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 0x35e014508e72cb132ff83f124bae07e4f81c4f309ef530856568bf0823387673. 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/b11d9102-7a6b-4997-a0e3-aa5628617af7.json and https://artists.proofprofile.net/proofs/artist/b11d9102-7a6b-4997-a0e3-aa5628617af7.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 0x2b784647ec6ce07fe48fc2e7514a4cd1647de68b52712e36ab6b3a7d6b8f2709. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/INS189730475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa004ed264392c755f592ba38a430f93777cd48d89b892bdd14207f4fac047656. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/INS180024593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbb5975ec17c06475351530ee84c8ec7340c0559cdcac2ec33f74dc3b9b2647. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/INS180257465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41622b94534c41aa9a9fc0d5c76bbf5a55c8fbca1fc4c013db6494f1abbb6db5. 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/INS180376957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2784e4c13756a7d316daef4fa75cac5965b28ce2946278d5065a09d2ea1150. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:21:09Z), 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/INS180376960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0316eaa36b1779d7b5500645b23ae5ed77b56f330843bb98964e8da63720cb. 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/INS180376919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd421941db0c156b8399b69f58c8fe139a86ce0884f1ed7f35db466572df3c078. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/INS180376924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54fc9ab3c75b17a9271e23758fb5242b130d432af65fcea33a11240a10cd117. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:04:07Z), 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/INS180464250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6394bfd5323c25bb94e93a8da226f9dd28a798604fa7dc4573143c7efd62d31d. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:39:30Z), 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/INS180464251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1639c6827df7ca073f9bae264e06680307f97edf3527d9777609d2c16747fc18. 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/INS180464255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2801fd8179f12a1fa40628df9df123161b4fc8167172172a9baad5440a030d4b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/INS180506807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45d2b36f7a55a7e8d189d0f171af3231ffb0fa0f9ee989a19cbecfd4256b3af. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/INS180506800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01a818112ecfd3ef2b9e684bc3c676027ee1c9622cf3003b0b9acf7f12b13c5. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/INS180506808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49607cef12b89b102fe2b509ca03490ac7596f71efc1a81e349490d1ad936d7d. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:11:20Z), 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/INS180607006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0d4e161559ea830fe54bb03bced2e46c61df1fb9131f799f6c39d4451b083f. 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/INS180607013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728fc61ecd4766ad37e7c61b631e2cf1d6458e50d9ede45ef59c74c38b772180. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:08:55Z), 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/INS180603506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb219da3a3dfe5a12ab849d275a7b1b66f263af28d4ab763700dd4d62afd544d0. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/INS180603507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb328162289539192b375270eeb637c6880cd0617b108ef5917f12810dddcbf90. 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/INS180603508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091cf48312729db0d5c96c88c6a777db5342aadfc3fe3cc01df8a2ef102d0aae. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/INS180603510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f74a65e070cae753e6bfb60c5cf1660cd0401e8784f4b047949d4b517b07e09. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:49:38Z), 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/INS180700064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5cbe207b7cd95bed0513ee46b4c2a8d1b504cb8006bfa3034e5303af54171b7. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:40:05Z), 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/INS180700068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58cc7856402d9fadc834a337ed79f2a054884e5f307af9f03276a705278cfbef. 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/INS180700070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860400924bb656bccc83819970c08e9cceea22291c01c906fbff09abd3dfc8f9. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/INS180704585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3322913e27d44589bdc32af95eb042f0091268908580a853cf316deee8944e2. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/INS180704589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a0e90ec59a77caa01c6e406dd96a1e77b92350f4ba8873fc28cc5dd8574520. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/INS180706591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42015fb9f6bbd314f860a417fad0bd910548345b089d0d894c897b65f4633485. 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/INS180706597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e84b415e6b50df68765c6b3465d25bd9e8deefe9000500ac2ef987498fde46a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/INS180706598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036a29ebde1eac2c7f3b12b33afcea53b527adc0efe8225d63004899282cefe9. 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/INS180805589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfeb1c743c93e602b26c83bf5fb613ce2d018b12a7f4f453ac73832c3a6670a. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/INS180805594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc314ccc75f7c88a03e89760049f4264f3f62a4ebc73d3da70015e9010697bcfe. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/INS181302654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc525ea8725a8b418f894d4f1014cc312e020347743b0d7d996f36d725432d504. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:38:12Z), 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/INS7A2255883.