Bengt Axel Mattias Bylund (born 16 June 1970) is a Swedish musician, music arranger and music producer who lives in Gothenburg. In 2016 he received a Grammy Award for string arrangement on Taylor Swif
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 0x8968a90d6e0ba79d825676604dbd134d04e0ec75eee82639529e67f5a1f1f3ef. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/98e902dd-27e0-41de-8371-cdef09c539cb.json and https://artists.proofprofile.net/proofs/artist/98e902dd-27e0-41de-8371-cdef09c539cb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).