Pavel Fischer (born 26 August 1965) is a Czech politician and diplomat who has been Senator from Prague 12 since 2018. Fischer previously served as Czech Ambassador to France from 2003 to 2010. He was
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 0x2e3479b499f3c09dc614407ae0ad15f589a0c8c0960b732fcc9bcea441510122. 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/616574f7-d809-473d-831e-6fcb0882e5e3.json and https://artists.proofprofile.net/proofs/artist/616574f7-d809-473d-831e-6fcb0882e5e3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Moravian Folk Poetry in Songs, JW V/2: No. 2, Steadiness
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 0x4d2c775e42a8bbd7a029edfe26963c6ea8939e86dc87ea305f9c5ec15b7c6451. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CZA160405873.
Moravian Folk Poetry in Songs, JW V/2: No. 6, Gnats Wedding
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f1668d980a8c78eb39c144dbe9740f275fef1403382250ac2c3fae6b64bad4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CZA160405877.
Moravian Folk Poetry in Songs, JW V/2: No. 14, Alderman's Daughter
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cda141dd49cf3f16ec893b7c51649b4d4cce42955679b6a7965ee4e18dcb35d. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/CZA160405885.