Andrzej Stanisław Blumenfeld (12 August 1951 – 14 August 2017) was a Polish film, television, and voice actor who worked for SDI Media Polska. Filmography The Young Magician (1987) - Teacher Legend
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 0x775a56664c791efe60f1ae036185a0f0ea98746ce1ab1f247ee6ef06725fb7d6. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1be62fb2-578d-4154-92ed-3c12bd42d718.json and https://artists.proofprofile.net/proofs/artist/1be62fb2-578d-4154-92ed-3c12bd42d718.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).