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 0x81f74731d8270a17d8e13121169f7f92c711d70a00757490a47741cf5c915b11. 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/f50ad677-64d0-4661-a3fc-38b548da6fb9.json and https://artists.proofprofile.net/proofs/artist/f50ad677-64d0-4661-a3fc-38b548da6fb9.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 0xef49e863b78730f353027786c348f4d388424c57bcad5e6bb806738672313968. 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/1HLCb8ypJnU3Dn0d7pB7jl.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/1HLCb8ypJnU3Dn0d7pB7jl.
O Meu Olho Brilha - Incidental: Mais Perto Quero Estar
{"copyright_id":"0x8de0d2263dd1ba60842281d604a13be3123c036b6cdffb54fbeae3db5f7bd054","isrc":"BRMKP1800021","name":"Ele Vem","registered_at":"2026-06-29T05:17:16Z","spotify_id":"3KykRMQPiLbBn7jNUytXwj","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de0d2263dd1ba60842281d604a13be3123c036b6cdffb54fbeae3db5f7bd054. 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/3KykRMQPiLbBn7jNUytXwj.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/3KykRMQPiLbBn7jNUytXwj.
O Meu Olho Brilha - Incidental: Mais Perto Quero Estar (Playback)
{"copyright_id":"0x6baa8f17fecc46920ffb1412b743a2cfc7ba45e8a2d3e5f3f431fa349aeb36fc","isrc":"BRMKP1801951","name":"É Diferente (Live Session)","registered_at":"2026-06-29T15:39:04Z","spotify_id":"5hqLZPOsjkpx1sSSw0NHZ0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6baa8f17fecc46920ffb1412b743a2cfc7ba45e8a2d3e5f3f431fa349aeb36fc. 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/5hqLZPOsjkpx1sSSw0NHZ0.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/5hqLZPOsjkpx1sSSw0NHZ0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d107a774005f4228a3fd04f473b535c68971fa1847e8d6b1d720fc12c2dc655. 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/1dFJqdMVfL7SP8LgS3MRgT.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/1dFJqdMVfL7SP8LgS3MRgT.
Medley (Manassés Eu Faço Parte dos 7 Mil Se Renovarão)
{"copyright_id":"0xd387e9a8143fc30e591f58c5122e6015bd25ae0571b7aadd707c3503b9a229da","isrc":"BRMKP2400051","name":"Só Quem Tem Raiz (Ao Vivo)","registered_at":"2026-06-29T15:37:32Z","spotify_id":"79f7lMHr0zvYPUBcl8AHtz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd387e9a8143fc30e591f58c5122e6015bd25ae0571b7aadd707c3503b9a229da. 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/79f7lMHr0zvYPUBcl8AHtz.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/79f7lMHr0zvYPUBcl8AHtz.
{"copyright_id":"0x51c424ff3ed6b58e64df148bd9ca7a5b7b92ee601f60f0f9ecf852bec9c8040a","isrc":"BRMKP2400052","name":"Sobrevivi (Ao Vivo)","registered_at":"2026-06-29T15:40:05Z","spotify_id":"5ToZcNM2iFsAVP5aZpMbgW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c424ff3ed6b58e64df148bd9ca7a5b7b92ee601f60f0f9ecf852bec9c8040a. 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/5ToZcNM2iFsAVP5aZpMbgW.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/5ToZcNM2iFsAVP5aZpMbgW.