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 0x357c88c30f9d6954fa668e091712087d3ca376275d046552fcf45761baf82a71. 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/78ec69b5-7115-4de4-9e5e-f84116eb5da3.json and https://artists.proofprofile.net/proofs/artist/78ec69b5-7115-4de4-9e5e-f84116eb5da3.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 0x9d1bf1226e3e6effda76ae055451c832b7ef613689bcd977c9b6793b0b7d7bf4. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/04M7JJrO9MAn4EGKH6uOSs.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/04M7JJrO9MAn4EGKH6uOSs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2749a8ca5bd1dee0fc8b41c71fac9bdb469513c535153e71991392bed93fe074. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2snbsO8duGzipXGx1QqQID.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/2snbsO8duGzipXGx1QqQID.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584d63bfd213589f7c606bd64c766641f0193abb4d6cc1022617d3fbba212812. 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/5dMa6ayR89bElxSntVT2uF.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/5dMa6ayR89bElxSntVT2uF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bdc13fbef611c01927425b6ced3ba67301332b5ba2b1a8d32b9c449f21e835. 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/0wOT9Qu4T8b8C3TtPski1Z.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/0wOT9Qu4T8b8C3TtPski1Z.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8c73a4ca3dd8d7683cb950333a9a845c7d63f6480f4e6372500c1af246f521. 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/19QioGIhv4F2cPBi3MFGOl.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/19QioGIhv4F2cPBi3MFGOl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358880dc252247517a71901bb4651bdcf684ec289c6a8d4546742fd86d4a5bc9. 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/6TNAa3jrdEj4xWhgYnCliK.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/6TNAa3jrdEj4xWhgYnCliK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1bf1226e3e6effda76ae055451c832b7ef613689bcd977c9b6793b0b7d7bf4. 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/0KzG92lbZwFF7xq8DpbDoB.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/0KzG92lbZwFF7xq8DpbDoB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2749a8ca5bd1dee0fc8b41c71fac9bdb469513c535153e71991392bed93fe074. 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/3Hqq7nqhTLfsIJRlmBocJW.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/3Hqq7nqhTLfsIJRlmBocJW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0dd702f037c05e1b93397af73509054b8a26e2b503aa4b304865e4c7c445f3. 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/2tIi2EmA42BwftFjuV6u1X.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/2tIi2EmA42BwftFjuV6u1X.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f1ac6afd3f775eb405113d6041a87284d1bb90ba4fd7833662c495cbe4fb1b. 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/6CjLWAw4Z1invMKBOtRDe4.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/6CjLWAw4Z1invMKBOtRDe4.
Menina dos Olhos Azuis - Piers Faccini Remix
No Meu Pais - Mario Caldato & Joey Altura remix
Sambinha - Saulo Duarte & Klaus Senna remix
{"copyright_id":"0x911c84204786b09ad1f4488969ef8e3d740f6bf1f718419eabe06598eae80415","isrc":"US6DR1401923","name":"Batuque - Gabriel Muzak remix","registered_at":"2026-06-26T22:02:10Z","spotify_id":"4zVjgCpPy30mpSqe9vIIYH","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911c84204786b09ad1f4488969ef8e3d740f6bf1f718419eabe06598eae80415. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4zVjgCpPy30mpSqe9vIIYH.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/4zVjgCpPy30mpSqe9vIIYH.
{"copyright_id":"0xdc738b006ed6a38635090f7ab53ae3eb9629c5a7cfef0b804ffc9d6f6a94f606","isrc":"US6DR1401917","name":"Menina dos Olhos Azuis - Piers Faccini Remix","registered_at":"2026-06-21T00:39:12Z","spotify_id":"2v7Yak7V5WZO9ocpEafSXo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc738b006ed6a38635090f7ab53ae3eb9629c5a7cfef0b804ffc9d6f6a94f606. 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/2v7Yak7V5WZO9ocpEafSXo.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/2v7Yak7V5WZO9ocpEafSXo.
{"copyright_id":"0x83b5ebb5792b627e9c76abf17fa54ab14582108a802ffba391b0c16dca922b58","isrc":"US6DR1401920","name":"Batuque - Jeremy Sole & Atropolis remix","registered_at":"2026-06-04T12:36:43Z","spotify_id":"09cKPn1VZWYH4AbY6dAw5G","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b5ebb5792b627e9c76abf17fa54ab14582108a802ffba391b0c16dca922b58. 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/09cKPn1VZWYH4AbY6dAw5G.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/09cKPn1VZWYH4AbY6dAw5G.
{"copyright_id":"0x5a2588c7a91a2aa7f8b6960ee5bbb91bd58a2e5ae86301374b43ef958d47389a","isrc":"US6DR1401921","name":"No Meu Pais - Mario Caldato & Joey Altura remix","registered_at":"2026-06-26T22:02:51Z","spotify_id":"7EInfXg6IDgPbaCNC1BhGX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2588c7a91a2aa7f8b6960ee5bbb91bd58a2e5ae86301374b43ef958d47389a. 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/7EInfXg6IDgPbaCNC1BhGX.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/7EInfXg6IDgPbaCNC1BhGX.
{"copyright_id":"0x911c84204786b09ad1f4488969ef8e3d740f6bf1f718419eabe06598eae80415","isrc":"US6DR1401923","name":"Batuque - Gabriel Muzak remix","registered_at":"2026-06-26T22:02:10Z","spotify_id":"6menXLyyF2fEjbHNYuTnhp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911c84204786b09ad1f4488969ef8e3d740f6bf1f718419eabe06598eae80415. 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/6menXLyyF2fEjbHNYuTnhp.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/6menXLyyF2fEjbHNYuTnhp.
Menina Dos Olhos Azuis - Piers Faccini Remix
No Meu Pais - Mario Caldato and Joey Altruda Remix
Sambinha - Saulo Duarte & Klaus Senna Remix
Menina Dos Olhos Azuis (Piers Faccini Remix)
No Meu Pais (Mario Caldato & Joey Altruda Remix)
Sambinha (Saulo Duarte & Klaus Senna Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212c7b8783247b494036a1771ed4d154e5309f5cafa8eb2633b238746d5f4091. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1LfkefzZN9JyP2F05a1ixf.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/1LfkefzZN9JyP2F05a1ixf.
{"copyright_id":"0x5fc7d5dfe00e9e9dbea752ecaa394b7f2b2cd161c428b62207b35d9a417f6bcf","isrc":"US6DR1602192","name":"Les Vieux","registered_at":"2026-06-29T10:13:10Z","spotify_id":"49gW7NLZsNJlDmBR0SWWDk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc7d5dfe00e9e9dbea752ecaa394b7f2b2cd161c428b62207b35d9a417f6bcf. 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/49gW7NLZsNJlDmBR0SWWDk.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/49gW7NLZsNJlDmBR0SWWDk.
{"copyright_id":"0xe28a7bc4d899075ca78cd4a0fcc7a041e485d42ff6e27dc29924fcef44ea37fb","isrc":"US6DR2102722","name":"Moreno - El Búho Remix","registered_at":"2026-06-23T11:48:11Z","spotify_id":"63DQWxIfcTUNgdV3k5XSOJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28a7bc4d899075ca78cd4a0fcc7a041e485d42ff6e27dc29924fcef44ea37fb. 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/63DQWxIfcTUNgdV3k5XSOJ.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/63DQWxIfcTUNgdV3k5XSOJ.
LA VIE DE MA MÈRE (Bande originale du film)
{"copyright_id":"0xe28a7bc4d899075ca78cd4a0fcc7a041e485d42ff6e27dc29924fcef44ea37fb","isrc":"US6DR2102722","name":"Moreno - El Búho Remix","registered_at":"2026-06-23T11:48:11Z","spotify_id":"1iQxMOXUI00hKpZZzuwV6j","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28a7bc4d899075ca78cd4a0fcc7a041e485d42ff6e27dc29924fcef44ea37fb. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1iQxMOXUI00hKpZZzuwV6j.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/1iQxMOXUI00hKpZZzuwV6j.
{"copyright_id":"0x6b0a0a2d59bf2e8cdcfcd73d1dfff68c32a691db64ea1c3bf96babfcce59628f","isrc":"US6DR1401983","name":"Juste une Chanson","registered_at":"2026-06-11T03:11:28Z","spotify_id":"0kgSKR32KRqsT6qGAJq1mQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0a0a2d59bf2e8cdcfcd73d1dfff68c32a691db64ea1c3bf96babfcce59628f. 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/0kgSKR32KRqsT6qGAJq1mQ.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/0kgSKR32KRqsT6qGAJq1mQ.
{"copyright_id":"0xdc738b006ed6a38635090f7ab53ae3eb9629c5a7cfef0b804ffc9d6f6a94f606","isrc":"US6DR1401917","name":"Menina Dos Olhos Azuis (Piers Faccini Remix)","registered_at":"2026-06-21T00:39:12Z","spotify_id":"7jPiFLPT1DSa3noXXJgBvi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc738b006ed6a38635090f7ab53ae3eb9629c5a7cfef0b804ffc9d6f6a94f606. 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/7jPiFLPT1DSa3noXXJgBvi.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/7jPiFLPT1DSa3noXXJgBvi.
{"copyright_id":"0xbc5ddd1815d32b1f69fd1ee71af7c8fac476e66a65d3ff1218783cdbacf87ed2","isrc":"UK26N1300026","name":"Morena Do Mar","registered_at":"2026-06-24T11:28:58Z","spotify_id":"7ttKkBE2RN5k40oH2AK81f","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5ddd1815d32b1f69fd1ee71af7c8fac476e66a65d3ff1218783cdbacf87ed2. 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/7ttKkBE2RN5k40oH2AK81f.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/7ttKkBE2RN5k40oH2AK81f.