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 0x865883ae47cf813bae3dcccd035e08b80170d11fbfdfb74466942e213c50478a. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f75f7c65-cb04-43e8-b3c6-0f6bfa0a3c80.json and https://artists.proofprofile.net/proofs/artist/f75f7c65-cb04-43e8-b3c6-0f6bfa0a3c80.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 0xcfdd5f5a4363d40469f8ac5617a11430237ac1591a52d20e827b20e3974f272c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:24:16Z), 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/NOFLL0510030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f49d36a3486e6f82988e432d912fd1fe56527c0786eb340d1271dc0698dd1e. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/NOFLL0510040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc46e10298effb781112e7cac071f40d012f67c02d5b15d20b3fbb706a04a069. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:27:56Z), 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/NOFLL0510100.
You Saw Me (The Arctic Awakening - Hurtigruten)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadff729a32e1cc1269148287fc96c31bc44a44097888495069cfad0616d07014. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/NOZZB1205004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363c3993718a6566c086b2492ec65d500bf102b12a2bac5fe13c8de0df971dca. 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/NOZZB1205007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88fe5ad967d811cccdfaa8c96d9d71ce01d6916dae203923fe0355f01dd42bb. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:03:08Z), 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/NOZZB1205002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6656fa6134e5d4d3ee60cc7daf3bb381c7420fc6fbf53d0995f59127f3504c9f. 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/NOZZB1205016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1c19a2b338cfd78990fc25b0d09823409c292acb9452785b0f47794a13e658. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:59:16Z), 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/NOZZB1205017.
Svalbard Theme, From the Film "Orion´s Belt"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3787c3c60afbd035de63d1db6f318cc7960a244ff5e2649a0962d1d71a90ae90. 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/NOZZB1205009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93cb2a1744ca8df09bfd5560bc3ace324f301922a85bcf35634b53f512eff7d6. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/NOZZB1205012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6bed20e457b0071382d4d41c97ac9fd97bd9281a0befea67a606a1426590bd. 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/NOZZB1205013.