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 0xbdbbd292394a0c6679c3339b5ab46834514de965272d007ec4eb2b4ae8e06e3e. 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/9f46110b-c19e-4465-a395-93e5cdfa7ac1.json and https://artists.proofprofile.net/proofs/artist/9f46110b-c19e-4465-a395-93e5cdfa7ac1.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 0xbd96478bdf94352f63ed15b3b350ace563b8c3fe4555475c1e55fa839aa6e9b0. 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/0uPfS3yyWFqqyuAeIzpYHV.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/0uPfS3yyWFqqyuAeIzpYHV.
{"copyright_id":"0xe9389e81c3b0c91c46ecbc6040fc00bf7494d266c2dc64b317180b5c0d879a94","isrc":"QZTBA2376339","name":"Ve Chandreya","registered_at":"2026-06-07T03:49:42Z","spotify_id":"4JMXNM9NmWjkgUAzNOIqBi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9389e81c3b0c91c46ecbc6040fc00bf7494d266c2dc64b317180b5c0d879a94. 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/4JMXNM9NmWjkgUAzNOIqBi.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/4JMXNM9NmWjkgUAzNOIqBi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9d5d75d89e2c529dd0ad05b8b3fdf62323eb5ca865410bb47b29ae084627b1. 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/6ISf4PTMACTHuDyx0WbTri.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/6ISf4PTMACTHuDyx0WbTri.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b2690551bb889e40ce06be7320f2fab7d7665d6984f058d8d1b989968290dc. 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/6KVKzbu7aygdMPeE7SNDkB.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/6KVKzbu7aygdMPeE7SNDkB.
{"copyright_id":"0xf5ece4aaa82b9f08a9a8d0bb23aff3fa709d8b76730f0c8521577b4cdce3670e","isrc":"QZTB42374152","name":"This is Love","registered_at":"2026-06-10T01:19:26Z","spotify_id":"4RCCVtd4VGkl97BUYZ6GKb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ece4aaa82b9f08a9a8d0bb23aff3fa709d8b76730f0c8521577b4cdce3670e. 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/4RCCVtd4VGkl97BUYZ6GKb.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/4RCCVtd4VGkl97BUYZ6GKb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6524c14f30e40c6c6ca67c6058b3d7a5a563dcaae852c1bee5db15154dd961. 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/470uWL5cYYqoRU9z3as0Vw.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/470uWL5cYYqoRU9z3as0Vw.