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 0xf3116468b827454fbd2dfad33b26838ebcdc71f1b7da3654ab9038a7e4ac17fe. 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/b4a33e09-f7ee-444e-bdd0-0f9a9c55188d.json and https://artists.proofprofile.net/proofs/artist/b4a33e09-f7ee-444e-bdd0-0f9a9c55188d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Street Appreciation (feat. Taleban Dooda)
{"copyright_id":"0x691e1680b3719ab1b0cb413c01aba3a2ae7a2e046edd5f8eda93773c2ff58ab9","isrc":"USLD91728315","name":"Again & Again (feat. Quail P)","registered_at":"2026-06-19T10:17:55Z","spotify_id":"2GwqBc4kr1qK0gQTvEcNLj","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 0x691e1680b3719ab1b0cb413c01aba3a2ae7a2e046edd5f8eda93773c2ff58ab9. 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/2GwqBc4kr1qK0gQTvEcNLj.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/2GwqBc4kr1qK0gQTvEcNLj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b927868a5d1b744e142b76b1186c9943664f348ca997a09313632fd2494670. 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/3q7BmCOEcYk3rbFob1vEfI.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/3q7BmCOEcYk3rbFob1vEfI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b64453979a2a9bdcaab30372d924408a64fa50246e42e7cf7e72d37652d0bf. 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/1kx0kadPN0OAw708RsG7o5.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/1kx0kadPN0OAw708RsG7o5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda50bca288ec512a19e99094db828b7fac5e7c1d14b4b84c2312603d3a51686a. 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/2lkfjnpqOXS3GXDJRLidOz.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/2lkfjnpqOXS3GXDJRLidOz.