Marsel is a given name. Notable people with the name include: Marsel Çaka (born 1995), Albanian footballer Marsel Efroimski (born 1995), Israeli chess player Marsel Ibragimov (born 1997), Russian pro
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 0x039345b7efaf4e72b175d26454d869f2fd7d6159d60782b48c08a05e7b55dc81. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06ff31ec-3b12-4390-a1d6-9309e2520b5d.json and https://artists.proofprofile.net/proofs/artist/06ff31ec-3b12-4390-a1d6-9309e2520b5d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).