Kimmo Sakari Blom (31 January 1970 – 25 August 2022) was a Finnish singer and stage artist, known for his work in several rock and metal bands such as Urban Tale, Boys of the Band, and Heartplay. From
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f41a27f1e1cdbb031779286bb934a4cfbf244c72dd8100821ecdf16216195e2. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c870764-02f1-4959-b6e2-c13124fc68ad.json and https://artists.proofprofile.net/proofs/artist/2c870764-02f1-4959-b6e2-c13124fc68ad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).