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 0xc8894fa4a70c5e1af6be8f2f986944b974c100e2c5faf4e0ba0f7c785384894e. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27efe98c-c448-435a-b567-6ca2d3f1b158.json and https://artists.proofprofile.net/proofs/artist/27efe98c-c448-435a-b567-6ca2d3f1b158.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Passeando pelo Sertão / Eu Tenho a Senha
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 0xa7c4f2e915cf5179a3553fefc34c768f8e1c3ae585b973f457a5685268f89c09. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZNJW2359437.
Crina Negra / Meu Vaqueiro, Meu Peão / Gemedeira
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fe82cdb0044ecdeae9fccff16988d59736dd5976d2c940e276fef1aa1404c6. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:50:54Z), 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/QZNJW2359440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac69e79fa72b9b4e6ff687a725a8522a90cfefd85647bf93f5e6e0778eca352. 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/AEA3A2114448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266f39227fb7800ad71b68488284aa3247336de2bb8528bc000ba9cdd8101dd7. 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/QZNJV2503270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb63cf25006fe68e6788ad812bc1160b8aee1b99a85d096be6ead37088211e5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/AEA3A2117757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e18848857f48019f9c401cd499b2f1dd2b305636d3e6a2ca31cbde67f88c00. 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/AEA3A2178490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a116d723dcd21e0bdaf4f0cde0cbc2dea0575724e9283a56e737aeb69932669. 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/AEA3A2109722.
Onde você está, São João São João na roça
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37b39cb38d2ed30da5ebc22c5bda3e98c990dc29fdc0ca34cb180aed4f3b70a. 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/AEA3A2129588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2a806a2072a7370001d25c784045a5ff71bdb0a7b3fabd5a2b4bc8aa720ec6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/AEA3A2172344.
Solo Rainha da Diversidade (Mayra Hislley)