Nelly Markova Rangelova (born 1958) is a Bulgarian pop singer from the town of Montana. Biography Nelly Rangelova was born in Mihaylovgrad (now Montana) on September 15, 1958. She began her creativ
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 0x7346c12df94bc6371de64184467b64e16fb3fa06bf69456a01c08443000ea16d. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/36d5853f-5b7f-493b-8537-66971958a633.json and https://artists.proofprofile.net/proofs/artist/36d5853f-5b7f-493b-8537-66971958a633.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).