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 0xd8d29ab79f341a7e66c8cf178a1f130d41e703c0c555766f519699eb76293c8c. 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/b0d12943-d0f3-49cc-939e-ec135466298e.json and https://artists.proofprofile.net/proofs/artist/b0d12943-d0f3-49cc-939e-ec135466298e.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 0x7b9455aafb725b3006ea62b1a3b20e0dce7dc924df0100ebabe98118068de449. 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/22ct9dcQClKNGlPNe7jINt.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/22ct9dcQClKNGlPNe7jINt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e15e8113f6339391ffe911a54e847cb0f76f842e5a9670b5d5727ca40616167. 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/3hdtQRJaZ2FJzk0EbCfAJm.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/3hdtQRJaZ2FJzk0EbCfAJm.
{"copyright_id":"0x4b0fc9196dd67997a0cdd3fd2913cc98ab8a3c0254ae5522f91ddb24335f2a72","isrc":"USA2P2309374","name":"Sigo Caminando","registered_at":"2026-06-22T07:59:17Z","spotify_id":"2IPQdr2RHpsWVhTnnlOLOP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0fc9196dd67997a0cdd3fd2913cc98ab8a3c0254ae5522f91ddb24335f2a72. 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/2IPQdr2RHpsWVhTnnlOLOP.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/2IPQdr2RHpsWVhTnnlOLOP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e5d5b7f311a20092e0dbbe6b639448c8fd22a350299d69812bb9bd4fe0a17c. 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/40fkVhDfQfrzvC49UweJlk.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/40fkVhDfQfrzvC49UweJlk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc5a24e789f08912180ab2d5bab8aaa7296d2573101e8607baf7275761cdf35. 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/0WFbF9O6TbW9su8THqCowU.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/0WFbF9O6TbW9su8THqCowU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e5d5b7f311a20092e0dbbe6b639448c8fd22a350299d69812bb9bd4fe0a17c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1OdctQwpmJw6jl4haHFqGn.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/1OdctQwpmJw6jl4haHFqGn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc5a24e789f08912180ab2d5bab8aaa7296d2573101e8607baf7275761cdf35. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3GATk0ADnt8ru5et9OAacE.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/3GATk0ADnt8ru5et9OAacE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857cd2c7272d90a37f2416087ec866b85b1565f2174347292b98edb5e15e8851. 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/6fKIUyc5S0KoXR1hHJukf6.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/6fKIUyc5S0KoXR1hHJukf6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bede935a5ef7a1e855cb884019727eebcd9f9ae8fd837b5243b500619a0345e. 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/0gT1KJwDpUc1g36VjmJB3z.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/0gT1KJwDpUc1g36VjmJB3z.
Cuartos de Final (Dante vs. Yoiker) - Live
Octavos de Final (artil vs. Dante) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeadd8a734bfc4b8fb430252540e9772984da12d5a0a434334c08589255df3a54. 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/7pilzXoydX8Zzru5Ol1qVK.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/7pilzXoydX8Zzru5Ol1qVK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e706316f88763c649f763fcddc654a885edfb429ae838815827afffe92fb8a. 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/0KT26Fe6gAKq8GQLoC5olu.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/0KT26Fe6gAKq8GQLoC5olu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034a656838f77dc776808944cee7c6610c83f3324596d4e3943a3a93b9f4f7c1. 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/4xEEx2RKcpOul3LlBG68Rw.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/4xEEx2RKcpOul3LlBG68Rw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f23bba6b31171ec622102291d5a0e55d4a6654ed6813850d3ee7e33c8965b7. 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/2xYH9r7VyNCQ7fENL3LOWu.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/2xYH9r7VyNCQ7fENL3LOWu.