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 0x013af02222808b1028eba6a9f3169086dad1dfcada08353e1b53396430704b19. 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/2bf5f99a-8a8d-490a-b582-198f7169f846.json and https://artists.proofprofile.net/proofs/artist/2bf5f99a-8a8d-490a-b582-198f7169f846.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x80b899e7dfa564a796ac3f6634f047dd0543fbd27addb2ec525c282da88a9e0f","isrc":"GX5MY2288622","name":"In Over Your Head","registered_at":"2026-06-06T06:37:27Z","spotify_id":"2772k4wjMuGoSBmglKJWMC","type":"track"}
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 0x80b899e7dfa564a796ac3f6634f047dd0543fbd27addb2ec525c282da88a9e0f. 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/2772k4wjMuGoSBmglKJWMC.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/2772k4wjMuGoSBmglKJWMC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aeaa80f3d36e32d459d52fe483d80ec129950c3cdb27a6ea61e6aa43f861450. 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/6uegylYy8FSaIbUP9PcPwq.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/6uegylYy8FSaIbUP9PcPwq.
{"copyright_id":"0x9171b59eddcc977b990f8c8237bd9c9bb3866fc92624f66a02d7365aa8eab17d","isrc":"NLRD52119947","name":"Rot The Brain","registered_at":"2026-06-22T20:31:10Z","spotify_id":"3qvEqzfK3ntHrCxqmosVhd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9171b59eddcc977b990f8c8237bd9c9bb3866fc92624f66a02d7365aa8eab17d. 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/3qvEqzfK3ntHrCxqmosVhd.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/3qvEqzfK3ntHrCxqmosVhd.
{"copyright_id":"0x9171b59eddcc977b990f8c8237bd9c9bb3866fc92624f66a02d7365aa8eab17d","isrc":"NLRD52119947","name":"Rot The Brain","registered_at":"2026-06-22T20:31:10Z","spotify_id":"7eeX86to0fYZVdXyvTaaLh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9171b59eddcc977b990f8c8237bd9c9bb3866fc92624f66a02d7365aa8eab17d. 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/7eeX86to0fYZVdXyvTaaLh.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/7eeX86to0fYZVdXyvTaaLh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4175fcbdeabcc53affac7d3f76b8e1f5ad8640903698dd43958ca10ae17f16. 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/6CnejyYJYlNlZGrq5pGeF9.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/6CnejyYJYlNlZGrq5pGeF9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac22fd0e360b38664d7476d25b0460bf1c499fa03fb864574fc99940e7e99f1c. 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/0voWQKe1NfnQ6bKH9y26fG.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/0voWQKe1NfnQ6bKH9y26fG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294a2d60cbc7836ed0132461032824c5c5fc66d93c71156e900f56a9de392254. 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/7Co8vfxAG0mHm5s6YG90wc.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/7Co8vfxAG0mHm5s6YG90wc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264355c38a608d9cb4a57cdd4b0e85b8cea21de2570dc08c688e2560900fe3fb. 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/19i114fRD8Bk2N0MuUh4hp.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/19i114fRD8Bk2N0MuUh4hp.
{"copyright_id":"0xc5f65d218eac56c63cb3668be5effe577f02fcab417d24c5c9490d4e776ce588","isrc":"GB2LD2310236","name":"No Money","registered_at":"2026-06-04T16:04:05Z","spotify_id":"2i9uoxjvgN6sA7fSfoHtKA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f65d218eac56c63cb3668be5effe577f02fcab417d24c5c9490d4e776ce588. 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/2i9uoxjvgN6sA7fSfoHtKA.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/2i9uoxjvgN6sA7fSfoHtKA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190434b2606fd47cc12b259604a1407f5b45cecaf400e67fe19b3b33bc840b78. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7D36cfnSzo9pFfC4zzrRqj.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/7D36cfnSzo9pFfC4zzrRqj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190434b2606fd47cc12b259604a1407f5b45cecaf400e67fe19b3b33bc840b78. 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/6DmKSl4O4TPgL1hqZRGLZc.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/6DmKSl4O4TPgL1hqZRGLZc.