210px|thumb Ferdinand (von) Hiller (24 October 1811 – 11 May 1885) was a German composer, conductor, pianist, writer and music director. Biography Ferdinand Hiller was born to a wealthy Jewish family
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 0x31b06d011da9a4c1405bc6ac010cde54126c1613f213fd9d20fa6a0efbda5973. 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/452583c6-a75b-474c-8357-34364457d9bf.json and https://artists.proofprofile.net/proofs/artist/452583c6-a75b-474c-8357-34364457d9bf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hiller: Die Zerstörung Jerusalems, Op. 24
Clara Schumann: Piano Concerto & Works by Hiller, Herz & Kalkbrenner (Hyperion Romantic Piano Concerto 78)
Piano Concerto in A Minor, Op. 7: III. Finale. Allegro non troppo
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 0xbfc265d85b9647b4c9a6ab8b78536eeef31bd83e2bf3ecb02d6ddfd2d0f2893c. 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/GBAJY1924003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f46f5833fc765da8892b09a0e2d4328fa6a809657d59dd7ef1600391b41210. 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/GBAJY1924005.