Plazma (previously known as Slow Motion) is a Russian pop band consisting of Roman Chernitsyn (vocals, lyrics, music) and Maxim Postelniy (background vocals, keyboards, music and arrangements). The b
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 0x591d717fcb2d7e9047df94a6017832a61fedc97365811408c0982b3b21be7092. Chain 2 (Bitcoin): anchored in block 953970 (2026-06-16T16:09:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2a1a41e6-0c5e-400e-863c-f3fe5b018193.json and https://artists.proofprofile.net/proofs/artist/2a1a41e6-0c5e-400e-863c-f3fe5b018193.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).