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 0x8c6caa487e998fcf9c94180ff5eeed8ac3fdeebe20ad03e33ee4be68423dd860. 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/cb67ea50-6522-4128-962f-045d1fd8c0f3.json and https://artists.proofprofile.net/proofs/artist/cb67ea50-6522-4128-962f-045d1fd8c0f3.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 0x01912d26f2e48abee512378ee69b2c1017354b5a77d7415b884ea1db958b207b. 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/1gGTXX0KleGUJfWlNucjte.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/1gGTXX0KleGUJfWlNucjte.
{"copyright_id":"0xf7441deebe19c7e88c240fba0dc9e1cf277caadd2003f208df2922cf0ae90318","isrc":"BCX6W2500039","name":"É Carnaval, Carnaval","registered_at":"2026-06-27T03:02:31Z","spotify_id":"10Ic6ecqSH9vzc7uvuXgb1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7441deebe19c7e88c240fba0dc9e1cf277caadd2003f208df2922cf0ae90318. 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/10Ic6ecqSH9vzc7uvuXgb1.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/10Ic6ecqSH9vzc7uvuXgb1.
{"copyright_id":"0x5792a4ab9fd8b058ce59e87e1b0eadb8b4d75f2a1479261c55f7a168d3df7ce0","isrc":"BRBV22500001","name":"Vem pra Escolinha","registered_at":"2026-06-25T23:21:27Z","spotify_id":"2V1tOCZgispNEz9VWi2KSt","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5792a4ab9fd8b058ce59e87e1b0eadb8b4d75f2a1479261c55f7a168d3df7ce0. 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/2V1tOCZgispNEz9VWi2KSt.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/2V1tOCZgispNEz9VWi2KSt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59aca7f272f21062b6d2ba0dfdb3508d9cc19218737b08bbe0d3a8203ee64253. 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/3SHhZz9Wxvg72kgM9xwump.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/3SHhZz9Wxvg72kgM9xwump.
{"copyright_id":"0x034b8f302d092a7bb1daa0e6c1fc63421417aba9f6891d94041cff6ecd4617aa","isrc":"BKOMB2400006","name":"Super Homem ou Tubarão","registered_at":"2026-06-25T21:14:45Z","spotify_id":"0aBBYufazGOaBUCdZ2PME5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034b8f302d092a7bb1daa0e6c1fc63421417aba9f6891d94041cff6ecd4617aa. 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/0aBBYufazGOaBUCdZ2PME5.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/0aBBYufazGOaBUCdZ2PME5.
Castelar Belford Roxo Nova Moda e o Jetta Novo
{"copyright_id":"0xda8d4718de4a7f82cdeb371d259f90cf67820b9b70706ca624daac7cd8f2bb40","isrc":"BRBV22300005","name":"Professor Convocou Tu Não Pode Faltar","registered_at":"2026-06-18T16:21:59Z","spotify_id":"0K57N4iGM9tXeKnrt9yFIf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8d4718de4a7f82cdeb371d259f90cf67820b9b70706ca624daac7cd8f2bb40. 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/0K57N4iGM9tXeKnrt9yFIf.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/0K57N4iGM9tXeKnrt9yFIf.
{"copyright_id":"0xdc09a2376657a8cc2f9a5dfc4180bb948dd71669ed4ce008559b4d10a090da2c","isrc":"BKOMB2300001","name":"Joga pro Corola Vs Lá na Treta do Pl","registered_at":"2026-06-08T11:02:19Z","spotify_id":"3KsoidokoWlGrV9gKOOTDs","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc09a2376657a8cc2f9a5dfc4180bb948dd71669ed4ce008559b4d10a090da2c. 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/3KsoidokoWlGrV9gKOOTDs.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/3KsoidokoWlGrV9gKOOTDs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a394cef44a69a22b9b87946a2281a93da05352ba312ffe0142e087138d4b534. 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/10VDTsE4oIzrA8gUY8ijZB.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/10VDTsE4oIzrA8gUY8ijZB.
Cristal (feat. LAÏOUNG, Mc Copinho, Sueth, Sobs)
{"copyright_id":"0x942ca7ba67ee3e1e9f5c30f4d2d2af2de03a3028caf561362479029ec67018ee","isrc":"BKNNO2200031","name":"Cristal (feat. LAÏOUNG, Mc Copinho, Sueth, Sobs)","registered_at":"2026-06-22T19:53:38Z","spotify_id":"4KgOKyV9HZBiCBFs4teeSh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942ca7ba67ee3e1e9f5c30f4d2d2af2de03a3028caf561362479029ec67018ee. 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/4KgOKyV9HZBiCBFs4teeSh.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/4KgOKyV9HZBiCBFs4teeSh.
Empinadinha / De Cabeça pra Baixo - Ao Vivo
{"copyright_id":"0x234ace11bae40da6114308f163e207fb3f42ce0a5d5fcc380f9389fc655f7466","isrc":"BRFUP0800072","name":"Solta Esse Ponto - Ao Vivo","registered_at":"2026-06-10T02:11:28Z","spotify_id":"240KAOYyt04piL4iRFHfQl","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234ace11bae40da6114308f163e207fb3f42ce0a5d5fcc380f9389fc655f7466. 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/240KAOYyt04piL4iRFHfQl.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/240KAOYyt04piL4iRFHfQl.