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 0x3d9d10609cb0c2f693a575d64329c31b29eb0a307e702dc4ee45b16d34ebe8be. 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/0aea5923-e807-461e-9a1e-1662b7243ba7.json and https://artists.proofprofile.net/proofs/artist/0aea5923-e807-461e-9a1e-1662b7243ba7.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 0x0298dd8337c2c5ce02f2485b791879c94aa3297af8a1d8491dea68419e37b816. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BKMKR2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4cc43258960596562ecf44dabda274518dff01d345adc635fb908c7444075c. 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/BRT9Z2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897f4d55e6fddc9f3b6df74912b98f715182483ab2aaf3adb75028a2aad723c5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXTB12000039.
Rabo de Saia / Me Bate, Me Xinga / Robin Hood da Paixão (Acústico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ee2e90b4609e28813d1a26c4ef191b47bd6bcf5affc217eb54f9f23079386d. 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/QZGLM2055967.
Vou Fazer Pirraça / Tem Nada a Ver / Porque Fui Te Amar Assim / Malicia de Mulher (Acústico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02caf7786364064c1d0b81b6ca1725edf3f5f49b1d64cc1eabaf152892c497f5. 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/QZGLM2055969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dae7e2a306c9a60a60af3dad4e0e1e813ea2d27f408dd0555e166d7891a343a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXTB12000040.
Sempre Seu Homem / No Mesmo Olhar / Morro de Saudade (Acústico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30151c5ce00cc29efcbf12c33635b0c2228cb5ea412385817dd4240675e69f36. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZGLM2055970.
Quando Olhei pra Você / Dona do Meu Destino / Instinto Animal (Acústico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d90a58542d20e32af5d97ee4566893d2d8a401849a472514b32ef1b37e3706. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZGLM2055972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f9c2aa7fd377e261de6f477cbaf147f0128b703b325244aec5be4a34b1d69d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXTB12000041.
A Solidão É uma Ressaca / Programa de Fim de Semana (Acústico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5409f1b875ccecefae4008082b4e670166a15be852e525ec6da68b615a0d6bf5. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZGLM2055968.
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
Sublime Renúncia / Amor a Três / Esqueci (Acústico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35630dc2bb63b09ac028fb3d24fc5c3d1ed54e5a64438fa9d22c9484a223cd80. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QZGLM2055971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d7d29f7c1851afb1cc802271ac5cd9569d728c9ba10da7744b544d7b1d5ac9. 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/BKN2V2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159d10ff5da23f3fbb5a7a0b9772c66248cbe42c4513266d36a9388c55e19f4b. 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/BKN2V2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7c6abc478a0fb3b912e7fb219964851d4fce2f5a6080b70c34f842a4b6bf45. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXNT62400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710c07f45ad6cbb2956f3421a4c2a4599643e56977ec6a75b83cbbe7c3c9d4fb. 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/BRT9Z2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d87d261a50ba04c52a159e438ca974b89a1dc1ed2d5be88251e96acc9a1f13b. 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/BRT9Z2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94a62d96587090eabe84d706b6cdb96f223a1b925d5004aca52b8c31e2aaf99. 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/BRT9Z2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7c55cb092e9da0a9267d66f24fd79555d29943917a062fbf40d3472c081ae1. 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/BRT9Z2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7616fc516301ea264bb60b0f2975de77530b784a0cb3dc3b5a60d779ab1b8e05. 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/BRG7K2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91d054773de41e706fed1f35e0132e33198605b8d99ef8df7cdc944bfa75bd3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BCSUY2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f097af2c322bb72896b4e50e87902c9fe2b75041001725b4acc0a02545ee53. 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/BXTB11900183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb7d6026736f8d1240fe8c5bfba5f7de8450edfcf10ed3321109823f1e7f567. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXTB11900114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9243c49dbed807c2a0b57e6720f3c8cf2e61152658432ccca94bc61c12d3b0f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXD3D2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506243add5fb191ce48ffd30ac898e8da1df6b6ab88c0d6e0280ced4744251a8. 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/BXD3D2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9089fa04331a17a8703737ea67cbffa130b8d29c4c0c6c3d89e5348efed5ba5b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BXD3D2100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99096a5f2ab8643cb997c140eec1fd454661bc96ffa95dc79b9d3970b282357. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXD3D2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f9d0d4217758b1521cb3ba6abdabe7b1052485e3f384d2d518cd2bd8ec8184. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BKMKR2400008.