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 0xd5c21ed57d1c0c71b7268d02e0c2a4ef009b440f64646cb36be76fc4c2164936. 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/44b102d2-89f9-4f19-bbd5-39018d084812.json and https://artists.proofprofile.net/proofs/artist/44b102d2-89f9-4f19-bbd5-39018d084812.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 0xd4594f660f9d3fc9d5dcff17c6b02d9f65df39e8064b0e434854f14d8e3b0286. 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/1w1e2z62gdzvNaQECWKPNw.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/1w1e2z62gdzvNaQECWKPNw.
Abre Caminho / Ponto de Abertura de Reinado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efdea72712d57d90048a512cea73482ccb96836b627a75ee3e89074303a1f10. 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/32NCte1vswEfgRbgInsQHS.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/32NCte1vswEfgRbgInsQHS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23726dc63c6fda65bfdb7c786f2649c307317e38b968964f519198293d5764a9. 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/2K2zlypzMsuS5ZkrmMypV7.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/2K2zlypzMsuS5ZkrmMypV7.
{"copyright_id":"0x1cf5d98e843c1b6ee0d287d7d406d7e66a58be8e5dfdcd7d6301adb6803225dc","isrc":"BRJ051900061","name":"Avô Manoel","registered_at":"2026-06-27T17:26:26Z","spotify_id":"5nZJvkFvREzj02xQHD2Xm9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf5d98e843c1b6ee0d287d7d406d7e66a58be8e5dfdcd7d6301adb6803225dc. 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/5nZJvkFvREzj02xQHD2Xm9.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/5nZJvkFvREzj02xQHD2Xm9.
{"copyright_id":"0xd13f54b4ccc8df7e6fd40747d07bf0a93ae9367edeef3b86ea1bfef802fb67b8","isrc":"BRJ051900070","name":"Coração de Marujo","registered_at":"2026-06-09T21:08:47Z","spotify_id":"7qT7IJBA1Pwem5msfdI1CH","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13f54b4ccc8df7e6fd40747d07bf0a93ae9367edeef3b86ea1bfef802fb67b8. 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/7qT7IJBA1Pwem5msfdI1CH.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/7qT7IJBA1Pwem5msfdI1CH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9155793529ffd770e53842633c514d90946de726cf922ecf49d0dadf419ffd58. 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/2cwO5jVZXq9GN5GI3WYllA.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/2cwO5jVZXq9GN5GI3WYllA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd040b6316947eab2c85ffa340a0df738700aa59670d4fef6135d20709005ed37. 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/1gY11TRbKpZdJUfTrjaxX4.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/1gY11TRbKpZdJUfTrjaxX4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3dbf0dc538029d92f8861f312775780a36fd26f82678073cc90d1d3c9167bb2. 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/4mtRPiaYORGqffCVc2oxFj.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/4mtRPiaYORGqffCVc2oxFj.
{"copyright_id":"0x4f0eb3aeebaee3e6ca6abf14807dc7b5a353856ffb223500a810f98622521a5c","isrc":"BRJ052000012","name":"Oração do Perdão","registered_at":"2026-06-06T06:34:29Z","spotify_id":"2AStI6RmfohK2zMLLINmdA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0eb3aeebaee3e6ca6abf14807dc7b5a353856ffb223500a810f98622521a5c. 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/2AStI6RmfohK2zMLLINmdA.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/2AStI6RmfohK2zMLLINmdA.
{"copyright_id":"0x0427a3d0de0099fc473e8d3b9e702d239abda4014c4d693fc7a17712790697df","isrc":"BRJ052000013","name":"Refazendo a Costura","registered_at":"2026-06-08T06:06:44Z","spotify_id":"3KkAeDLXkiFmGScpGkbsMc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0427a3d0de0099fc473e8d3b9e702d239abda4014c4d693fc7a17712790697df. 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/3KkAeDLXkiFmGScpGkbsMc.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/3KkAeDLXkiFmGScpGkbsMc.
{"copyright_id":"0x221edcbebe79ebfa285fe777c7fdf1ef4f6d67d13e666465e44a075127cd4f3b","isrc":"BRJ052000016","name":"Meu Jardim","registered_at":"2026-06-08T23:36:53Z","spotify_id":"4Fw0sAupisoUwO5Zor8Hls","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221edcbebe79ebfa285fe777c7fdf1ef4f6d67d13e666465e44a075127cd4f3b. 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/4Fw0sAupisoUwO5Zor8Hls.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/4Fw0sAupisoUwO5Zor8Hls.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cabb13495d54d9be1deb4685e1195a04ba9d48b5490d2c891f2d56592267cad. 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/4PxJyY9z5oA7oZ2LpD8UvQ.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/4PxJyY9z5oA7oZ2LpD8UvQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5df5d5cd5b7afab4f37b24a5b19a02893a34f6f1154365730d99556814e88d6. 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/5LGLWiQSRUc4B0CjjYkY1p.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/5LGLWiQSRUc4B0CjjYkY1p.
{"copyright_id":"0xcb7d82efc0bf9bafe369b265244ae8c1b1587e8370e3a3389ccd553c710486b5","isrc":"BRJ052000021","name":"Herança de Vovô","registered_at":"2026-06-26T01:04:35Z","spotify_id":"1m2dafS1MDNz3ivgxXVIJE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7d82efc0bf9bafe369b265244ae8c1b1587e8370e3a3389ccd553c710486b5. 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/1m2dafS1MDNz3ivgxXVIJE.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/1m2dafS1MDNz3ivgxXVIJE.
Pequena Memória para um Tempo Sem Memória
Mauricio Tizumba e Sérgio Pererê - ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda2b1a75e72055a019e88a19de50b7fff6f75d4081a447754da3d6ad3462d14. 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/0Y13aajyGTbhJj1mB5QQkH.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/0Y13aajyGTbhJj1mB5QQkH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787ec42d62c0b2314963945156dcc19e22d69f4c2726a20bb4928d1a54dc2040. 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/1HJ2mkzQg2elWgTnSqFMvK.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/1HJ2mkzQg2elWgTnSqFMvK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9beba60b766b1036ea28451da5c6302783d9c5928ece8c3d031d24995bffa217. 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/5SOJ1rnYEJZDkriMrYd1So.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/5SOJ1rnYEJZDkriMrYd1So.
{"copyright_id":"0x8b6557ec8e2a81bdf719240867a36d031baff5c73d87a285a62dd4abe498bfa9","isrc":"BRSOS1500006","name":"João e José","registered_at":"2026-06-27T14:26:45Z","spotify_id":"4RVMd8d7ekevXgqyeG3qtl","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6557ec8e2a81bdf719240867a36d031baff5c73d87a285a62dd4abe498bfa9. 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/4RVMd8d7ekevXgqyeG3qtl.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/4RVMd8d7ekevXgqyeG3qtl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb9d1ce55703e53190d438226fcb7abf8c54455b5e249fa05ae091575c57e92. 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/3oBj0qZgIxaxdFLSTNnsul.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/3oBj0qZgIxaxdFLSTNnsul.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efdea72712d57d90048a512cea73482ccb96836b627a75ee3e89074303a1f10. 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/2i3VeINaoiNBwDHgZntBgU.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/2i3VeINaoiNBwDHgZntBgU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3dbf0dc538029d92f8861f312775780a36fd26f82678073cc90d1d3c9167bb2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2PUGLeInaSK1aZhOB3M4OE.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/2PUGLeInaSK1aZhOB3M4OE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ce7e8fd8276774c5624848afca1737cdf64bf8d3c460d156b5450e8f05952c. 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/39heV9cbMfou2BZ4RQQ4BT.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/39heV9cbMfou2BZ4RQQ4BT.