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 0x031d3642ebb0a12455d212c9b9c8ee73b4f759a8f382ec49d74cc6e782c3c14c. 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/03b427d8-b1d7-4990-a0e0-f8585f5a1bc0.json and https://artists.proofprofile.net/proofs/artist/03b427d8-b1d7-4990-a0e0-f8585f5a1bc0.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 0x0f865c0b080d2ea7bf9f575faed4c071dd47951ead173646ca47365f57ed3892. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0fC2aMSZoV72t5vhhwHocY.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/0fC2aMSZoV72t5vhhwHocY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71060d521fc80ca1d6a964d49b26c9a5d1a18794c10fa104ed8255eebffb8743. 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/5gqsx2xuOtY20Hg4U8rV8x.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/5gqsx2xuOtY20Hg4U8rV8x.
{"copyright_id":"0xae9f189f16ff5b5ccfdf68d50382e840046ad2d22c5dcb3bbbe0f3bf4fa18f6e","isrc":"BRUM72400519","name":"Escolhi Te Esquecer","registered_at":"2026-06-29T00:32:02Z","spotify_id":"5MumqbjIsCLCrnS5AflCQ8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9f189f16ff5b5ccfdf68d50382e840046ad2d22c5dcb3bbbe0f3bf4fa18f6e. 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/5MumqbjIsCLCrnS5AflCQ8.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/5MumqbjIsCLCrnS5AflCQ8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f865c0b080d2ea7bf9f575faed4c071dd47951ead173646ca47365f57ed3892. 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/25e9RgDeBwwlQP42LFkaJg.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/25e9RgDeBwwlQP42LFkaJg.
{"copyright_id":"0x26edf1c43e04c71acf3c6bbc01b745e50e4a15364a340e8cf2c2391bdb04a481","isrc":"BKNOT2400013","name":"Tô Bem - Acústico","registered_at":"2026-06-29T08:17:19Z","spotify_id":"1P4k6czbfkITuirF8bYqDj","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26edf1c43e04c71acf3c6bbc01b745e50e4a15364a340e8cf2c2391bdb04a481. 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/1P4k6czbfkITuirF8bYqDj.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/1P4k6czbfkITuirF8bYqDj.
A Gente Gosta Assim (Acústico) (Clipe Oficial)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5634996748dd257e58b0639386af57a7f871448e20ed54d8fbdd3ee29e4f81bf. 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/3K1zJ6PGT6tek5bjEkqq4h.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/3K1zJ6PGT6tek5bjEkqq4h.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262df3a9a582f05c5ded33391eee987cde51991269272484ec4c2ed22431f67a. 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/3AD9nSFeLi0ED3uc0lgdiQ.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/3AD9nSFeLi0ED3uc0lgdiQ.
{"copyright_id":"0x26edf1c43e04c71acf3c6bbc01b745e50e4a15364a340e8cf2c2391bdb04a481","isrc":"BKNOT2400013","name":"Tô Bem - Acústico","registered_at":"2026-06-29T08:17:19Z","spotify_id":"0ty70j8dqs9aKJuVidRvYD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26edf1c43e04c71acf3c6bbc01b745e50e4a15364a340e8cf2c2391bdb04a481. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0ty70j8dqs9aKJuVidRvYD.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/0ty70j8dqs9aKJuVidRvYD.
{"copyright_id":"0x543fe182eb669a45a1e0d0da682cc6b76efffda72394fd209105baa22492b0de","isrc":"BXTMX2000060","name":"Te Aprender","registered_at":"2026-06-08T19:23:41Z","spotify_id":"41oFWADy3ZBVGipHkl8vKA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543fe182eb669a45a1e0d0da682cc6b76efffda72394fd209105baa22492b0de. 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/41oFWADy3ZBVGipHkl8vKA.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/41oFWADy3ZBVGipHkl8vKA.