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 0x6edbec902c89318b74fe28c2c326ace9eb89c998e1bd63ffaa4920e797f73608. 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/173730c7-a57a-4c16-b3c0-4269bec5673d.json and https://artists.proofprofile.net/proofs/artist/173730c7-a57a-4c16-b3c0-4269bec5673d.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 0x388561859cd02ab45d498e6649ce46abb517682ccb0c1db70ba44222f6f57cc7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5FD4AcNXnaVnt3hTQK8a9H.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/5FD4AcNXnaVnt3hTQK8a9H.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfa6d30a7cc821e6c78551584642bf88437e11c23a7d4f08384070ee91e8c83. 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/1DhLChcHy8Be7Ec6lxrTgH.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/1DhLChcHy8Be7Ec6lxrTgH.
{"copyright_id":"0x8c4793cfac553701f476413ff4553f4b63c49fbed7d28ab0e8fc335bc81d6de4","isrc":"QZW9L2351330","name":"Te Voy a Olvidar","registered_at":"2026-06-27T02:00:09Z","spotify_id":"4bhOQ58bz8o5yOhpOEckFV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4793cfac553701f476413ff4553f4b63c49fbed7d28ab0e8fc335bc81d6de4. 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/4bhOQ58bz8o5yOhpOEckFV.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/4bhOQ58bz8o5yOhpOEckFV.
{"copyright_id":"0x03969dca0ad9ddda8496bcd85d0820850f39597b4f512fb7521c4990902fcd96","isrc":"QZGLS2349695","name":"Tu Amante Tu Amigo","registered_at":"2026-06-04T12:33:29Z","spotify_id":"07FFZUzeZhjTnokrapcNwR","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03969dca0ad9ddda8496bcd85d0820850f39597b4f512fb7521c4990902fcd96. 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/07FFZUzeZhjTnokrapcNwR.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/07FFZUzeZhjTnokrapcNwR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c0ad4cc7d485192dfccd5658024eb22a17c70a475def8c2ad303d79e120b83. 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/1GpdCO3vZcM78USqQ28L0m.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/1GpdCO3vZcM78USqQ28L0m.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3135f9c0dd0f07c0374c479ac02acf89f99c8cbe80e0dce286959049cefcb982. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0Uor0Dtt1IhkpS8YqH8Q8F.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/0Uor0Dtt1IhkpS8YqH8Q8F.
{"copyright_id":"0x493c4fa56777fb454f41d8bf15960093fc2589ae0fccce7b3a6d528d3b99f63b","isrc":"GBLPF0226936","name":"Que te Enamore","registered_at":"2026-06-08T12:14:35Z","spotify_id":"6tlcsQaZmwhJjEd8cGCsMr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493c4fa56777fb454f41d8bf15960093fc2589ae0fccce7b3a6d528d3b99f63b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6tlcsQaZmwhJjEd8cGCsMr.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/6tlcsQaZmwhJjEd8cGCsMr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb579da1d78c465c4831da7d92a52dd6c7c7b110506a346215c653aecc77eef. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4dmrgNtjg0K9oreQvXAmI5.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/4dmrgNtjg0K9oreQvXAmI5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd604294a945081bf1267ec499280af31b2613f78ec5326f9794be18543efd76d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5zgsVJG1eeQdyzbPVXEcbt.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/5zgsVJG1eeQdyzbPVXEcbt.
{"copyright_id":"0xd49ed2fd97f51a6ea9bc9b0d28cd78d35cc212c9fa882efb5e7af03a473ab32e","isrc":"TCADY1877586","name":"Tun Tun","registered_at":"2026-06-08T20:14:49Z","spotify_id":"5Xhzsn8demSBBaHDSH6cou","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49ed2fd97f51a6ea9bc9b0d28cd78d35cc212c9fa882efb5e7af03a473ab32e. 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/5Xhzsn8demSBBaHDSH6cou.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/5Xhzsn8demSBBaHDSH6cou.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ea52e8cde6c0f6864518bbd844abe5e61b51f8a5dad22d67fe579e1bd27c3d. 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/7i2UxP78Z8jpp6sB4DJIdH.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/7i2UxP78Z8jpp6sB4DJIdH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f84791bd7dddf024931041ec64d7010c2d846f67a46fd5a96d2e3f4225d5649. 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/5kIh9Kzdg6ZhK2oU6KnlTz.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/5kIh9Kzdg6ZhK2oU6KnlTz.