aec39a050854db61b1592b618. 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/NLT2H2200314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee6dc7836f0a8a1349f3966d5bdce4fec09e32056581eae2ff342dfd1484fd5. 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/NLT2H2100884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c619c55bd0423bce45a5b9be4c7c2dbb80a5e855706699e5a34a2d959df13b. 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/NLT2H2100494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe439e4d12a21474ba93761f6144db0f5fa5fa2737536a548fe3a163c81afc125. 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/NLYK92200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda72c6cdba2f3bf8dc36ca19510451f44d806aa51519453a8d82c3a425914eec. 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/GBSMU6965475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50db3ea6bce27654e0654a7bb29a0575bc09b57cf2362300ca448c386f15fdd7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLT2H2200553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6e49cb7859bd84acc21f42faba0b58ce191b6a0170c84dbb01c48145815c74. 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/QZK6K2201932.
Like You Used To Do (feat. Michael Hausted)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfdbefc6261d43083f7d7e1c1e170fadf0d47427dc3de448d3b813c412c2fa9. 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/BE8LH2300298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfdb066ad6dbec8b3d86c4dc4f3d02734e87fd91bcbb4ff5f175630382043cc. 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/NLT2H2401363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37998c146447dfff549565aae26f9c4bdc1e1f9e54c8b3693f347e325a4c4910. 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/QZTAX2260893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be8dfda6b8bfe5c924f3e9ead1f128c77c9e3cdb85a054f3aa2f4efaa0e4bec. 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/US38Y2309115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37998c146447dfff549565aae26f9c4bdc1e1f9e54c8b3693f347e325a4c4910. 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/QZTAX2260893.
We Belong Together (feat. Michael Hausted)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457a15ab872f5d7fa5e689e34ffcba34c4a13cc219b1ecfec893f1828232626a. 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/QZMEN2302186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0b3e294dc4b7feaf39878643b6ef557e78610227381df0eb76afb7a9e01989. 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/QZRP52254860.