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 0x5896964c1b8926a49e524f891b9f01117fd570c161e2348989aefe34b9fe306d. 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/58355fc0-b547-4d38-b835-9f70132dae2d.json and https://artists.proofprofile.net/proofs/artist/58355fc0-b547-4d38-b835-9f70132dae2d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Классическая музыка. Иоганн Себастьян Бах. часть 1
Созвездие Классики. Иоганн Себастьян Бах. часть 2
Мария Юдина. Большое собрание записей. Том 1
Прелюдия си минор, BWV 855a (ар. Александр Зилоти)
Эмиль Гилельс: Фортепианные сонаты (Live)
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 0xca0a08e8913cbfd8ca760806b106dbf7ef8e7eb115b1649d1ba885a9527a70e9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UK2Y21310062.
Овцы могут безопасно пасти' Cantata, BWV 208
Беременность Музыка: Лучшая Классическая музыка фортепиано для будущего ребенка
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda6e79daebebfdb92c5fa502c9cd0149417a6b515557b5a899f6efccca5d8da. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBG3H1300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9750dfdc0f98351b15bf6ae3e57ead7497ead790c63ff9eb4cb3e6268ba15c6d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBG3H1300010.