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 0x16e634490acadd87f1f9714463cb95fbe1a3435d6998bbd83e067160076483a0. 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/f8d27b29-6ea3-49cd-b0ff-6ab2a224a6e1.json and https://artists.proofprofile.net/proofs/artist/f8d27b29-6ea3-49cd-b0ff-6ab2a224a6e1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rosa Maria (Billy Esteban & Karno B Remix)
Rosa Maria - Billy Esteban & Karno B Remix
{"copyright_id":"0x208e99e7f23555f8aefa8d7a49346432e66f321a9858095bd6b5d226a8ed9a0d","isrc":"US83Z2355983","name":"Rosa Maria - Billy Esteban & Karno B Remix","registered_at":"2026-06-09T07:49:08Z","spotify_id":"1lYfpa2JW7jHlVieegPIrp","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 0x208e99e7f23555f8aefa8d7a49346432e66f321a9858095bd6b5d226a8ed9a0d. 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/1lYfpa2JW7jHlVieegPIrp.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/1lYfpa2JW7jHlVieegPIrp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc579eb2984546f7edf9f7e5a08809e6e43c8a6b708353d41f9b375ecc356e451. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6Rd20ssnomimPfXJQYNdL1.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/6Rd20ssnomimPfXJQYNdL1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c5b3e94d8bd45b02e48a00b8a72c3f00bf0376c06dcf5ab4d91ec9391485cb. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7dSFf989THxcPakIoAHsCB.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/7dSFf989THxcPakIoAHsCB.
{"copyright_id":"0xe6c5b3e94d8bd45b02e48a00b8a72c3f00bf0376c06dcf5ab4d91ec9391485cb","isrc":"US83Z2476618","name":"This Is AA - Mixed","registered_at":"2026-06-11T02:21:42Z","spotify_id":"7ifmIETs4dWClDNf5C8eye","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c5b3e94d8bd45b02e48a00b8a72c3f00bf0376c06dcf5ab4d91ec9391485cb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7ifmIETs4dWClDNf5C8eye.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/7ifmIETs4dWClDNf5C8eye.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c5b3e94d8bd45b02e48a00b8a72c3f00bf0376c06dcf5ab4d91ec9391485cb. 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/279jKx5fu7MnpsfDtuIs5h.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/279jKx5fu7MnpsfDtuIs5h.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc579eb2984546f7edf9f7e5a08809e6e43c8a6b708353d41f9b375ecc356e451. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4AXs71PtWaeUcPg2uHIxGs.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/4AXs71PtWaeUcPg2uHIxGs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc579eb2984546f7edf9f7e5a08809e6e43c8a6b708353d41f9b375ecc356e451. 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/5JXG4ESlebGnY4oQLNzDVg.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/5JXG4ESlebGnY4oQLNzDVg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6bc92be7e3cd78c7c05f437982462a75773a9c08298242b76bd4234fd58a07. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T20:42:37Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3lTrHIAycWS3zzKPbAa8bo.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/3lTrHIAycWS3zzKPbAa8bo.