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 0xe0396557d3005510ac07e6bc21e635648c7871e48c7abf1f4e2b8d717fec3992. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f3a45d95-e7f0-4e31-9398-ddac7975a3a6.json and https://artists.proofprofile.net/proofs/artist/f3a45d95-e7f0-4e31-9398-ddac7975a3a6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Quando o Samba Incendeia (Pagode do Tatit)
O Samba Que Une a Gente (Pagode do Tatit)
Guenta Mão João / Tradição (Pagode do Tatit)
Vazio / Queria Tanto Lhe Ver (Pagode do Tatit)
Singelo Menestrel / Vai Vadiar (Pagode do Tatit)
Tá Que Tá Danado / Manera Mané (Pagode do Tatit)
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 0xbd8782fa370a2ac15c6853b658797396930c43ec81e7e639d4b2cc60c34a31f9. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:45:33Z), 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/BXUAV1900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534ff8f954b98a70949476b8f8cb75ba92c53f27db8a6bffd0946aa5ab5fe84c. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:08:51Z), 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/BXUAV1900041.
Todo Brasileiro É Mané (Quintal da Madalena)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f3afbdbf67bacb13a14d0d32264a008cb5d8776269af764a171dc5d31ca763. 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/BXDCI2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084074a73e1f6fefaf6e2d1b737a0c6b5360b4c9ceb7656580e6b63fdebc8779. 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/BXDCI2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadaa45cb6fdf7147ec086bba6c10ed02a170819abab7688b719cab98e61bc901. 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/BKTT72300016.