Ågren is a Swedish family name. Some people with these surname include: Björn Ågren (born 1979), Swedish guitarist Erik Ågren (boxer) (1916–1985), Swedish boxer Erik Ågren (writer) (1924–2008), F
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 0xdd2a2238fea1888cfea79e23a6aa316e2d21eea93790267344720ec795c9b4bd. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63a49c4e-591b-4d87-8865-d4058a2fba40.json and https://artists.proofprofile.net/proofs/artist/63a49c4e-591b-4d87-8865-d4058a2fba40.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).