thumb|250px|Golf ball on tee placed in the ground A tee is a stand used in sport to support and elevate a stationary ball prior to striking with a foot, club, or bat. Tees are used extensively in golf
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 0xea1d614ceb1bdc9e9b6985327530940549700e8ff5f5b64d1438e91528cb4825. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d7e895e4-5d27-4f27-8aa7-2a9544e95f1f.json and https://artists.proofprofile.net/proofs/artist/d7e895e4-5d27-4f27-8aa7-2a9544e95f1f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).