Hans Peter Blochwitz (born 28 September 1949) is a German lyric tenor known internationally for his performance in opera and concert, particularly in Mozart roles. Career Born in Garmisch-Partenkir
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 0xf45629715cb947ceff7a6fa43e43d967b7a0ccb957cb73a4be9d1fbb84903be7. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/994154bc-f614-4a2c-8e42-e481f6939aaa.json and https://artists.proofprofile.net/proofs/artist/994154bc-f614-4a2c-8e42-e481f6939aaa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mozart: Don Giovanni, K. 527, Act 1: "Dalla sua pace" (Don Ottavio)
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 0x2481ad105cbaea653b6071f77d84e95b2e8aafe9f51a5e5a61d616efcf52ea8c. 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/DEA808800126.
Beethoven: Missa solemnis in D Major, Op. 123: Agnus Dei
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12fe3999ce9d13a67ef9d6ab38d8f513d686715b4405f901913017935da4580d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBAYC8901156.
Missa in tempore belli "Paukenmesse", Hob. XXII:9 in C: Kyrie
Mozart: Mass in C K317 "Coronation Mass" / Haydn: Missa in tempore belli
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ee3a69093a55045693681993009f179b43b5b4519b2151b78b0892050d8257. 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/DEF059103261.
Missa in tempore belli "Paukenmesse", Hob. XXII:9 in C: Gloria: Gloria in excelsis Deo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd56e2103f178ff9a652d4e2cf13d73c30def462003d79c59e2b2ba9a95fc03. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:48:54Z), 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/DEF059103262.