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 0x484d3ff31e36965bc2c28b1d27ba7cf12148561a34f6e98fa482a68ebc2e1fa7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79b9168f-3651-4453-91b5-d61599b59716.json and https://artists.proofprofile.net/proofs/artist/79b9168f-3651-4453-91b5-d61599b59716.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 0x2027672af96dc20f4725e1361d652e818db0f0fa925b815008414c67af54ff30. Chain 2 (Bitcoin): anchored in block 957622 (2026-07-11T22:55:42Z), 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/PTES11402705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33300cc73ed237e36875e78906a521f7c72d12d8e2b70d0ef8721ddc40c8da3. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/PTES11402708.
Peão Apaixonado (Os Sertanejos do Brasil)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8d82e4762e188deb43d1ea8efdc4661a254f40404db6c80b2e1afa0c7ce5ff. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR59R1715646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c7720fc6e9da3afc48f3d337012a6652add267881d30d59312b4d0add2112d. 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/FR59R1715647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467b99d4117d433dd42a99e4be8d023dacd534a092102fbf01a6d8aa8932dc96. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/FR2X41869755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73879c302903d3c418e0d998bdd74dadb9dbd461ceb99be66a678e12543c206b. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:46:44Z), 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/FR59R1952917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73879c302903d3c418e0d998bdd74dadb9dbd461ceb99be66a678e12543c206b. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:40:25Z), 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/FR59R1952917.
Festa na Cidade (Os Sertanejos do Brasil)
Festa na Cidade - Os Sertanejos do Brasil
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2a0113a88d3d6ece7542409afbeb3a2d910c46c7eee4e06adba193604c01b1. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/PT2EO2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0aa5e416f94ca8cea3ca977c051d4c6296391d24eba48bf76970a712d28a3b2. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/PT2EO2400237.