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 0x4b9cedefcac16fa2f743446a24c754fc6ab425306bd92d730d3cb8d585555e43. 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/a5e29ccf-3c58-436c-ba23-078dc2609e28.json and https://artists.proofprofile.net/proofs/artist/a5e29ccf-3c58-436c-ba23-078dc2609e28.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pout Pourri Xotes / No Meu Pé de Serra / Capim Novo
Pout Pourri Estrada de Canindé / Forro de Mane Vito
Carência / Anjo Malandrinho / Carinhar Meu Coração
É Madrugada / Brincadeira na Fogueira / Naquele São João
Aproveita Gente / É De Dar Água na Boca / Olha Pro Céu
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 0xc3a37d443c02abdc80af5b6f7cd25e6ac94ca6020a23e3f43ab85c92dac6c291. 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/4lhtm72aQ2tLDdhl1tuxFt.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/4lhtm72aQ2tLDdhl1tuxFt.
{"copyright_id":"0x911ba0d2b36afbb21b0c6969b75b64fd6c4270dc4d2163af5f3fe020f1c72b19","isrc":"BRNPD0300014","name":"Lisbela - Bonus Track","registered_at":"2026-06-10T16:15:35Z","spotify_id":"46KksfPfJStXZxa8X6Ani4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911ba0d2b36afbb21b0c6969b75b64fd6c4270dc4d2163af5f3fe020f1c72b19. 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/46KksfPfJStXZxa8X6Ani4.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/46KksfPfJStXZxa8X6Ani4.