1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x72630b79993866f829c56baeaafd90bf8696a9cdd5a185a533d6259910aecd47. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0dee693d-aa4b-40c6-8f07-aae529776823.json and https://artists.proofprofile.net/proofs/artist/0dee693d-aa4b-40c6-8f07-aae529776823.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xd65992a9cc1644db92f7b0906a134f7f0dc57ae42715e50704571a9dee8a981b","isrc":"BRZ9C2000527","name":"Cecília e os Balões","registered_at":"2026-06-29T21:23:43Z","spotify_id":"4AZaCa38zyknIMFGkvFpLL","type":"track"}
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65992a9cc1644db92f7b0906a134f7f0dc57ae42715e50704571a9dee8a981b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4AZaCa38zyknIMFGkvFpLL.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4AZaCa38zyknIMFGkvFpLL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076c394a6431ba1f3297bd0ec209a50843855f13a5ca7553db6fc59db0909568. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/31BVVHnFpwMrILC9TolqZk.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/31BVVHnFpwMrILC9TolqZk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfb022b75d01bffa2a73922d3ca83be23eebae9340b00b5be3fc4b7ed729183. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1krMkr1cmSXcEvduGfcFj8.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1krMkr1cmSXcEvduGfcFj8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076c394a6431ba1f3297bd0ec209a50843855f13a5ca7553db6fc59db0909568. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2sN6ivH3yvAacSL8J6i8RZ.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2sN6ivH3yvAacSL8J6i8RZ.