Piotr Damasiewicz (born 11 April 1980), also known as Damaś, is a Polish composer, vocalist and multi-instrumentalist. His instruments include the trumpet, double bass and piano. He studied music in W
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 0xb41519d7d048fd99e9cd75c91d4f65948872c342db9a61276543abbec5767712. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ded6860-2c58-4b03-8c4e-4e1a6d5c15c8.json and https://artists.proofprofile.net/proofs/artist/9ded6860-2c58-4b03-8c4e-4e1a6d5c15c8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).