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 0xb0d7e25835bc7fa15b2a0aa61096a2900f80c80a241a21ab568775c472f026aa. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/873fdbff-9577-45be-8837-38d1d026a341.json and https://artists.proofprofile.net/proofs/artist/873fdbff-9577-45be-8837-38d1d026a341.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x37ccac16dfbf826e1246bca4b8ec6ce22628a2f499f3726251a921f0eb09cefc","isrc":"BXA5K2300023","name":"BOM TE ENCONTRAR","registered_at":"2026-06-01T15:10:35Z","spotify_id":"53CRI0JkpJywRu7tvNVWj5","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 0x37ccac16dfbf826e1246bca4b8ec6ce22628a2f499f3726251a921f0eb09cefc. 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/53CRI0JkpJywRu7tvNVWj5.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/53CRI0JkpJywRu7tvNVWj5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1080f5eace90d0cb68e94b0d02687c85708b20e9509f9f883f083efcc9f02e36. 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/3yavOAIet93Kag6H5ZeECs.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/3yavOAIet93Kag6H5ZeECs.
{"copyright_id":"0xf2405b0efa2cc6fafdc4acd63801bdb06e9d1e4a02608d68c50bdcd5c0b9591f","isrc":"BXA5K2300017","name":"3 DA MADRUGA","registered_at":"2026-06-04T16:41:18Z","spotify_id":"6ippDdJ3ys868MznfOHiRI","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2405b0efa2cc6fafdc4acd63801bdb06e9d1e4a02608d68c50bdcd5c0b9591f. 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/6ippDdJ3ys868MznfOHiRI.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/6ippDdJ3ys868MznfOHiRI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde534f32947930894d60138b34155d3c63093b4a74ece9646bed34aad20f27a. 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/0R6kmc1bAJjj5uKFhXasix.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/0R6kmc1bAJjj5uKFhXasix.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af42854025af1a7c664755db7aa491cefd0d08f7d583b9c8b8614a98d668a81. 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/6cL2kYwllJ29fyvrGMKWxE.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/6cL2kYwllJ29fyvrGMKWxE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0cd15dc8299cf7957d26de5f95e36ecc397806c7a024d6816942948f3e2409. 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/2ZIOwWa5HiQWTzOagFGdao.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/2ZIOwWa5HiQWTzOagFGdao.
{"copyright_id":"0xcd159f655ce66a0b6f79fca946ce4c0f8411c6d8afa6898c343472fc63d6ac72","isrc":"BXA5K2300019","name":"CABELO VOA","registered_at":"2026-06-06T01:37:34Z","spotify_id":"21Ut1CBOmKoNubWFRnIXxQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd159f655ce66a0b6f79fca946ce4c0f8411c6d8afa6898c343472fc63d6ac72. 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/21Ut1CBOmKoNubWFRnIXxQ.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/21Ut1CBOmKoNubWFRnIXxQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404c9502d61183d7e540e54304ae03c70e7e58da7c0d579a5bae7e24d44446ed. 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/4tue9Yl60cudcRRL7oTKjZ.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/4tue9Yl60cudcRRL7oTKjZ.
{"copyright_id":"0x843a9cb5678d7ededb99b0c0cef60f48790260628c988871d46f8811c083ecae","isrc":"BXA5K2300025","name":"CLIMA DE AMOR","registered_at":"2026-06-05T08:00:41Z","spotify_id":"7FLWAJQPXrakbBnDYtKcZy","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843a9cb5678d7ededb99b0c0cef60f48790260628c988871d46f8811c083ecae. 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/7FLWAJQPXrakbBnDYtKcZy.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/7FLWAJQPXrakbBnDYtKcZy.
{"copyright_id":"0xe1a1365f8cd46b0ac433e20059d10a5721832c146ef4ba3bde5a991de6a1006e","isrc":"BXA5K2300013","name":"DO NECTAR FREESTYLE - REMIX","registered_at":"2026-06-05T16:07:30Z","spotify_id":"4GkVbPpyx0aBoHPKe04oEZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a1365f8cd46b0ac433e20059d10a5721832c146ef4ba3bde5a991de6a1006e. 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/4GkVbPpyx0aBoHPKe04oEZ.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/4GkVbPpyx0aBoHPKe04oEZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ded9591ce4616994742d73fa215272e7359c3acb95255e875f47255ab35f245. 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/3WhX75qIWMUmQshCztywwx.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/3WhX75qIWMUmQshCztywwx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b27f585b5727467f23cd2a390ec87b61ff91a8934cc7014986756a9d22fc214. 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/0ujpjlk7XKWb50VEX5XyAl.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/0ujpjlk7XKWb50VEX5XyAl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff37c2873d753338ce34acf55655a80618dc359c56f727340a6662e5c37266a. 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/2j15gcfNgGBgfvjQXCTqhg.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/2j15gcfNgGBgfvjQXCTqhg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07287c168e4c2f34f90edfdf093cc993f9c82c9dcdd3611325728bdb3537c0d. 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/2tg68sObZBvqfuOH77fgoN.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/2tg68sObZBvqfuOH77fgoN.
{"copyright_id":"0x7e7cc5edb265587697eb0efffe112bdc22f15db3b8fb58d699eb6f910d1d5568","isrc":"BXA5K2300022","name":"DUAS ARMAS","registered_at":"2026-06-06T16:08:14Z","spotify_id":"2tvj94rUPujLFRlQDGLVoZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7cc5edb265587697eb0efffe112bdc22f15db3b8fb58d699eb6f910d1d5568. 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/2tvj94rUPujLFRlQDGLVoZ.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/2tvj94rUPujLFRlQDGLVoZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34231b8c3cda97a6a23c8c7c60f0c263f9dd3f9ea4a833f1cce7a3f6e877dab. 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/5s7GrJSUs4HgHuUK6Bzb0w.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/5s7GrJSUs4HgHuUK6Bzb0w.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8de2929a5b5b848e8296516a7e4b81cf47737b67862d5a9a807be2eb5b808b. 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/59MnzkJGkOCVODQktSCf9l.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/59MnzkJGkOCVODQktSCf9l.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135765e660997a7e3d21c413c3cf23f3786329d282052bc62f68da2720ecb523. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/19g7REr8HVUnqPY0yt5lsF.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/19g7REr8HVUnqPY0yt5lsF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7cc733b60cfab0c996873a8c94e817fdb5e2e70f5b2e9b309d57a0dbc3920c. 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/3prPhmUXMdEdXnF3JEu79E.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/3prPhmUXMdEdXnF3JEu79E.
{"copyright_id":"0x4093f0df5fd0d86d53398d6df083bcb135c3214d295eb7bae6bf24cf35cc261e","isrc":"BXA5K2200011","name":"Lugar na mesa","registered_at":"2026-06-04T10:28:34Z","spotify_id":"3CwSGsw1rxv3WsUI3X95ch","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4093f0df5fd0d86d53398d6df083bcb135c3214d295eb7bae6bf24cf35cc261e. 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/3CwSGsw1rxv3WsUI3X95ch.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/3CwSGsw1rxv3WsUI3X95ch.