thumb|300px|Hauer's birthplace in Wiener Neustadt thumb|300px|Josef Matthias Hauer's "athematic" dodecaphony in Nomos Op. 19Whittall 2008, 26.() Josef Matthias Hauer (March 19, 1883 – September 22, 1
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 0x2acae231a3a60903418ac687032031839e4692dd26f05087ba4fc471d3a76d74. Chain 2 (Bitcoin): anchored in block 954043 (2026-06-17T04:15:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3dc84481-a06f-43b0-bf9e-686094367598.json and https://artists.proofprofile.net/proofs/artist/3dc84481-a06f-43b0-bf9e-686094367598.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Klavierstücke mit Überschriften nach Worten von Friedrich Hölderlin, Op. 25: VIII. Wo die Meerluft die heißen Ufer kühlt und den Lorbeerwald druchsäuselt
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 0x22258c9bb84d13dd0c13c5fe6d04f8c7ceed7fa65782c3e85997abc333ec8054. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEC449602945.
Hauer: Violin Concerto, Apokalyptische Phantasie & Romantische Phantasie
Hauer: Music with Hölderlin & Piano Pieces, Op. 25