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 0x7c4bc6d460a64d23fb19204b3116799367a92ae9ff27bd02f584e4a42f49fbc4. 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/3834b699-3e86-41d3-a8d2-6244cc1df221.json and https://artists.proofprofile.net/proofs/artist/3834b699-3e86-41d3-a8d2-6244cc1df221.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Piano Recital: Margulis, Jura - Gluck, C.W. / Bach, J.S. / Liszt, F. / Caplet, A. / Wagner, R. / Rachmaninov, S. (Piano Transcriptions)
Orfeo ed Euridice: Melody (arr. G. Sgambati)
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 0xf31bb712ade06ed7c4c12ee58e40beaeacd468c58cb4510067fc7f2808366b46. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEU920554501.
12 Lieder von Schubert, S558/R243: No. 2. Auf dem Wasser zu singen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7a98171645dfeaac068f6408ce20cbc76ae8fbb20c430a6fa557daca536799. 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/DEU920554504.
Schubert - Schwanengesang, S560/R245: No. 12. Der Doppelganger
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda9fb05e785e842afdcbe32435af4d4ccbcadcfbc9b448cd3bdefd56099aec4. 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/DEU920554505.
Tale of Tsar Saltan, Op. 57 (arr. S. Rachmaninov): Rimsky-Korsakov - Flight of the Bumble Bee
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de5716ad64bde74bf11415ee5128456a0061a0305d3f2e787ba9d01711ad7af. 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/DEU920554511.
Piano Recital: Margulis, Jura - Berg, A. / Brahms, J. / Beethoven, L. Van / Bach, J.S.
Piano Recital I - Schumann - Chopin - Rachmaninov - Liszt - Saint Saens- Moskowsky
Fantasy Pieces, Op. 12: Des Abends (The Evening)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70befb1af8fa8abeed661a11d98bb18e633c66affbd002c264abbe946c4398d6. 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/SEWDL0708601.