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 0x7f6bff4590519161360b15b6087bca28bbc52a1e89e7885e6b232ba23a4271fc. 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/8aced163-1989-48bb-b0de-6db89d735454.json and https://artists.proofprofile.net/proofs/artist/8aced163-1989-48bb-b0de-6db89d735454.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 0x010e692d6ff3a71fc490f0f3238041a9b0971621272af71c7bba55fd3c22d3ea. 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/3lHbWlLDhRlioOVEEwYu8x.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/3lHbWlLDhRlioOVEEwYu8x.
{"copyright_id":"0x9cbbf33988337d1a25d1803795fd03065c2f50fcf98057f7c1f78da145ce137e","isrc":"BXG6R2400595","name":"Penelope Charmosa","registered_at":"2026-06-04T07:00:13Z","spotify_id":"1lrQGpy2cvebNmleWUntNU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbbf33988337d1a25d1803795fd03065c2f50fcf98057f7c1f78da145ce137e. 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/1lrQGpy2cvebNmleWUntNU.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/1lrQGpy2cvebNmleWUntNU.
{"copyright_id":"0xb65becf21577b609fcd503b9e3497f5a37dc80a7e5b2075bcd8583b4389e91fa","isrc":"BXTQW2400017","name":"Chapa Máxima","registered_at":"2026-06-01T04:57:56Z","spotify_id":"3yCtRV7LMeGBpvSHDR8uMV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65becf21577b609fcd503b9e3497f5a37dc80a7e5b2075bcd8583b4389e91fa. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3yCtRV7LMeGBpvSHDR8uMV.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/3yCtRV7LMeGBpvSHDR8uMV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a3b453acd1e26b45e7ba63d4e3d081940d244408422252f25828f2f8111710. 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/0jWnSyaKoR5vxymWeBWPkD.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/0jWnSyaKoR5vxymWeBWPkD.
{"copyright_id":"0x749d58ab5f8adc4c36527eb3a19983efbb60e4acda2de1570adb66f104dd8041","isrc":"BXG6R2100943","name":"É a Gestão","registered_at":"2026-06-18T13:31:35Z","spotify_id":"2FWPvikkquheAGKFaQ166l","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749d58ab5f8adc4c36527eb3a19983efbb60e4acda2de1570adb66f104dd8041. 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/2FWPvikkquheAGKFaQ166l.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/2FWPvikkquheAGKFaQ166l.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6adcbbf6035b510b8b282e0ba6d65f9f13263e62e73fcc733589bd2b9d358a4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4YxKw871tdHgAAi9kodEU0.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/4YxKw871tdHgAAi9kodEU0.
{"copyright_id":"0x9e05aed460545fc5f096dfa9e3263c8d56cdefa4bf61d4850f81c24f28b94486","isrc":"BCSOR2200080","name":"Chute No Balde","registered_at":"2026-06-04T11:59:44Z","spotify_id":"2uytykBrV2v4y7QagHcOI3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e05aed460545fc5f096dfa9e3263c8d56cdefa4bf61d4850f81c24f28b94486. 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/2uytykBrV2v4y7QagHcOI3.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/2uytykBrV2v4y7QagHcOI3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442e6113ed694f285c623060343f89b095eec091cef6c748ead9d66f5305e7c0. 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/4uKx2P2DJ32ng73pjWqicJ.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/4uKx2P2DJ32ng73pjWqicJ.
{"copyright_id":"0xc95f70b56aa477ae8e6a2d9f145a8f6db74f8563965a23405e5e50ab06962e4c","isrc":"BXG6R2300184","name":"Coisas Leves","registered_at":"2026-06-17T21:21:06Z","spotify_id":"1IuITInTzqhFShKvptCvks","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95f70b56aa477ae8e6a2d9f145a8f6db74f8563965a23405e5e50ab06962e4c. 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/1IuITInTzqhFShKvptCvks.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/1IuITInTzqhFShKvptCvks.
{"copyright_id":"0x2dc910f4ac4c9b1890a76879a9433df6c2cadf1ff3d20fad39f3c2fa7b819989","isrc":"QZZEC2319634","name":"Qual Calcinha","registered_at":"2026-06-06T16:16:07Z","spotify_id":"0THIQb8cyqXuIF5Nd74c4w","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc910f4ac4c9b1890a76879a9433df6c2cadf1ff3d20fad39f3c2fa7b819989. 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/0THIQb8cyqXuIF5Nd74c4w.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/0THIQb8cyqXuIF5Nd74c4w.
{"copyright_id":"0x1026f74d96d9bdcca6f5147fc35a077d129f6c21ee61fdd141cee2bc52b173b1","isrc":"QZNJY2323907","name":"Cheio de Malote","registered_at":"2026-06-09T04:41:17Z","spotify_id":"0tjtIN0o4vL9yI3BX9QMWn","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1026f74d96d9bdcca6f5147fc35a077d129f6c21ee61fdd141cee2bc52b173b1. 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/0tjtIN0o4vL9yI3BX9QMWn.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/0tjtIN0o4vL9yI3BX9QMWn.