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 0x561595db6fa5f36fb69c772972e4ce79cc80857ffb2c5ca9c984174cc6785bb1. 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/5439cfa9-addf-4470-8b83-65f72f2853a2.json and https://artists.proofprofile.net/proofs/artist/5439cfa9-addf-4470-8b83-65f72f2853a2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
It's Her Party (And She’ll Lie If She Wants To)
{"copyright_id":"0x2689ffddee686d9f4cedb7207a49dbe5c95e8b6e0bb803f29e820ff2478cdecd","isrc":"CA6D22100227","name":"I Need Ya","registered_at":"2026-06-23T03:12:12Z","spotify_id":"0KcTvRKMYdX2zcrKSEukDH","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 0x2689ffddee686d9f4cedb7207a49dbe5c95e8b6e0bb803f29e820ff2478cdecd. 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/0KcTvRKMYdX2zcrKSEukDH.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/0KcTvRKMYdX2zcrKSEukDH.
{"copyright_id":"0xce6b6b8a1355a42ff4bbaee26057d884e37e549a1fd94e017b84497f17a1ddad","isrc":"CA6D22300115","name":"Never Let You Down","registered_at":"2026-06-05T09:31:33Z","spotify_id":"3HnGSgsJA5KkXAnVthERri","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6b6b8a1355a42ff4bbaee26057d884e37e549a1fd94e017b84497f17a1ddad. 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/3HnGSgsJA5KkXAnVthERri.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/3HnGSgsJA5KkXAnVthERri.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a7f48fcce70895f424355746c44b825a6b310bff1fedd0300478e05dca8324. 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/1Dho6Tu3ko1AEHzJWTvI0K.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/1Dho6Tu3ko1AEHzJWTvI0K.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab7cc527f452644a134237bdf58f10e94cd60d4605e47a2e50e3c161f3c6df9. 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/2HGblG20PjYgHuLuxfotLM.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/2HGblG20PjYgHuLuxfotLM.