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 0x2b471967c08e03fa7ea35556b8dc08592995bec0e978f44d96cd6c3001a720df. 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/2c74b74f-0870-4c66-848e-d9344a4fa5d4.json and https://artists.proofprofile.net/proofs/artist/2c74b74f-0870-4c66-848e-d9344a4fa5d4.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 0xfc06ac91b9efbe616df5e990b94522f18cde87bedb8971d7be8adc402c504279. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/ARQIW2503090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a8201f9896aa7940909498fe2fafa4221d43df22eca336a9e72c7552bf4a29. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ARQIW2503074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64078dae6c3e55996cea47cacbcaf1e9142182edefab95b23b6f479c2136419. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:55:55Z), 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/ARQIW2503084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f552168025264e06f1a7e3fa6d851db1aca4b80275ca72ca597904e4412cba. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:08:07Z), 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/ARQIW2503079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6cba11924d0bcc857b4869e5226dc25c96f25f30c30c7ba64f5b740e8622ec. 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/ARQIW2503082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f06025b8f7e9da226cc392848c8e06f140f010e2a7683b820f7d8f1e3edb865. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ARQIW2503064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22ba495902ea5394225aa0fb892337e0a9d9f7baacd6bf1c97b3f748c268ae9. 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/ARQIW2503072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddd8184e3a4e3ff8d5d4082075e07b9d0bb2ad3a0242131db3736c233218ca3. 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/ARQIW2503087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842fff6063d919e1e4314957265842c21ce8db17d09063e4058b92ab8bb64766. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/ARQIW2503078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa044317d4496e9fc039056f9ffca4ccc0924c8ca7cfe4124ddcbac8e0984f5a8. 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/ARQIW2503071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7f9c3298996f9facaab25788182e7d23e20a6ace11b187fbc98cf1df3d942c. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/ARQIW2503089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa877ade9fadc2c13fe933f6b8d376ee2ccbd3fa4f1ea562cd94102f28df53f56. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:03:20Z), 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/ARQIW2503096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f510141d21bf0733e685c77edea180b254cacd6ffb176095b3560cd9c668a7. 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/ARQIW2503073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a1983acc2c597f6bbc4805c10186bd3d3a74e2b649f6ad5b64b7f0dc617d4c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:50:59Z), 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/ARQIW2503093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104f87e5f5c251f33a8c7daba51ae40df891b209af3c809816f8d2f4a1b52fb0. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T11:01:16Z), 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/ARQIW2503086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4284b1ceea0ec5a43cfbb51d7198bcacbda6db84a3d5d5da202b70423c7f079. 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/ARQIW2503092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa231bff4e9be38340d149bb10fa0bff7c2c97f4f3e4737e8c4cfc281fecf2d7f. 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/ARQIW2503075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d36a41681640be357edaf75a8800d35b6c7045eba9694b55d421e6569fde1e. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/ARQIW2503080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08745fd11b6d41cf07d2bedae18e29af0d21503f75db29c2bcef390ffd7f44c5. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/ARQIW2503081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea714e018381beeb5485b170b90ef85bfaa74a011b44805226e9f247b1ffc55d. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/ARQIW2503055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf891a81248e82bffb7562bd4777552bf2527f461fabf02a86df8bddcfbe8ec4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:54:31Z), 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/ARQIW2503094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f0c57cad1b187f302276acaaf736328e15a38f46f7ae8ad2a82f1593e5e47e. 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/ARQIW2503088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d16a42dae7886f8dd402f70e451794295817cca031c4c1a5a44716d18736fdc. 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/ARQIW2503070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c64e1d979a1cbc466638b3de5a7e8452f13559aca0412e67bc6caf8c7c58dc. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/ARQIW2503076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6ff70b5bb04d6c4611676ec4df3f08c87bdb74311d32a1b55edf8ecb0f7da9. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/ARQIW2503077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b2c0414f26f28743b7c887b4e6472cfbbdfaddda7843be88b2f606e673fdb2. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/ARQIW2503091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedddb0bbcda0c7db9fba9a565275f76014c7f2c34a8a681e543d984fb8841114. 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/ARQIW2503063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1bfa23ae90db4e2e93198338bb4a764ec5e26895895654fdc42f0b09feb483f. 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/ARQIW2503083.