De Speld is a Dutch news satire website. The website publishes satirical articles and videos parodying the style and content of regular news outlets. De Speld was founded in 2007 by Jochem van den Ber
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 0xe71d5429ef1af042a8e177a25d47c50ae8757e9a0eae65a84f6341013d714a28. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2ac2334-7c5f-4e4d-b19a-14478adfa472.json and https://artists.proofprofile.net/proofs/artist/a2ac2334-7c5f-4e4d-b19a-14478adfa472.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).