thumb|upright=1.25|Afterglow of the troposphere (orange), the stratosphere (blue) and the mesosphere (dark), at which atmospheric entry of objects begins, as in this case of a spacecraft reentry that
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 0xbf134475723c38e24b2ce0bf8e667945dcc7637f0771485e859c23e96cfcbbb6. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7824e274-1f22-43a2-9235-8af91e00290c.json and https://artists.proofprofile.net/proofs/artist/7824e274-1f22-43a2-9235-8af91e00290c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).