Henri Pulkkinen (born 26 February 1986), professionally known as Paperi T, is a Finnish rapper, poet and radio host. He started his career in the group Ruger Hauer in 2010 and released his first solo
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 0x9bb9c7a38c71f52fe376c48e68b72a9c7b61647163249a15cfc5a24f787dc50a. 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/6f026982-7117-4d69-8140-c42638d318d8.json and https://artists.proofprofile.net/proofs/artist/6f026982-7117-4d69-8140-c42638d318d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).