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 0xc5b3d1e4afe53a7dafada75ea77826f809eb7a59199272ac2c7e1ce3da38f02c. 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/669d0626-0367-42a0-9742-5c10728a31b1.json and https://artists.proofprofile.net/proofs/artist/669d0626-0367-42a0-9742-5c10728a31b1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Broken Love (Remix) - Nando Fortunato Remix
{"copyright_id":"0x088b25235ce8dec89f7721ad7b0434c886fa423d8456957145201f6d5fa85d32","isrc":"FRX762265158","name":"Give it 2 You - Ivan Summer Remix","registered_at":"2026-06-20T10:57:35Z","spotify_id":"1EsmBVAc1FpMmimrxBbHey","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 0x088b25235ce8dec89f7721ad7b0434c886fa423d8456957145201f6d5fa85d32. 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/1EsmBVAc1FpMmimrxBbHey.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/1EsmBVAc1FpMmimrxBbHey.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4b189b6a4fe042daeb6049295e2ac3309a1091dc0578697dfbf720dc7570e5. 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/34FROA8mHdG8116EGfVQEu.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/34FROA8mHdG8116EGfVQEu.
{"copyright_id":"0x64fad54d4025c965afbdd93aa293d1d5cca04da604b6891b8a335aacdc88dce3","isrc":"TCAHS2331715","name":"Heartbeat Tonight (Chunkee Intro Remix)","registered_at":"2026-06-18T16:26:37Z","spotify_id":"2pKHfqCTOB59RoKWGcScb4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fad54d4025c965afbdd93aa293d1d5cca04da604b6891b8a335aacdc88dce3. 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/2pKHfqCTOB59RoKWGcScb4.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/2pKHfqCTOB59RoKWGcScb4.