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 0x2843edf87488db155e8925c99b1c140ac6854229fec9405ee74fe52b351d0e43. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b666e34-062b-49a6-b239-0ed2e8b4ffae.json and https://artists.proofprofile.net/proofs/artist/1b666e34-062b-49a6-b239-0ed2e8b4ffae.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 0x8f18a262d93e6c745ec6895157261711e472be509236fd88432deddeb85e2dce. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TRCDR2300081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ccdc6718abbe578b4da58430ac67ce24c635354c16656c7d95272e786e6930. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/TRCDR2300093.
İlvanlım / Yumurtanın Sarısı / Arpa Buğday / Şeker Oğlan / Aslan Mustafam / Menevşe Koymuşlar Gülün Adını (Ankara Oyun Havası - 15 Dk. Kesintisiz, İlvanlım Potpori)
Aynalı Körük / Mendil Verem mi / Kula Da Sevdiğim / Gitme Bülbül (Ankara Oyun Havası - 10 Dk. Kesintisiz, Aynalı Körük Potpori)
Kezban Yenge / Zeytin Yağlı Yiyemem Aman / Denizlinin Yolları / Tahtalıkta Kalbur Var (Teke Oyun Havaları - 10 Dk. Kesintisiz)
Şeker Oğlan / Aslan Mustafa / Menevşe Koymuşlar / İlvanlım / Yumurtanın Sarısı / Arpa Buğday / Aynalı Körük / Mendil Verem mi / Şeker Oğlan / Gitme Bülbül / Kezban Yenge / Zeytin Yağlı Yiyemem Aman (Karışık Oyun Havaları - 30 Dk. Kesintisiz)
Azimem / Kımıldanıver / Kahveyi Kavururlar (Roman Oyun Havası Potpori)