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 0xf783e930adbb44611edcb5f64eec892458c18fa1645d1766b2ca0f066cfebcc5. 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/e81425e5-ea45-440b-9a95-6e55ac141fa7.json and https://artists.proofprofile.net/proofs/artist/e81425e5-ea45-440b-9a95-6e55ac141fa7.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 0xeff9c67de01fcb318c1c3d6bb39836c66c285eadba3b11aacd79afa1eb69bbd5. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/GRL019600239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a5a9ad0acd03f7c3a9ec0c21c5611a5e761d440149775f6d96802decb13308. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:09:58Z), 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/GRL019400207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3fab2bf8e16dc428e77e363d1cb528247cbff5a38eb8fa549198b1d200f6d96. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/GRL010000092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e339b91d5bdd15cb9c982b5fd6c9917f0766fe971bb7f7671fa2c46e8628c4e. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:20:00Z), 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/GRL019400211.
Vasiliki, Moni Ksana Den Tha S' Afiso, San Star Tou Cinema, Pare Me Apospe Kai Alles Epitihies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4312712b03585c3535d1a77dac34b6d31ff9a37ffdbfe0fed1b5dbfc07d697. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GRL010100335.