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 0xc3414dbe74a1dfa4676d35abfa301528903ac266161067ddfed20309189b13d5. 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/e32526fd-aed4-4675-85d0-7d5231b7463f.json and https://artists.proofprofile.net/proofs/artist/e32526fd-aed4-4675-85d0-7d5231b7463f.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 0x93ba44d4d73a8b4c75b7eef6a5eae8492e257a9bd9b6d5b49f7ae85551c23b43. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3agrUDs9DzUsXrQ9yUIp9l.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/3agrUDs9DzUsXrQ9yUIp9l.
{"copyright_id":"0x85f8a8e23a03f1289b5706c47f96076a3c603f27d8da3545e17f4c051bdf89da","isrc":"BX12K2200027","name":"Pega o Guanabara - Ao Vivo","registered_at":"2026-06-04T06:28:14Z","spotify_id":"7CIj5SFTB6WPJrYjLZN5bp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f8a8e23a03f1289b5706c47f96076a3c603f27d8da3545e17f4c051bdf89da. 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/7CIj5SFTB6WPJrYjLZN5bp.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/7CIj5SFTB6WPJrYjLZN5bp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41a44a82b83e03eaa87f055898283ce5814ef569c1f68931ad30a3c95f9dddf. 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/4JCNKUDiJi9GOKjfur6R9S.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/4JCNKUDiJi9GOKjfur6R9S.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6996c4ad1508466206548d0f45e80268da85389703b7b20d1079009387e2cf43. 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/44r0rtt0mDvjg9KCcf51Eu.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/44r0rtt0mDvjg9KCcf51Eu.
{"copyright_id":"0x85f8a8e23a03f1289b5706c47f96076a3c603f27d8da3545e17f4c051bdf89da","isrc":"BX12K2200027","name":"Pega o Guanabara - Ao Vivo","registered_at":"2026-06-04T06:28:14Z","spotify_id":"2z9cSxPrqaraBZqrPYOup7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f8a8e23a03f1289b5706c47f96076a3c603f27d8da3545e17f4c051bdf89da. 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/2z9cSxPrqaraBZqrPYOup7.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/2z9cSxPrqaraBZqrPYOup7.