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 0xfc62df8ffe0309daa1558f5a19feaa1cb32c2ffd10a6f631d40e9906445c5ab2. 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/85ecb19a-bead-42c5-9567-67c50e265b14.json and https://artists.proofprofile.net/proofs/artist/85ecb19a-bead-42c5-9567-67c50e265b14.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 0xf1eb353178b0e8c5802f05d3235994574aa8e9ed67ac6d648a76cce914eed8d4. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/ING761800110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d24240f71f01906da836cc0c5d5d8098b70ce7fc6097db71d513fd9fd9cef4. 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/ING761800108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc2ec728b8f4a480edf0a73a05972d54bd92e9b1168e573c490718fbe4eb8f2. 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/ING762000079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617eb64e388988aa5b33897ada1e8604c04a60e68cbc5909eb80660116406bee. 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/INE302100137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7116a7d03166278d83287f30192004f95cb076a487b7f62e3f27746ec2160a. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/IND832400672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35414f6801c1ee9cd078621144957fb1f175ccffa5f4b61e17c986a33f6de44. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/INN242503295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce4aed153649f5948047419b2dc6ce5bf36cc5041f9c2f02c3bf637aaafc18a. 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/INN242503283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c19293a1cb445a1b1d5beefafe1dea49977628f90f3f79a169ee14470a344d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/INN242503303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91323170fdd61ecc55062bf22eefcf7d67c17922fc0b27555740bc6e7f088e1d. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:25:38Z), 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/INN242503305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e9d6af8a4968d789d3301c2fc3b7cfc42462e0fbd4e9614d53ea31edd88c46. 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/INN242503312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87e60e7b65861db474549165fc0a725e0fead07be2a561a61554fb7ce6c7389. 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/INN242503316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f75ebdcb401e99f50607ccac46c0373d260a72c0947d022c7ed0b281b80f23. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/INN242503319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011677440e6db21ed95101a314c6d1416dd4bcf245216a454f830e5afcf92180. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:28:36Z), 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/INN242503318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cd495e48c3fca499b33d96f4830a4225a676757d9473a2dbbe03af1e09049b. 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/INN242503282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc023a248f0cb383f9c734c616705f20f912fa190194f77033746ff75e713a04. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/INN242503615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f635ce026956e1663100900261d4a3c1267dbcf1aa7ed59567a1b4b9f89d8aa. 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/INN242503594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d1ab413383abb9d202a47a99b8735ccaf9aae4e74bc501b882654afddbf774. 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/INN242503608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13da39a71feeb706e421222cf27872798b4ac4e728ac85939a201bfbd8218e29. 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/INN242503596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5f76d90218ea13dd6c42d17e03aa70b3d90976ff259d941ba03402142e2414. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/INN242503617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f997b05c2fbcdd358e2e1ff88a3885634753387f94cd73fca5fee532b9c85df. 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/INN242503599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23df68ddee30078125202087b95516f29bf3553cf47f9024c382c1bac97f296. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/INN242503603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a12bb10e8846d306c94c11bcc30d9f1bb12d9fb1e8403cdb71586dca9161a5. 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/INK882208345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a948a40098b7069ab548fc3b292d5fe39fe0c5c3e23245698675f9488edbf1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/INK882208347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe521ba96e41e7609af80cf415abb9f4b4af9258b3fdd2a542191172231d09880. 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/INN242505157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348eb95d93d71de0f8db5d0c5fd46c2eb0d6c09f68767ae1fe7b0eae9f96e731. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/INN242505161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35a2e0b3d1b51ed0b8239f9e6ce26d6dafd4a0bca559d031990169bce25e5d0. 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/INN242505159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf860e748f280937ef0b5ca047c7318ba25b38071f3b0d4978ff88332709bc9ff. 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/INN242505158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf33aeafb8ec3f1c6ba3109c6251c46adf6fe7a4a407ff66038df16fe6fd3028. 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/INN242518253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682f6dd46fea8b726bd714c83003ad4f76a67590f073e69d24eb965dbff467ac. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/INN242518252.