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 0x8f66dbb60cf9899bc0747bddda1e149c8ce454936d00e4d3920a51a0f293353a. 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/833d8187-287c-4cb0-86f2-644ed8cc5729.json and https://artists.proofprofile.net/proofs/artist/833d8187-287c-4cb0-86f2-644ed8cc5729.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xda0df5c834813eb6645cc50bcb8d066e86bac90ff04a877cca8380e0ce6faef4","isrc":"BXIV82443081","name":"SEXTOU BB","registered_at":"2026-06-25T21:13:39Z","spotify_id":"7n64PFlcqTfk0hCpGQGc8e","type":"track"}
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 0xda0df5c834813eb6645cc50bcb8d066e86bac90ff04a877cca8380e0ce6faef4. 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/7n64PFlcqTfk0hCpGQGc8e.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/7n64PFlcqTfk0hCpGQGc8e.
{"copyright_id":"0x523ada1e2b9ca02bce51aa705bc761c663c99a655203ddd281c9776a6835ea94","isrc":"BXIV82428888","name":"SÓ QUER BROTAR EM BAILE DE FAVELA","registered_at":"2026-06-09T08:28:53Z","spotify_id":"2cwKMLKUG86YRZHWk4u9nv","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523ada1e2b9ca02bce51aa705bc761c663c99a655203ddd281c9776a6835ea94. 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/2cwKMLKUG86YRZHWk4u9nv.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/2cwKMLKUG86YRZHWk4u9nv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e35d0f1928713239ab02b58e9bb2b5b1d138ab492f37ea2b061454373541d85. 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/79iz9K5a8CSO3qu7CvSP23.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/79iz9K5a8CSO3qu7CvSP23.
# TU VAI CER AMANTE x TA D PARABÉNS NEGUINHA
{"copyright_id":"0xf3cb7a29a66a2083daf654451758964128775d85fe06c2dc6d6e117460c4405a","isrc":"BXIV82484912","name":"# TU VAI CER AMANTE x TA D PARABÉNS NEGUINHA","registered_at":"2026-06-21T02:52:51Z","spotify_id":"02Re3klkrlQhNpnI7EijR2","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cb7a29a66a2083daf654451758964128775d85fe06c2dc6d6e117460c4405a. 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/02Re3klkrlQhNpnI7EijR2.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/02Re3klkrlQhNpnI7EijR2.
# EU SO DA PROFISSÃO PERIGO X CARRO BIXO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47352e2d4efe8f288b5640d223b020e2c408d9a21963bef728447b61844936e5. 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/2yOmrFmLJJjFuYzDnpb84o.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/2yOmrFmLJJjFuYzDnpb84o.
Eu Mete o Pé do Meu Barraco, Partiu Bailão
{"copyright_id":"0x539a539f4b6ab3dc7eda1b684fea96d05ece8058db01e232527916ca1a61c411","isrc":"BKCMX2300084","name":"Maria do Corre","registered_at":"2026-06-07T07:33:57Z","spotify_id":"2akoQ9ocq0zHhZEUw3FDHo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539a539f4b6ab3dc7eda1b684fea96d05ece8058db01e232527916ca1a61c411. 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/2akoQ9ocq0zHhZEUw3FDHo.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/2akoQ9ocq0zHhZEUw3FDHo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1853babd4697d819e54bd66e266cb325fd599e1d1481f5dca5712bcc1182b06. 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/26g5vtPbEmZZnfC6rpnSWA.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/26g5vtPbEmZZnfC6rpnSWA.
{"copyright_id":"0x3d6fab7aacb10efecebf89eb891984b593f76bb050326376faa59eb6335158c4","isrc":"BXIV82347580","name":"DEPOIS DO CORO COM COÇA","registered_at":"2026-06-09T17:40:24Z","spotify_id":"0TLETGlMYcDps1KquN8U5S","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6fab7aacb10efecebf89eb891984b593f76bb050326376faa59eb6335158c4. 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/0TLETGlMYcDps1KquN8U5S.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/0TLETGlMYcDps1KquN8U5S.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2763cafd69553a40b869f43d1c16fede0e61502383bce71faa041c06443239. 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/1t80AIyLpfOlColCY9qVc7.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/1t80AIyLpfOlColCY9qVc7.
{"copyright_id":"0x70db7eaa02940cd2d230e9cfc43c97e1046d6e0bc6d3aa589e0de2c8353da63a","isrc":"QZ5FN2593639","name":"Eu to fazendo de Puteiro","registered_at":"2026-06-22T00:59:51Z","spotify_id":"3B0CNYX8lnKTDGzDuoFkjn","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70db7eaa02940cd2d230e9cfc43c97e1046d6e0bc6d3aa589e0de2c8353da63a. 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/3B0CNYX8lnKTDGzDuoFkjn.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/3B0CNYX8lnKTDGzDuoFkjn.
{"copyright_id":"0x0f00f23cbe8cea0f109ed1a39ad8bf1ee805159c6c31d38814a7148e0fe4dbd4","isrc":"BRSVB2506440","name":"Eu Sou Pinxadão 2","registered_at":"2026-06-07T17:55:41Z","spotify_id":"3qkJUYas9lfgX1mvZXXHgD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f00f23cbe8cea0f109ed1a39ad8bf1ee805159c6c31d38814a7148e0fe4dbd4. 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/3qkJUYas9lfgX1mvZXXHgD.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/3qkJUYas9lfgX1mvZXXHgD.
{"copyright_id":"0x07e7480ab5eaa917ec1aa38da6b90c882d27ebd3d343f8949a21030b36ae96dc","isrc":"QZ5FN2494231","name":"REUNIÃO DOS SHEIK","registered_at":"2026-06-25T21:13:51Z","spotify_id":"7IoEErka8oE1m5qklHgRmq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e7480ab5eaa917ec1aa38da6b90c882d27ebd3d343f8949a21030b36ae96dc. 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/7IoEErka8oE1m5qklHgRmq.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/7IoEErka8oE1m5qklHgRmq.
{"copyright_id":"0x07e7480ab5eaa917ec1aa38da6b90c882d27ebd3d343f8949a21030b36ae96dc","isrc":"QZ5FN2494231","name":"REUNIÃO DOS SHEIK","registered_at":"2026-06-25T21:13:51Z","spotify_id":"7BFmmFknQJwfOBqHSxLcvs","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e7480ab5eaa917ec1aa38da6b90c882d27ebd3d343f8949a21030b36ae96dc. 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/7BFmmFknQJwfOBqHSxLcvs.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/7BFmmFknQJwfOBqHSxLcvs.