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 0xf2e4225ebd18799fc1a70ff7d2bf63ffa3fe4d63a2a983185906e6f6f5f3ce0f. 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/fa968491-f8c0-41d2-9275-47bc15674796.json and https://artists.proofprofile.net/proofs/artist/fa968491-f8c0-41d2-9275-47bc15674796.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 0x78c624d88d7e11b85b1d90b098342330621095c425f012771d5d3c09f994d5f8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4wDcA05hce8nLJlCAUBe5Q.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/4wDcA05hce8nLJlCAUBe5Q.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95ded24c70609179240a9874a5e6d58f0e3135788812031feb6b4586a1d32ab. 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/6K735r51K8ihLrKgqF0Buk.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/6K735r51K8ihLrKgqF0Buk.
{"copyright_id":"0xdaa6f75fe1a5cf91c084f0fdc4736ac6feda93a618bb9d1ce3b87ef181da49d0","isrc":"QZNJV2560669","name":"Que Mulher É Essa","registered_at":"2026-06-28T06:11:52Z","spotify_id":"55KlzRTkEB4ajquEojMICE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa6f75fe1a5cf91c084f0fdc4736ac6feda93a618bb9d1ce3b87ef181da49d0. 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/55KlzRTkEB4ajquEojMICE.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/55KlzRTkEB4ajquEojMICE.
{"copyright_id":"0x71a5fbd8fe48ecca1a1fa4416f42fac35e38f72575bc74a56f26e77069019e40","isrc":"QZMZ92505947","name":"Labios Divididos - Cover","registered_at":"2026-06-21T17:44:17Z","spotify_id":"3fmUHycNeooMsVXSeH51OO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a5fbd8fe48ecca1a1fa4416f42fac35e38f72575bc74a56f26e77069019e40. 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/3fmUHycNeooMsVXSeH51OO.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/3fmUHycNeooMsVXSeH51OO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f06c15ef2dfd1742fc3d5578bc82d2ac7729b6547808470bd33a2631c68be73. 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/38yNbyRQB3A0AeVLweZEa0.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/38yNbyRQB3A0AeVLweZEa0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20bd9cdebef542b26924602767274172920670beaa8e39b6c29562e677aa52c0. 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/1ykkKNMvXjGax8tm78orYL.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/1ykkKNMvXjGax8tm78orYL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3ee6bd76d12a949a812143c0f87323053434e0fcef49ed6d180f30c6c8767b. 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/0u3P2b0u9uQL5rtaVXjdW2.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/0u3P2b0u9uQL5rtaVXjdW2.
{"copyright_id":"0x6d097a37c62abeab81576a982238b2adaad28e2676cb3edcf5704b873335abc4","isrc":"BXKG22402010","name":"Coisa de Cinema","registered_at":"2026-06-09T08:41:54Z","spotify_id":"6Etm49xuLp5bLNcgKkLEWw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d097a37c62abeab81576a982238b2adaad28e2676cb3edcf5704b873335abc4. 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/6Etm49xuLp5bLNcgKkLEWw.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/6Etm49xuLp5bLNcgKkLEWw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325797decc86f4873a659f81913614617239c1aa3552d02bd8a529974f6f6f01. 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/4NXXeruSKprCE6Rw39Q7DB.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/4NXXeruSKprCE6Rw39Q7DB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7f7e9f02ded70b443d9923370878839f6080fadfad980e56882230a658a7f6. 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/45bOWKVWZTBhN9v2IfcZZk.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/45bOWKVWZTBhN9v2IfcZZk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac7fa1fdbbe53095ac7e72ffa5025d340c9ce8d3953b1ae6c63a64e966e8621. 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/3NOBuoxFbziLkDEHw198wz.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/3NOBuoxFbziLkDEHw198wz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66429b662dce1e330e87191a4b94a3c28a4b8c9ac5579e5ef29d40b63779696f. 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/23vKyRgU4u2f3lN3KXBLek.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/23vKyRgU4u2f3lN3KXBLek.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a40a6713327e9ed8bb3fb7fc4462cba4aa4b0b1857a2e9b10b556610a359074. 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/5Mqt87tc3U8zazARDH8pMH.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/5Mqt87tc3U8zazARDH8pMH.
{"copyright_id":"0xd107271365c59f6b2af9ecbf89e5eef25f0e780bd41392653db98bed60f0b130","isrc":"BXKG22402020","name":"Homem Não Chora","registered_at":"2026-06-11T10:33:17Z","spotify_id":"2YvpysXBvvBmkyCH5Ngu34","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd107271365c59f6b2af9ecbf89e5eef25f0e780bd41392653db98bed60f0b130. 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/2YvpysXBvvBmkyCH5Ngu34.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/2YvpysXBvvBmkyCH5Ngu34.
{"copyright_id":"0xfba14cc56268ce24460d0bdd2a28e680d1c5fe0e9e01ea2a19eba92021de4940","isrc":"BXKG22402015","name":"Meu Perfume","registered_at":"2026-06-05T17:01:48Z","spotify_id":"0sXYh9No3q5RnSSRi1yIaA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba14cc56268ce24460d0bdd2a28e680d1c5fe0e9e01ea2a19eba92021de4940. 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/0sXYh9No3q5RnSSRi1yIaA.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/0sXYh9No3q5RnSSRi1yIaA.
{"copyright_id":"0xf173cd43c4ebf066dcf298c3a7090a7b17b6c8621e141261b4a906b2a87cd745","isrc":"BXKG22402016","name":"Olha o Que Cê Fez Comigo","registered_at":"2026-06-10T04:14:09Z","spotify_id":"6mRJrCE0tUQHFwTgkHnAFP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf173cd43c4ebf066dcf298c3a7090a7b17b6c8621e141261b4a906b2a87cd745. 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/6mRJrCE0tUQHFwTgkHnAFP.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/6mRJrCE0tUQHFwTgkHnAFP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c957aafde59b9b570030a1e65a7665a0731e320481b8caa69e3be33851def1c. 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/5m5XUvZ2OZt0FwPdUTIZ8t.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/5m5XUvZ2OZt0FwPdUTIZ8t.
{"copyright_id":"0xc98379ded55f81d08444bfb0392fd8e18fbae1c071fc140d470c365ce0cbeaee","isrc":"QZMZ92556217","name":"Meu Perfume","registered_at":"2026-06-28T06:13:31Z","spotify_id":"5IWL8mve7LduKxsFFTqZc4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98379ded55f81d08444bfb0392fd8e18fbae1c071fc140d470c365ce0cbeaee. 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/5IWL8mve7LduKxsFFTqZc4.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/5IWL8mve7LduKxsFFTqZc4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd041f026de6a521573874c281137bd2f6ef007fb62643db08fb87ef381372204. 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/2R9ox4we8QNM2UjkfTgjoH.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/2R9ox4we8QNM2UjkfTgjoH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da84cc9ec2ea1b1318414654c177521ebaf28f554e818030f2d52346d26c94e. 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/287C6zFysq3m5mIZAqeU7j.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/287C6zFysq3m5mIZAqeU7j.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7365262ab19555c88ebd272f920470b36a64fec47ee89a1a8b3fbf225420651f. 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/0uDuvJF7LO1W8OgvA6YBMc.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/0uDuvJF7LO1W8OgvA6YBMc.
{"copyright_id":"0xda0b35f8583e5e4c48c0cfda2079ef665f2e34763e5ce3c59d6b34b54b6908ef","isrc":"BXKG22500024","name":"Comprei uma Cabrita","registered_at":"2026-06-21T02:52:33Z","spotify_id":"13Royz6lhRBSKEf4ivy0x7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0b35f8583e5e4c48c0cfda2079ef665f2e34763e5ce3c59d6b34b54b6908ef. 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/13Royz6lhRBSKEf4ivy0x7.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/13Royz6lhRBSKEf4ivy0x7.
Seresta do Cara Sinistro Especial Aracaju, Vol. 1
{"copyright_id":"0x3a0af76c74fa674135aba1ad4c1390e8e4e74eff35a37baf1c77f67869910f73","isrc":"BXKG22402947","name":"Mais uma pra Eu Beber","registered_at":"2026-06-20T06:21:30Z","spotify_id":"1Z8NZuBHBGMxAGzPq38pkU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0af76c74fa674135aba1ad4c1390e8e4e74eff35a37baf1c77f67869910f73. 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/1Z8NZuBHBGMxAGzPq38pkU.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/1Z8NZuBHBGMxAGzPq38pkU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbccf30d0abe860be200682af5f8fc66f65d12071a82f1705d684a9559e8715a0. 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/435vU34gNzjkwEPYf18DrT.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/435vU34gNzjkwEPYf18DrT.
{"copyright_id":"0x27965e62794c1af9b072ae81f10eccc17aaa6ef29f12a93163cfa9c64e06717b","isrc":"BKDFK2400263","name":"Melhores Amigos","registered_at":"2026-06-07T07:34:07Z","spotify_id":"1nvScb4wtzDQMqKHZFiN7f","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27965e62794c1af9b072ae81f10eccc17aaa6ef29f12a93163cfa9c64e06717b. 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/1nvScb4wtzDQMqKHZFiN7f.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/1nvScb4wtzDQMqKHZFiN7f.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d59c7095c4b3b74d5b25d493a9637d1e47e2334d2813bf8bedc3e679f5f49ae. 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/4q1f5xSskQd0VlpkGzuGwU.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/4q1f5xSskQd0VlpkGzuGwU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0adfe97325e172b292dc881a68ed645d2d0774a3666e7de6c88b03fe94864912. 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/6GhF0aknX9zrhC4kQcQQdJ.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/6GhF0aknX9zrhC4kQcQQdJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2836db167896b219d547fcf521885fbf81c1a2823256d4d6e35ca0314de3da2a. 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/1pgssmie66x4nCvcNe1wn1.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/1pgssmie66x4nCvcNe1wn1.