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 0x66ea8afd22ab00d2ffec56b2e9d1c299140f031b1413b760413f433207fc57af. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/306f6150-32b8-44ec-bdc7-16d0c0379552.json and https://artists.proofprofile.net/proofs/artist/306f6150-32b8-44ec-bdc7-16d0c0379552.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xf7c6e406a2c8dfaaf9ca6a1036c9368b4b69b1dce45a5a74d9879a8be9632373","isrc":"QZWFG2395963","name":"Crazy Company","registered_at":"2026-06-29T18:28:57Z","spotify_id":"73fEGF6oYfuGzdQhVLeVHc","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 0xf7c6e406a2c8dfaaf9ca6a1036c9368b4b69b1dce45a5a74d9879a8be9632373. 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/73fEGF6oYfuGzdQhVLeVHc.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/73fEGF6oYfuGzdQhVLeVHc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767571191b6bee2d96e877c003139b59114f765c199f7766cec7e739e4096771. 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/7uoIAxv0qe7IAeAX0AgXgS.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/7uoIAxv0qe7IAeAX0AgXgS.