thumb|200px|H. Meyer: Freidorf Dwelling Estate in Muttenz, Switzerland Hans Emil "Hannes" Meyer (18 November 1889 – 19 July 1954) was a Swiss architect and second director of the Bauhaus Dessau from
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 0x94c0583e05ac5a52fe0d5d4cbbe5b08ff23778877b49a86df9cf8d5e9f164a06. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/abdb4d1a-864a-48a6-92ef-6a6ab29da60f.json and https://artists.proofprofile.net/proofs/artist/abdb4d1a-864a-48a6-92ef-6a6ab29da60f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Spiel Orgel Spiel : Classical and Folk Music for Organ
Spiel Orgel Spiel : Classical and Popular Music Transcribed for Organ
Organ Recital: Meyer, Hannes - Sousa, J.P. / Meyer, H. / Liszt, F. / Lennon, J. / Mccartney, P. / Strauss Ii / Petersburski, J. / Ravel, M.
Hannes Meyer im Orgelkonzert - 35 Jahre Bergkirchlikonzerte Arosa (2002)