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 0x12260aca27f5fceb7bc87980b94ca5405d01ed71b56445f24bd85ae96b18301e. 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/0aceafcb-8ae2-47ea-b267-5d4bc656ad0a.json and https://artists.proofprofile.net/proofs/artist/0aceafcb-8ae2-47ea-b267-5d4bc656ad0a.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 0x33d63f6ca81c5ed104a642562c9d49371882251f0a1ad649e983e5839fa0d5d5. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0XDLuZiVYiKsXJZLCmsdJl.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/0XDLuZiVYiKsXJZLCmsdJl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242f19808e08be21c3160a321da6c9dd9a0af3521476fedbf48a7f0fdd4d3aa1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2RMhR41eLfvu5lyoGHLxet.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/2RMhR41eLfvu5lyoGHLxet.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f04270a4523682f365aa781561d98e5305a4d5354a098d8142ef3a514fafbe6. 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/5cGr1rTlqRdyuDYS2s4r6E.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/5cGr1rTlqRdyuDYS2s4r6E.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a65ab7229165d1f3c88e530662c0e0508c18c0cb0c19e5d1a84174599a882f. 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/77lWWOdSTHF59gWwFGWdql.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/77lWWOdSTHF59gWwFGWdql.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5003505c68609dab4fd8de581a06057cf92be1d5b0751cce2093765fdacb69. 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/6qIRdT8tC83TOWhF12eD6w.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/6qIRdT8tC83TOWhF12eD6w.
{"copyright_id":"0xd14d76fad148d267e925eb99c3a8cfc3dcda0f28e607659346113cef03f33a42","isrc":"TCAGH2223353","name":"Imagine That","registered_at":"2026-06-21T09:52:55Z","spotify_id":"1Z0gygsEXKVpM865qGQbMq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14d76fad148d267e925eb99c3a8cfc3dcda0f28e607659346113cef03f33a42. 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/1Z0gygsEXKVpM865qGQbMq.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/1Z0gygsEXKVpM865qGQbMq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d63f6ca81c5ed104a642562c9d49371882251f0a1ad649e983e5839fa0d5d5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0l5reJz5pXuf7ASCRD2byw.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/0l5reJz5pXuf7ASCRD2byw.