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 0x4800dcf3ba3cced9fafc9745706b0cc0cc1af85632a9a17071eca18c203a5e68. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0cecccb5-3dff-481b-b7d0-48c9157d84ff.json and https://artists.proofprofile.net/proofs/artist/0cecccb5-3dff-481b-b7d0-48c9157d84ff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x201541c978bde02d86d5d3edec1ea8bdf4cb1c0d4acfc914a4ffcebafe93c654","isrc":"FR6V80136316","name":"Ndolo 2","registered_at":"2026-06-29T17:03:52Z","spotify_id":"79EeaYg99HOAd1MowHsRrV","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 0x201541c978bde02d86d5d3edec1ea8bdf4cb1c0d4acfc914a4ffcebafe93c654. 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/79EeaYg99HOAd1MowHsRrV.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/79EeaYg99HOAd1MowHsRrV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe983277a62a92ee02551dc397c589672dc06ba1754efc0c43ab2ea98e99ae1. 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/1KWZeKl22iM1pKMpVM9Z7r.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/1KWZeKl22iM1pKMpVM9Z7r.