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 0xdd2fa5b0ca0b541087aefe00900b71f13f3d4bbf3bed79050c462eafa86b60ac. 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/595c6337-7988-42e2-9281-b04355604272.json and https://artists.proofprofile.net/proofs/artist/595c6337-7988-42e2-9281-b04355604272.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 0xfbf74c63d05a7f79500b4bff92705e678b56f19f336fa60fba3503029a9dacf3. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/PLC062384876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb259f1d6adedcf7c4873bc07ab9efd2fe6bb6bc7ce46641a1d6f64716ef94d9. 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/PLC062396383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76976b4a361c5cfc64e903f52e49a741db4d2f4a57750bf892a9ab097585e9bf. 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/PLC062398392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb259f1d6adedcf7c4873bc07ab9efd2fe6bb6bc7ce46641a1d6f64716ef94d9. 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/PLC062396383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62037dee53a3714198537b685137668a40cf0b0f80aa16f219209da8617c1267. 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/PLC062400272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb227f5ee79175c8164722679fd5312d63426f449ce805d97c7fc6fd8735f8325. 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/PLC062400273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c94cd99c2cffdcb4c3213514834e4ace46c87950986e405dee9fd9b2c901687. 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/PLC062392494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156b7a3ec0ecdf1649fde63d01f836ee77b522abcf766eae7af219d4068e46b9. 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/PLC062400275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e16ac2531c9c19a85c58988022c6d1a1b5105a77b6b7623344a1fbb57f9a2e. 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/PLC062400276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c280932c1ae621df36cc9d4f2d171c766ba6215e4f9e2ed72c6292419c66b0b. 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/PLC062400277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa93b19f942dbb3009b6d2bcae30bd62301040776c333272a3d217202aefba5c. 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/PLC062400278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58053c9c7d7f6398f03bd4bd7256d8948e17e9a9aaed75b2c568b110060a6ab5. 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/PLC062400279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6040489951356b0a670445d208628a345d1bd470aabce8a737cc26587249fa. 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/PLC062400280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a30a079af45ecddef1a78b0739528f3ab2a26a8e47d269b0ac467562ef2ca44. 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/PLC062400282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474889b44822e65872a643b60ea80d7b29afad129eede5c25cf0e849a8c72019. 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/PLC062400283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaabe8f1513bc6e91e9873a6d2df4ac88a972deacb8bc7aecd9f0c2aa577a01e. 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/PLC062400284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2afae98e5c5b0844012bf5c89ac3f080e0d19e4c98989a5dffa4ba83771bdba0. 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/PLC062400285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b99423257cfabcb5f7b4d1c9b1efa730a4055a7d6d2232aeae0c40fcd90895e. 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/PLC062400286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078a46927af7a70133737bbc90678bb41ca8f5d2fbf4132f3603645782de61f3. 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/PLC062400287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6961967b465196e4b6efcd8231a09d3f0a68179a7c0fba882f64c871bbfe70. 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/PLC062400288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba34c7ca8f735a521c9c7544e335b293b5ba8acb0998ece337f9084dd629fb60. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:53:23Z), 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/PLC062413369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19de87e212feea62a39507dbd74414b266a9824e0cfe3b102ecd60003466bec7. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/PLC062433022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc8ba57975eff87ac113faffd22cbfa9719eff9d6d463be803a14f9edc56a3c. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/PLC062436830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d21a94267c9bd951da696440e80efdfa30d9134a635a831642cac3cf6c844e2. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/PLC062521153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd990e00323e82f87e43e0ac6af527c0862d807b93efc2b818bd4bc5cb31840. 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/PLC062521145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26a11053f5a8431876d99f7b6ba9e007522321623d559bff160ae9bb493f6e6. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/PLC062520677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368290d33d6e64153e29dc269ffae600f92cce596927af425a32b8db30f9340b. 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/PLC062521152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0cf317d43646bad1d1642ffa5e5efce638431c88967b45b618023adbe8c4d7e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/PLC062521150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee65e17277f97dfd0bf63fa5db86632aeeae284d0b7490d17d6ded70ee36c22f. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/PLC062521146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7d9bd6e7cc1261b169699bd04c9200b4c2d308ce4b8f6297fe34ba2e695c89. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/PLC062521144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe173a3c1aaab336961b7c34457c02de1452d3c91620a17ba13dcc4c7319b2fc5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/PLC062521143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab528d69e2cd95ba462f40e217877611a39b5df8f23dd3bce235ecc140cf9a28. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/PLC062521141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e80533bae80399e2f965e863ac001f72e4fdcd752ca189ec8c9a253b87a1486. 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/PLC062521140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107697e543775a6b0e5546b489caaa005ae5308ef4caddfca0378a453040bf86. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/PLC062521151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d7cf2e51297058d33e35633815a8d3348a3f80b08f6827b10e43f044fd1bae. 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/QZES62452220.