upright=1.00|thumb|Dante Alighieri (c. 1265–1321) Year 1301 (MCCCI) was a common year starting on Sunday of the Julian calendar. Events January– March January 14 – With the death of King Andrew I
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 0x05c355b3683b3c962f84dc617fd26b1d30015f43c166063af18cdd36786c7504. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea97df09-451f-4b0a-8d50-e9b4ae465ee9.json and https://artists.proofprofile.net/proofs/artist/ea97df09-451f-4b0a-8d50-e9b4ae465ee9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).