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 0xd6053bb444791e66b85988f9dfa082db545fddd15585a608652b6991c11f37b6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fcfc506a-e87d-4539-8f2a-9e0b8dca6c1d.json and https://artists.proofprofile.net/proofs/artist/fcfc506a-e87d-4539-8f2a-9e0b8dca6c1d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Boží Plán (feat. Sergei Barracuda & Ezy)
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 0xc7755e3f2c8223cfeb17a08ca3299d9114e1477b525c709970b8a405d65afc97. 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/7d28vUthmvPauqKPO323VT.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/7d28vUthmvPauqKPO323VT.
{"copyright_id":"0x5bce13cc0a7dc6a60d9de55cf363a04c02fb6bca850e04f9769ada914e6d654c","isrc":"TCADC1793932","name":"Na Hotelu","registered_at":"2026-06-19T06:17:34Z","spotify_id":"3lKzPTZ9Pdctig5lsoHgLm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bce13cc0a7dc6a60d9de55cf363a04c02fb6bca850e04f9769ada914e6d654c. 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/3lKzPTZ9Pdctig5lsoHgLm.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/3lKzPTZ9Pdctig5lsoHgLm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5777cc373bcfca0c025f6126b89eae27ea2aea755832a8877381fc1c404b6f10. 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/6Brr86vOVJl5ANBxKO1acG.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/6Brr86vOVJl5ANBxKO1acG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289a54b6f5b230cd75d2091024386c8466abcf40540aca52348318d41e92d422. 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/3TZ2n7U3326VXijkAiL7ax.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/3TZ2n7U3326VXijkAiL7ax.
Pouliční Ekonomická 2.5: Notorický Hustler
{"copyright_id":"0x4c2783d3ba6fa45c35742d104b888466cce5ad5e9ca23d0b2ed0627abde410bd","isrc":"TCACR1671301","name":"Jako Mafie (feat. Pastor)","registered_at":"2026-06-07T21:26:12Z","spotify_id":"4rAjp6KAZmC2WY6cL8x5QU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2783d3ba6fa45c35742d104b888466cce5ad5e9ca23d0b2ed0627abde410bd. 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/4rAjp6KAZmC2WY6cL8x5QU.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/4rAjp6KAZmC2WY6cL8x5QU.
Pouliční Ekonomická 3: Láska & Loyalita (Deluxe Version)
{"copyright_id":"0xf746ce4757f913927642cba2f5e2b1c532feda34245c12526d63a76f37aca56d","isrc":"TCADW1819922","name":"Láska & Loyalita","registered_at":"2026-06-08T22:26:18Z","spotify_id":"1PmuMIqEVQTQzAD3Fy0oAe","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf746ce4757f913927642cba2f5e2b1c532feda34245c12526d63a76f37aca56d. 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/1PmuMIqEVQTQzAD3Fy0oAe.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/1PmuMIqEVQTQzAD3Fy0oAe.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf746ce4757f913927642cba2f5e2b1c532feda34245c12526d63a76f37aca56d. 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/1KPTuA0S1Ejpnbaxrxg62s.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/1KPTuA0S1Ejpnbaxrxg62s.
Poulicni Ekonomicka II - Nechvalne Prosluly
{"copyright_id":"0x4e2f1bc8add6cb997d4614784677c8b315d01f6d61da4eccd66c0e35c805672d","isrc":"TCABH1284639","name":"Tohle Neni Lovesong (feat. Pastor)","registered_at":"2026-06-20T11:33:14Z","spotify_id":"55ZVyiY5eoZcYqDVsucnIq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2f1bc8add6cb997d4614784677c8b315d01f6d61da4eccd66c0e35c805672d. 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/55ZVyiY5eoZcYqDVsucnIq.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/55ZVyiY5eoZcYqDVsucnIq.
{"copyright_id":"0xd472e828bde60c9e0daf61e656261cedb6bac8f1a46af3ab106d841e29048e49","isrc":"TCABH1284646","name":"Nech Me Zarit (feat. Delik & Pastor)","registered_at":"2026-06-24T06:58:25Z","spotify_id":"0srIze5iPBA34GfcvuO27q","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd472e828bde60c9e0daf61e656261cedb6bac8f1a46af3ab106d841e29048e49. 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/0srIze5iPBA34GfcvuO27q.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/0srIze5iPBA34GfcvuO27q.