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 0x58658637bfefc09a01f5623e308fbe8afb78aef35d8082ef607f27884afa1d95. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7832bb3d-4580-4995-88df-9d026c8bcd23.json and https://artists.proofprofile.net/proofs/artist/7832bb3d-4580-4995-88df-9d026c8bcd23.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 0xbf980a6fde4f915501b5836398aa09410074d461ab642268488b724f0fb563fe. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:22:01Z), 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/QZDFP1960731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8ebce047e4c87f3ec327dd4ff4f221f41b21b548328d205f6279b5808e61f1. 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/QZDFP2005662.
Shej Shej Kamav tut (Mato Kamaro feat.Kaminiko)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c65b3b8330b53606705a0ccae3919d58bf9cc9774fc4e5ac15af0b581695bd7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZDFP2107368.
Ben Cristovao x Prince Marián-MMA Digi-Digi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd974ed1953e1d34f53de4f3c58330a40262360da3182fa4f1a34681d75e5f0d0. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZTB62509015.
Hard Rico x Yzomandias-Narcos (Prince Marián ClubRemix)
Hard Rico-SI JE$LA(Prince Marián ClubRemix)