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 0x7e333a1435046f1a1ddb39d6f17c50d4d9d234eecdd72534f1da246719de7284. 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/001b87cd-7476-461a-acd4-44f481279e54.json and https://artists.proofprofile.net/proofs/artist/001b87cd-7476-461a-acd4-44f481279e54.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xf885fc2c6ac9ca425ae000f5187b6e39ff2be616f8e3cc35ca3dbe9799aa3131. 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/2gVvPHJ6Rf59VntdQipXUw.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/2gVvPHJ6Rf59VntdQipXUw.
{"copyright_id":"0x631480bf298fa1bbe0a6af363e631a6a6f71b9d1a4488df437ecd9298d94a82c","isrc":"SEVSZ1302601","name":"Varje ögonblick","registered_at":"2026-06-20T05:28:54Z","spotify_id":"7xzYfEneAYrJFRnLb91H5E","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631480bf298fa1bbe0a6af363e631a6a6f71b9d1a4488df437ecd9298d94a82c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7xzYfEneAYrJFRnLb91H5E.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/7xzYfEneAYrJFRnLb91H5E.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf885fc2c6ac9ca425ae000f5187b6e39ff2be616f8e3cc35ca3dbe9799aa3131. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5Jhb5qtOuWW8KEA7tPABLe.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/5Jhb5qtOuWW8KEA7tPABLe.