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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc905e4fe582bfcab83c8048cded877f978319c41e82fffa0cc85bb703efa18. 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/f2299eb4-cb06-48f8-99bf-a19b4ac2a248.json and https://artists.proofprofile.net/proofs/artist/f2299eb4-cb06-48f8-99bf-a19b4ac2a248.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda78d15cefb64606b6767ce1ceeb160acffbb161dace03e46a917e87c087c637. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTPX2381222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32e410f73840ff6e6e1081853b47705948e0aec801423af335ca48c1dc6bd6f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZRP42113407.
Forte Forte (Pa Començar O Final De Semana) [Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260d7ae2341d590ce763a0320ea5b7d155fb676db31b8b5a7737e425e3d0ad9e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHZ52235004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33d121dcb250ff3a0cf209da0a6f4deefde2aa3f148e0d821535d9fbc93a8b9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZGLM2262220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288ec57fe24ba4bfe9aa4af66c1ce167fd8d8072167df0d4b6c7e53520738794. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ESA011582061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eef168c3a0348eb355aeafd63da32deca276f10a47bf8aaf57f464634c37e55. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNJZ2116447.
Nissa, Tibau Mascheroni Electronic Sessions 1# Serra Mode
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de8ec763a2281e8b504b009a9330b060876d9c03ac6dcca43ef7830b1433333. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNJX2154517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f3198553ca716739a185a91a1aadf6eaa10f05368d1fcbfcc75350fbf4caf2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZK6Q2018502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5157d8af19f383f62014ec2d4bdfe635b2d487dfd4fec258c272205dd1346053. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHZ42013139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa16b66ae10357bf0ce8ca298d3a6fd7dccfda321952bcea6d89face3903dc04. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRX282434295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a50c80c3f469f340cb5678f7a9e1f265a67eab4813a821fbc77811183422b4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ARY4P2400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83cf15a91b55c0f911fc9bda2bc9e7d822b2dad6bd9da4812b465ad8b541069d. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ARY4P2400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc14e4c0fa384b85dc73bd69639104be0aedd0c37d1721d498ae5291787c250d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ARIXB2313434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d315a37481b986fd6544f8b68fd35354aca1249f991e406e0e12a67e192cd3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ARIXB2311089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a98dcfe86df3de397204e1d836492ee22c739346db4215e9dcef4cfbf8ef31. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ARY4P2400333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45fef3d7f21790077b5b089d4a7bb2fe5353cc4d1a7b9a97fc75e00c305cd5b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ARY4P2500115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707c2930b9d0571564267ae5d0944475d338e41af3b97834025bc815acebfc3b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZHN92582892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3be5538a16d282d75493b3b9b756fddd5a3e68ffac95ab548aa8ff48548520. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ARY4P2400568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2909f81dc2430e7ba869b8061a001c07240cf32c3d38e4962d5c9d1ab6e42bd9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZWFR2403758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe992652a5c701163364a6f322521e9cbe4a41ba60a622164631e3a01e1ce9d85. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DGA0M2478458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0a299ad495b224242fd4eadc75f99d957138254a7ec9b6efdd557eb481a3df. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA082437592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6ec6e235e682771a981161ee0f63b915056c4a1a1a822d651905e530bd51db. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USDA12314969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9dec98e625ad98f5594c05cf8c782b42b7fe0e5f1db385a0d67e3528c5ad25. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USDA12301023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c18cf01335e73195d8aed731a731789bf161b1c672c4c4cfb7fd232741a7df8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZDA41994656.