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 0x8c2622c65153eadf94749eef3bf861cd3da835095060fb993df9dced65642173. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/95c0fc48-f5e0-42c5-9ee2-69d6ffebcbe4.json and https://artists.proofprofile.net/proofs/artist/95c0fc48-f5e0-42c5-9ee2-69d6ffebcbe4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Oh la la der Calypso ist da (feat. Alfred Hause and His Orchestra) [Mono Version]
Nana Gualdi Ließt Gute Nacht Geschichten
Junge Leute brauchen Liebe (Everybody Loves A Lover)
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 0xeaad4ad2c8ec4bca33fa0c65c568dc6bf70f323b166b317375e48f92cc622397. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/DEG411297175.
Fridolin (Ich hab' sonst nichts anzuzieh'n)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07757d05bf0233e8fa8ed81f2644d197809b316fe17e556743a80eb0b2150ac5. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DEG411299605.
Masterpieces presents Nana Gualdi: Schlager Hits & Raritäten (50 Tracks)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae63e519df0cbbfde32a338a25bd695c1fc9e2ea11b14b4c7f534dfb8b04d3e7. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:00:51Z), 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/DEZ922301047.
Deutsche Schlager 1956 - 1957 (100 Evergreens HQ Mastering)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b98e97a23e9f1d1b30f91670732965afde47119693d4cd74d416b6e2b2256df. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEZ921601165.
Schlagererinnerungen - Die 50er Jahre, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdaf8bedf36bc4bef33b58504948f2cd80658cce2d8f67c5e1b550df8f52a38. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DEA541308110.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch