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 0x1e5fcb81866025e3bc2390dd7fdf0c2f3d173d5dfb1978055ebe39a47bd5d7e1. 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/ccf58d9f-56fb-4af3-8349-a18b8a6936e1.json and https://artists.proofprofile.net/proofs/artist/ccf58d9f-56fb-4af3-8349-a18b8a6936e1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xb1dbeaa15945fbe7f5b716c956d868b5d61969369db921f4f09c428b6edcfcaa","isrc":"ITDO81600340","name":"Iboru Iboya","registered_at":"2026-06-29T18:49:19Z","spotify_id":"0y8dom13jGmVPnOfh9pQI1","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 0xb1dbeaa15945fbe7f5b716c956d868b5d61969369db921f4f09c428b6edcfcaa. 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/0y8dom13jGmVPnOfh9pQI1.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/0y8dom13jGmVPnOfh9pQI1.
{"copyright_id":"0x702daaeb773e3c823a5cbc563295ff71372f365aa96c962369c3fe0d0efa5c93","isrc":"ITDO82200767","name":"World Stars of Salsa","registered_at":"2026-06-29T18:37:40Z","spotify_id":"0VplKVJbmBn9wUE5tOcSdO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702daaeb773e3c823a5cbc563295ff71372f365aa96c962369c3fe0d0efa5c93. 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/0VplKVJbmBn9wUE5tOcSdO.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/0VplKVJbmBn9wUE5tOcSdO.
Salsa It Compilation, Vol. 20 (Platinum Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc008c305c712815806fc46419a8a03f41361d660b106ae5c5c02ed16952d7adb. 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/5yFeGarYeLZX0JeEWW7L8q.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/5yFeGarYeLZX0JeEWW7L8q.