Water Planet is a Polish television channel owned by Polcast Television, which broadcasts programmes about sea and tourism. It was launched on May 14, 2012 and replaced CSB TV. Category:Television ch
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 0xa8eb34cac8b09f27b320ae55c998668d24318ca8d6a2f842d467e3f702c2e50d. Chain 2 (Bitcoin): anchored in block 954729 (2026-06-21T18:16:07Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb8eb4c6-06b4-4abd-aabd-a95586743198.json and https://artists.proofprofile.net/proofs/artist/fb8eb4c6-06b4-4abd-aabd-a95586743198.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).