Walter Solek or Walt Solek (September 28, 1910 – April 1, 2005) was a Polish-American lyricist, musician, performer, and radio show host who introduced English-language lyrics into polka music in the
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 0x3047b6d8e7c3e4c54366134e4a1d12af9c528c426c5e03432182bca1b6f191f3. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/81eab26c-07ed-46e1-895d-cf2f946a358d.json and https://artists.proofprofile.net/proofs/artist/81eab26c-07ed-46e1-895d-cf2f946a358d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).