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 0x3e2cc25278e47377b1799b41a13030e7dce2821102efe0796132c419925e4b1c. 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/9bdd95e3-22e5-4ea1-a2c0-11126cbe2e62.json and https://artists.proofprofile.net/proofs/artist/9bdd95e3-22e5-4ea1-a2c0-11126cbe2e62.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x7b3e3ac4278fd87fc93e7d4386b60dffb4c2c3ab1e439ba85df619140d2ebc56","isrc":"ARBG62000011","name":"Si Me Das a Elegir","registered_at":"2026-06-04T10:53:30Z","spotify_id":"7FsuIZlNX1mVmx2kSZ9y6B","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 0x7b3e3ac4278fd87fc93e7d4386b60dffb4c2c3ab1e439ba85df619140d2ebc56. 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/7FsuIZlNX1mVmx2kSZ9y6B.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/7FsuIZlNX1mVmx2kSZ9y6B.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6526bbbde76bab96445f8e1e412c158fc47a17150c81d9b2e7b1045319b7b18a. 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/3mLMvBTENujvlNSgGv5KPo.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/3mLMvBTENujvlNSgGv5KPo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6a1663bdb1f78cc3c93b3aa95baf044db13c8de2e91a8257fc2c4e96c68b34. 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/6xI2vCsIkHw4oQlKy5WXY4.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/6xI2vCsIkHw4oQlKy5WXY4.
{"copyright_id":"0xc905819f4b5822fe778a99a9d21955c988daf991b90e595dbd4d0c15ec88ee6b","isrc":"QMFME2295785","name":"Santo Grial","registered_at":"2026-06-04T10:41:48Z","spotify_id":"5glEywhgiNEk1GbEqcWfiO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc905819f4b5822fe778a99a9d21955c988daf991b90e595dbd4d0c15ec88ee6b. 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/5glEywhgiNEk1GbEqcWfiO.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/5glEywhgiNEk1GbEqcWfiO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029a7765c82ca2bd14a511650722a6a9373abb6ad3e7f444030ecf2b79254ba4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2lwRdOzsuL7mJWQpkGMxpU.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/2lwRdOzsuL7mJWQpkGMxpU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8689e38efd6a70310e03be6901119fe34dbedb58051dfd59931f7f59e54c0caa. 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/3BAUa2drJhBVgxHkLVLqQi.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/3BAUa2drJhBVgxHkLVLqQi.
{"copyright_id":"0xe5f952108584f88c0f4643d4cba256440cdaff12bc400293c04d8dd8ac4e1c94","isrc":"QZNWX2074857","name":"Don't Hate The Player","registered_at":"2026-06-19T23:22:54Z","spotify_id":"7KYpsitWU1Ev9RY3A7KEIT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f952108584f88c0f4643d4cba256440cdaff12bc400293c04d8dd8ac4e1c94. 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/7KYpsitWU1Ev9RY3A7KEIT.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/7KYpsitWU1Ev9RY3A7KEIT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a755d55c4c23cc93ed28d8af37dd9e8f813735bfb28d6d6e262de492e40849. 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/3ZggUiqSohUsKMihEHhg5d.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/3ZggUiqSohUsKMihEHhg5d.