Sagas are prose stories and histories, composed in Iceland and to a lesser extent elsewhere in Scandinavia. The most famous saga-genre is the sagas of Icelanders, which feature Viking voyages, migrat
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 0xd2b56e68ad9127c70362b4ca98ec86ed68d50d58091cef4d0b07ea3c3369c157. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/da352590-1151-498e-91a6-a2cdc0f0460d.json and https://artists.proofprofile.net/proofs/artist/da352590-1151-498e-91a6-a2cdc0f0460d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).