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 0x4883bb751a5561b4e094cdaff663fdd484b7076ad88301216a6f4963363060fa. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9caa2788-d1ce-433c-9f48-9b19b810c290.json and https://artists.proofprofile.net/proofs/artist/9caa2788-d1ce-433c-9f48-9b19b810c290.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 0xe4e028e772d752cfbdddc3eb5faf46f82ac05b37b5a187cadf054ffe6d6c4a36. 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/NLAM42200186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf4b0044ff616781ca801782754b22096e2a1584ce3c67eeb79472ef5fa9f9c. 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/NLAM41900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12311d2d149e1d73e9b7a0793f25e46de2d46fbc2fcc5d66f5bd04c2f436544e. 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/NLAM41900059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f30c736605d356f3133d851abead51d21eac3548ca0ad84740410d0d3ab22d9. 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/NLAM42400141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2074a7479101d8645d91090ff5f8ff77b9353613b3d9f0a3d528afdfa293a8. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/NLAM42100085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432412182f91ab37ecee92575261da2e6b355808246ff8b5b6a072b453ba2feb. 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/NLAM42000293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759de3c11a3e1b97a1f236be3edb3bf972083a09fd7208b8fc3b2d70474cc96c. 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/NLAM42100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f44ee6d121dcc66eb7bbc67ea7fe4346ccc37619bb118e911dda66066124607. 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/NLAM42100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c22e0d890ff3f297e1911856256742f0d589826464cb5b58a7eb4a33e148bc. 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/NLAM42400308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13fe1a06729d836407a29a6ffb862a5da4e16aecfb0cab37d6d0765c1a7ecf73. 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/NLAM42300335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb2ba64c992a272437d6a8039d66bba55261f830a7921b8f0c21dfa0aba040b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLAM42300207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075bf1c692736544905c5b4adf0386d8f3c821d0b04fbb78200d49f571a9db9d. 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/NLAM42300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8b5f6ee64d0db43d501e6bf3271702e4fdca28970329d070371ae5dabb0537. 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/NLAM42200139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5979afd6fc3982726fd85331a99c4eb7c29eee54d6f836e6e127d2aa09e5cd7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLAM42200053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d1316657c5cc4e7b0778dfa4a223317b74f736e7e486c749fe138b9c2538b7. 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/NLAM42100187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb963766579a1c324acad449cbbabfc3ea3858544a2c25af7496ed2d43fee0524. 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/NLAM42100184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a2cc827df6912dd111e18f2d8e7dcc6a596fc3dc8fadd1a9be77742dcd4f82. 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/NLAM42100116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432412182f91ab37ecee92575261da2e6b355808246ff8b5b6a072b453ba2feb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLAM42000293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa0bc35cc584acc1de76365e9d6a66cac187f13beaf28b0b70549da58337f88. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLAM42000249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2479a141745a6d9a0f1207d3ebd8381a750b96cb94e6341ae4599980f27042e. 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/NLAM42000190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1697daa0ed078e88132969b0b81a8c87a82342aeeb58a0c40b110398cebb309. 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/NLAM42000157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f27daaabfc21378a8b35b6cb48411f28c97b0bf54ad40c78bc0360cb6ce6af6. 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/NLAM42000075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f034b30113f86eb97afc658a2d171814f4e3b27fcad63bcd85618da8998b0d6. 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/NLAM42000051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8548cea968b12f797c1957decb759e14c370af640c6f86936f948a27d521e31. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLAM42000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d32f0d75348fb6347fc776715af3858f7d52099b6d7a811f4eb84a578057f15. 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/NLAM41900222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155622dfd525b4dab62c54051a606fdbf53c024511614060cd6e41826001a66c. 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/NLAM41900095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf4b0044ff616781ca801782754b22096e2a1584ce3c67eeb79472ef5fa9f9c. 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/NLAM41900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb802dc8fdf0d9c0c229d8cb2ace9f5d62900a4307d2fd1ef10c80952a3f40be4. 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/USX9P2010012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e5214c3954551d8945d0ae29032b98df3ae6ea1bb88f321b6894335a80cc9d. 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/NLAM41800120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d4e9a3bbbfb348fa204d5a5e356c2ec89567f290c2d073ae42971965424739. 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/QMFME2413714.