Matthias Eisenberg (born 15 January 1956) is a German concert organist and harpsichordist, and a cantor. The award-winning player is known for performing concerts with clarinetist Giora Feidman. He ha
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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad092c4cd34d819c4ebb101ddab7e9e9b4f6bb3e03aed13c999ea2c0eb17c5f. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6b577c7-ea29-44d8-9de3-c967ba296c2c.json and https://artists.proofprofile.net/proofs/artist/c6b577c7-ea29-44d8-9de3-c967ba296c2c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Great European Organs No.33: St Georgenkirche, Rotha
Great European Organs, Vol. 33: St. Georgenkirche, Rötha
Saint-Saëns: Symphony No. 3 in C Minor, Op. 78 "Organ Symphony": II. (b) Maestoso - Allegro
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0795b8932fb4dc0aea87eea155de6e1cd2a972cf448881b04ea80250e3ca1fe. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRZ119700040.
Saint-Saëns: Symphony No. 3 "Organ Symphony" & Cyprès et lauriers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0795b8932fb4dc0aea87eea155de6e1cd2a972cf448881b04ea80250e3ca1fe. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRZ119700040.