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 0x9a576ece09b041aaf25923194a2049475ef24046d4e852dc72d3750374a7eb40. 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/5d8eb08d-4638-4411-acb0-548756ad6d2e.json and https://artists.proofprofile.net/proofs/artist/5d8eb08d-4638-4411-acb0-548756ad6d2e.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 0x304e52462abc5d2d19e86f6be49d833fd7e7b12dfab6337c2cea8813d053bda5. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:39:52Z), 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/FRX201744744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fa7bb7ea6256de6f09308c72202d69849e5701cde311ce8371bac154f10ccd. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/FRX201744745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb89caceaddf381e6c12225605285cfea7d32b78ee9ed7f8d975096b4d926c6. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:07:53Z), 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/FRX201744751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6a14f3e3ec941f6e62e82fdcfda797ff007be7e1f20d050386f9c08e09c576. 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/FRX201744752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f2e824369064bb35f8510f6dcd7fe3e52e813089fa7329369ea3c60ebab00c. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:21:32Z), 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/FR10S1786862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8959a02e66f19575bf7f890b5e6e939d0fc21dbf0c3131a3b356c92612ead7b. 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/FR10S1786864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa184c4980cd9f81a10aa923235023bc79d060d7caffc425f6ff1559c8d3e4da6. 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/FR10S1786879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65253b151099bfc361c14ca88c532328c14387d328cb502ab8df11267811c6b. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:22:43Z), 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/FRX201748815.
Dooset Daram (Mehrzad Homayoun Club Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11adab05334f50dc9dd813ed42e8fec1720af46ed2433b9eda58d91d1ec166f8. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FRX201744797.
Mazyar Fallahi - Best Songs Collection, Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340bd1736cd87da0fcc81048ad1943aad8827a30500deb325284f190a9289f6e. 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/FRX201744763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617fdb40b4fe6fa57586b318f1f01a4678ef11d02afe6621c4c158026cd00ee0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX201744761.
Mazyar Fallahi - Best Songs Collection, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b50778b60bab205cf7facd4ca5e72fcc1261b77fba758a3866ae044afa8e05e. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:30:57Z), 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/DEA371901521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31975e12788f4c3344d87a92a2449f1cc4acd4c3d3be20a6aab64de0ed4acd0. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/DEA371801383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133d9543a5cc7001caddff8003356acb2e506436cf08364b9ee13b8ba3079fa6. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FR2X41941948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20bae6cda3fa053983d523a88af23e5d12cfd59b853a98712f7ce61eee1e796. 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/FRX762188755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316e03be19a7fa8cd27f7e0046d124a96b56ea65b8d1e24dc26838142728e866. 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/QZZ662481909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1b0dff516239ed8590fff20555042e2a03b32d83980ca170ea9591f638cb27. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:36:15Z), 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/QT6622509983.