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 0x673472e61ea295083e23f50e1a2a0c052a923d56e33e7aef571ec2d90e83af22. Chain 2 (Bitcoin): anchored in block 954502 (2026-06-20T05:07:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c2dd602-3393-48d8-961c-d76a4499209d.json and https://artists.proofprofile.net/proofs/artist/9c2dd602-3393-48d8-961c-d76a4499209d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Man müsste Klavier spielen können” – Die schönsten Melodien von Friedrich Schröder in Originalaufnahmen (1937-1943)
Immer nur … Du!: Man musste Klavier spielen konnen
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 0xfbe8f7aa90f9099a780ed8a269571c5cef94ecac37f19cec0774821cbc4ccb0b. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEL111300097.
The Golden Era of the German Dance Orchestra: Michael Jary Chamber Dance Orchestra, Vol. 2 (1940-1943)
"Musik am Abend” – Die schönstenOriginalaufnahmen (1934 – 1954)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610c54c377e546ac05972a15ab9a9b2d0308937db4a0d354895b556511a7ed36. 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/DEL111300151.
Schellack Schätze: Treasures on 78 RPM from Berlin, Europe and the World, Vol. 7
The Golden Era of the German Dance Orchestra: Michael Jary Chamber Dance Orchestra, Vol. 1 (1939-1941)
Karneval der Liebe: Haben Sie schon mal im Dunkeln gekusst?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420dd6ec74d6379a7a983099ebba094236c802724aa47468fa8ebf8706150dcb. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USB8U1003025.
“Musik hat mich verliebt gemacht” und andere Gerhard Winkler-Hits (Vol. 2) im Originalsound 1935 bis 1941