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 0x920e9722cc3800d770866b8d8bfcdf3eb708720eb5004f96c3ee3cc8cad1865a. 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/6e390968-8cb2-4981-90e0-e8b64ee44ee4.json and https://artists.proofprofile.net/proofs/artist/6e390968-8cb2-4981-90e0-e8b64ee44ee4.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 0x0a32bde32441e937e2731b4b356f413e1388351c78ea634990a2afe969e45192. 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/1jtbrkfIiong9pVxSmAEWK.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/1jtbrkfIiong9pVxSmAEWK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfe98647cfec6ce6a701a08d6af71329a64ba25a855f08999df434657c4a4f2. 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/62L2vkeqgUlmy2cufVheAC.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/62L2vkeqgUlmy2cufVheAC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfe98647cfec6ce6a701a08d6af71329a64ba25a855f08999df434657c4a4f2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2DUzD536Rz5v9HUzFZZfC5.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/2DUzD536Rz5v9HUzFZZfC5.
Hits São João 2024 - As Melhores Do Forró E Do Sertanejo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a32bde32441e937e2731b4b356f413e1388351c78ea634990a2afe969e45192. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1Krpuv7kLEAkzt9pRQcGbn.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/1Krpuv7kLEAkzt9pRQcGbn.
São João 2024 - Músicas Oficiais Pra Sua Festa
São João 2024 - As Melhores Pro Seu Arraiá
{"copyright_id":"0x840389ac8bad35c11b1ab2230cd10fcda02b8b5453f94eca01421711210842b8","isrc":"PTBM11300103","name":"A Outra (feat. Matias Damasio)","registered_at":"2026-06-06T16:48:22Z","spotify_id":"4QRUHIP58hLYHmGvzy5oPP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840389ac8bad35c11b1ab2230cd10fcda02b8b5453f94eca01421711210842b8. 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/4QRUHIP58hLYHmGvzy5oPP.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/4QRUHIP58hLYHmGvzy5oPP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840389ac8bad35c11b1ab2230cd10fcda02b8b5453f94eca01421711210842b8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4a4xzSA255CUYV9B5HKGj3.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/4a4xzSA255CUYV9B5HKGj3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b04799f4219c53a7a088b2f54c1b4583da9725dabe7958f675265375bbc0c3. 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/2sy8Av4WVYdCBqLQ7E8Eat.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/2sy8Av4WVYdCBqLQ7E8Eat.
Leva-Me a Viajar - Associação Sara Carreira Version
{"copyright_id":"0x119be498ba97cb49fb7450f2d7145bbdee1de8569f4c4023727e3e3efa9904e3","isrc":"PT6HD2100036","name":"Leva-Me a Viajar - Associação Sara Carreira Version","registered_at":"2026-06-04T12:47:19Z","spotify_id":"1XTH7xK2H0Jj31cJCAdWYy","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119be498ba97cb49fb7450f2d7145bbdee1de8569f4c4023727e3e3efa9904e3. 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/1XTH7xK2H0Jj31cJCAdWYy.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/1XTH7xK2H0Jj31cJCAdWYy.
Leva-Me a Viajar (Associação Sara Carreira Version)
{"copyright_id":"0x119be498ba97cb49fb7450f2d7145bbdee1de8569f4c4023727e3e3efa9904e3","isrc":"PT6HD2100036","name":"Leva-Me a Viajar - Associação Sara Carreira Version","registered_at":"2026-06-04T12:47:19Z","spotify_id":"4UA4dXMeTYhOlbmgQa7Q55","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119be498ba97cb49fb7450f2d7145bbdee1de8569f4c4023727e3e3efa9904e3. 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/4UA4dXMeTYhOlbmgQa7Q55.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/4UA4dXMeTYhOlbmgQa7Q55.
Mi Amor (feat. Gerilson Insrael & Matias Damasio)
{"copyright_id":"0x01a1cfbf45cb28c5f540abac95e2e302c56d3a2ccfcb15b65e305c43c32a76fb","isrc":"ZA41S2304716","name":"Mi Amor (feat. Gerilson Insrael & Matias Damasio)","registered_at":"2026-06-07T11:02:21Z","spotify_id":"0mjWx6WJ5bIfGcF7iI3qDC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a1cfbf45cb28c5f540abac95e2e302c56d3a2ccfcb15b65e305c43c32a76fb. 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/0mjWx6WJ5bIfGcF7iI3qDC.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/0mjWx6WJ5bIfGcF7iI3qDC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b72383140e90b1805c898ab47e50cd359695333f0af844b4773ad007aecaf09. 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/2zRx3wB6IsmodDGtOj6atz.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/2zRx3wB6IsmodDGtOj6atz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c93d1228c96bc5f1b6863ec4e1f77f7f10b327b6a2202b8121ad77603141b7a. 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/3pXyAh3uYKEehDa6EcHRI8.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/3pXyAh3uYKEehDa6EcHRI8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5992bfd7bc69598d3626db9697e752c1c587f5f85c78ce648a4d803bf8d6f6d2. 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/0Eo2ipZrrRTLwNPGForbK8.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/0Eo2ipZrrRTLwNPGForbK8.