Max Rudolf may refer to: Max Rudolf (conductor) (1902–1995), German conductor Max Rudolf (rower) (born 1891), Swiss rower
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 0x3b350b2a13e0dafbeab7402c9832334d428cd5892edc41624d69f2aaee87b6e3. 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/661e1dfd-2b88-43ff-aaaa-ae745b5f2679.json and https://artists.proofprofile.net/proofs/artist/661e1dfd-2b88-43ff-aaaa-ae745b5f2679.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mozart: Le Nozze di Figaro (The Marriage of Figaro), K. 492
Operas and Operettas - Donizetti, G. / Lehar, F. / Kalman, E. / Boito, A. / Puccini, G. / Bellini, V. / Mozart, W.A. (Festival of the Primadonnas)
Mozart: Don Giovanni, K. 527 (Recorded 1954)