Miisa-Leena Päällysaho (19 February 1970 – 7 July 2016), better known as Miisa, was a Finnish Eurodance artist who released two albums in the 1990s. Her first single was released in Finland in 1991 a
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 0x898cfdf27914510655a1359e158b2cb3d47ee1acbe57954e15c96d4b7fb2b3e3. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fcaf290a-c3fc-4d7a-b655-4862076a27a8.json and https://artists.proofprofile.net/proofs/artist/fcaf290a-c3fc-4d7a-b655-4862076a27a8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).