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 0x851fb994cb7cb74a3edd6d041809a3f2e51068d70fdd7ff615d615aaaa2565ca. 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/1411db15-86bf-49cb-b879-c300672ba191.json and https://artists.proofprofile.net/proofs/artist/1411db15-86bf-49cb-b879-c300672ba191.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pai Nosso (Our Father) (feat. Leonardo Gonçalves)
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 0x42e563cac02b8a495e1d1a443d19810fc155b753a736586420891989714b212d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/BXL9T1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844c19ba69876f24be7c6d1eff59329e5cf3bf87fc634a1ea395e9659e243bbe. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/BXL9T1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3e95fecbdd612bbcb2e88df586ce35e16dc5bbcab36338815966013079d74d. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/BXL9T1600003.
A Esperança Entre Nós (feat. Lucimare, Eros Biondini, Salete, Adriana Arydes, Celina Borges, Ziza Fernandes & Walmir Alencar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f54f98997f634eadb13d61845e1dc2fe1741daa4f41f3eb31d5ba41370b37f. 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/BRSME1300604.
Brasil, Música e Devoção (feat. Lucimare, Eros Biondini, Salete, Adriana Arydes, Celina Borges, Ziza Fernandes, Walmir Alencar & Eugênio Jorge)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cad492acc0aaf5ed4f843ec8058e2b36bf786234957b89730747e3a99344221. 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/BRSME1300605.