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 0x8116e1512a4f80be38a99fdd5c6eb35029b9db2bf01d94aed8809ffa89426d22. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9deb46fc-94b4-4730-b3f2-6f19419cb726.json and https://artists.proofprofile.net/proofs/artist/9deb46fc-94b4-4730-b3f2-6f19419cb726.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Independent Trading Co Midweight Fleece Joggers
Cotton Heritage Premium Sweatshirt, Black
AS Colour Womens Premium Crop Top, Black
Cotton Heritage Unisex Premium Hoodie, White
Independent Trading Co Midweight Fleece Joggers, White
Bella Canvas Womens Flowy Muscle Tank, White
Bella Canvas Youth Short Sleeve T Shirt, Red
Gildan Ultra Cotton Long Sleeve T Shirt, Red
Cotton Heritage Premium Sweatshirt, Carbon Grey
All Over Print Youth Swimsuit, Black Borders
AS Colour Womens Premium Crop Top, White
All Over Print Recycled Unisex Hoodie, White
Bella Canvas Womens Flowy Muscle Tank, Black
Independent Trading Co Midweight Hoodie, Peach
Independent Trading Co Pigment Dyed Hoodie, Pigment Sandstone
Comfort Colors Garment Dyed Heavyweight T Shirt, Flower of Life
All Over Print Recycled Unisex Hoodie Elefant, Anastasia Gracheva
All Over Print Recycled Unisex Hoodie Parrot, Anastasia Gracheva
Cotton Heritage Mens Premium Heavyweight Tee, Black
Cotton Heritage Unisex Fleece Joggers, Black
All Over Print Reversible Bucket Hat, Yellow
All Over Print Reversible Bucket Hat, Black
All-Over Print Reversible Bucket Hat, White
All-Over Print Recycled Unisex Mesh Shorts, Yellow
All-Over Print Recycled Unisex Mesh Shorts, Black
All-Over Print Recycled Unisex Mesh Shorts, White
All-Over Print Recycled High Waisted Bikini Bottom, Yellow
All-Over Print Recycled High Waisted Bikini Bottom, Black