Sara Johansson (born 23 January 1980) is a female footballer for Hammarby IF and the Swedish national team. Honours Club Djurgården/Älvsjö Damallsvenskan (2): 2003, 2004 Footnotes References
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 0x777bd188c0726c7d63fbfe8f12335ad6ce8706092cc5a963287759113f751cf5. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ce968d1-6e91-4b4d-936b-197445c347f5.json and https://artists.proofprofile.net/proofs/artist/8ce968d1-6e91-4b4d-936b-197445c347f5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).