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 0xabb469fb4b8dc7caf807b459847612c5a88c3d888a2646f84fa5b3006642c3ec. 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/17aa4570-2ca9-4ed7-8b30-6efbc8355b5e.json and https://artists.proofprofile.net/proofs/artist/17aa4570-2ca9-4ed7-8b30-6efbc8355b5e.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 0x5abb8dbac4cc35a929867648438fe44a540c8a0515a155193dfa07d2873a405a. 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/USUYG1203931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4198134358159dbe2a199b6d516c185e88efbbb65ba49c417732bac26dd33e0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USUYG1203922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ae55eee6b96878c81c34141ce06460628bef304ea8ea173cc7819233f886d4. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:34:32Z), 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/USUYG1231652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeca14af7c623df2a75bebd5a8e84e27b9980eddb0f6248ef75166e2f6121e9e. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USUYG1339991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86992c17ffd45678d047913c204fb268d4d3cfd49bbf4d0419a54d855162f5b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USUYG1341495.
Brackin (feat. Mula Da Motive, 400 Keese & PMF Bo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998ff183168678bebbc3de045ac9f6ee0f906be1240349fffdc634829bbf3857. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:46:45Z), 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/USUYG1371196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e359d5da39a103d02dc84196634b01521ee61b5f53f6dc78a9b35a0db3b784. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZK6P2307082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25af81a911026c5a5cabd5474ffd966360f5e0da2b991ee719b9eab4cd0aef74. 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/QZNWS2409494.
Spinning Blockz (feat. KT Foreign, Yhung T.O. & Dada)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025483203781c395b58beb389a2775e7e936b291dfe1a6ef31acc757fd8be3e0. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/USUYG1701012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56fd4e4e19a28cf4aa18a62927fda79cf2e31a2d7a9d8b1ff5e342f4d13feebd. 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/QZK6Q2596107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eecc8572445a85fa0a05104a9ff29b476168af01d2b1043d5684e5e3c54115f. 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/QZMER2570295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf28fed1977a9b5bbea2947f9ee1bfc7c6ccc21eb799cac6dfb6e4127be681b1. 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/QZRP52553454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da2da0a19fbba1f4547b4cf79afc1d49544bb7132963e4a8752a110ae53a045. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USUYG1751827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f734c271f6cd69c2776445a258683e29b30758c04def53e01c39530df98f3e0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USUYG1751832.