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 0x57b8535d094c88cba6fd16b7cf5fc4a0b43b7cf63cae62782215ce5644c360bd. 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/ea8047a4-e8f6-40d3-a29b-e1af02c28f65.json and https://artists.proofprofile.net/proofs/artist/ea8047a4-e8f6-40d3-a29b-e1af02c28f65.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 0xbf0cf41fa70f194b87dab8e67613017356d88fef295d8f7d21a76ba1a1013dbc. 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/QZTPX2313279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765ef4c5ca44312933550bea494694e109a2d9058b43e08def78c50424669f73. Chain 2 (Bitcoin): anchored in block 957839 (2026-07-13T10:06:30Z), 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/QZTPX2313280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f9300237df6db8fd5039cfd63e0cc576d374ed5c71eaa15148e5083e78a007. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZTPX2343922.
Mix Chechito: Siempre Pierdo en el Amor / Pienso en Ti / Quieres Verme Sufrir Llorar (En Vivo)
Mix Chechito: Siempre Pierdo en el Amor / Pienso en Ti / Quieres Verme Sufrir Llorar - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b7de529692112162fe20805755a14b81a61bf5957f0695226ea101ac84427c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZTVM2334946.
Mix: Siempre Pierdo en el Amor / Pienso en Ti / Quieres Verme Sufrir Llorar (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec967d1d32a9af4bfd7acd3ffdf1f1cd0e42c4117b5cb5e15a968b56561651ff. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZTVM2334863.
Mix Caminando por las Calles: terminando un Amor / Caminando por las Calles / Los Hombres Tambien Lloran
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf5adc5613abf3215fd86027f661b27aa66979f52972ec2999ca38bdfb60990. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTVM2342464.
Mix Chechito 3:Bonita Pero Mentirosa / Jardin Prohibido / Colegiala
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6d4220f57d4a3b045402515e35eb7e0990285070a67b41ac9ccd2236af05de. 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/QZTVM2347049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9a8be07eae7e123add01bc66bed7d6065558d5297fa980007606eb3f9dd649. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZW9M2355828.
Mix Los Cómplices de la Cumbia (Live Session Collaboration)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03215f5910dbff6d876d69eb1de8e7596408ee550902969ee81c22613868fec5. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USA2P2416082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeac52c386238758f17ad141b61ba775becd5882178e993c364f821118d06618. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USA2P2416084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96c4e7d793a8b7236ca9c9cb5254f7a53928fd019171592cd52113572727e7f. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/USA2P2416088.