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 0x1c9fcf29883ea20be126bea5283ba0a8135847fd7c1505e7a89316f417465241. 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/3b3c6e5c-7ba1-4f25-8d94-eb455f24ae5c.json and https://artists.proofprofile.net/proofs/artist/3b3c6e5c-7ba1-4f25-8d94-eb455f24ae5c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xc7b2e604c17dfa5fac37680a1f69af6012263a5be436978af4cecba319a9af2d","isrc":"QZTAT2277972","name":"Supra Riddim","registered_at":"2026-06-18T04:29:29Z","spotify_id":"1W3fELKlQfOOFi9gOBi9pK","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 0xc7b2e604c17dfa5fac37680a1f69af6012263a5be436978af4cecba319a9af2d. 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/1W3fELKlQfOOFi9gOBi9pK.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/1W3fELKlQfOOFi9gOBi9pK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2f0f5c6b4d578b3c31ad9d97cfc7a7fd61b30f1360e06da067a905c7023f9d. 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/3DU3N0yCDja3Ogd74XyK0l.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/3DU3N0yCDja3Ogd74XyK0l.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc4e980e2bf8be7bd843dcbeffcefaf8a9c73494ccbdf1fd68443deb8cdee53. 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/1WKPOwUyULXQQffIvhtzCj.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/1WKPOwUyULXQQffIvhtzCj.
{"copyright_id":"0xa4e508e360cc3810bffded74eaa80cdc3393603c94f28da4eb8d036edaba455f","isrc":"QZTAT2277977","name":"Likkle bit","registered_at":"2026-06-18T19:46:51Z","spotify_id":"13KS2fpyJ8CBEjFGB7JGmZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e508e360cc3810bffded74eaa80cdc3393603c94f28da4eb8d036edaba455f. 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/13KS2fpyJ8CBEjFGB7JGmZ.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/13KS2fpyJ8CBEjFGB7JGmZ.