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 0x395a87074470834216f76703214c32c6303c50e0e27257cf23b454e7ca1ae01a. 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/2d155a39-1dad-4c82-b046-11c267462fef.json and https://artists.proofprofile.net/proofs/artist/2d155a39-1dad-4c82-b046-11c267462fef.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 0x32654437391727784296b61b7580775f403d6df5f7eeed7c1f846b51d2e2e894. 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/4OsiT0zN43XkNILxO6SsxM.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/4OsiT0zN43XkNILxO6SsxM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e772930cd6306c113b3db32026d1d4d973ddf4abc92efe140936552b20c651. 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/6GYZgeV5lYVyBJzgtztdao.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/6GYZgeV5lYVyBJzgtztdao.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39a77814ba07bdd1c953ac91138560cde784a31701e54e1980dbea511e2f9f3. 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/4f97QbEPWDUGcyAS7UCYig.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/4f97QbEPWDUGcyAS7UCYig.
{"copyright_id":"0x295aa8b72b64bf238d57404b7b54bc3fcc93baecf4bd0248ef8442e27efeaf21","isrc":"ES7311200168","name":"Dinero No Se Come","registered_at":"2026-06-27T11:43:06Z","spotify_id":"4XvhEtgcTOk7vudHfcHQRD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295aa8b72b64bf238d57404b7b54bc3fcc93baecf4bd0248ef8442e27efeaf21. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4XvhEtgcTOk7vudHfcHQRD.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/4XvhEtgcTOk7vudHfcHQRD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5324c76f4a2ae3d3d019b7de784c5069b0ea54bc4bb79827a60412f59383af81. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4kIf8DQ6jt5BcNiNnW3kcB.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/4kIf8DQ6jt5BcNiNnW3kcB.
{"copyright_id":"0x2d0ad8a89265df0a39731f75c3fb6e283584b5b7bd857ac72eadbfe4c5f57eb8","isrc":"ES7311200170","name":"Punk Parranda","registered_at":"2026-06-18T18:45:24Z","spotify_id":"7x2Kz3y0NXBwsxpoxfudvz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0ad8a89265df0a39731f75c3fb6e283584b5b7bd857ac72eadbfe4c5f57eb8. 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/7x2Kz3y0NXBwsxpoxfudvz.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/7x2Kz3y0NXBwsxpoxfudvz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f13e70bd048acae2e321503ff7c271af9b1d49e2b3ee8d6147d27ed68f3f13. 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/6ks3I0sfVf8XErgFFpw0oZ.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/6ks3I0sfVf8XErgFFpw0oZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0ef3e2b99e5f1806dfbe845d9344e3d3c6eb00b335a339dba3e4d23ceb67be. 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/7fvmECwrqvzudWvCuzZSBD.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/7fvmECwrqvzudWvCuzZSBD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868dab854dfeccb34657771335b31d5588e8c8b3c7e8040f832b5752542a9641. 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/2uv98mCLiCeEJjm30svUWF.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/2uv98mCLiCeEJjm30svUWF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840f1f559965e2eed837d076b7aac8e52515c6eb1ab7aba2640cd3d4162aa67f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2k6LSg4l6S1UBSugnPG5qp.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/2k6LSg4l6S1UBSugnPG5qp.
{"copyright_id":"0x5775ebef9a2543972fc34a5404b5a477d920b8d24e73192c5b0da8ffb058f97c","isrc":"ES7311000083","name":"Todos los días sale el sol","registered_at":"2026-06-22T05:33:58Z","spotify_id":"2av4lllmNzu8JzSVcbb7ag","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5775ebef9a2543972fc34a5404b5a477d920b8d24e73192c5b0da8ffb058f97c. 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/2av4lllmNzu8JzSVcbb7ag.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/2av4lllmNzu8JzSVcbb7ag.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840f1f559965e2eed837d076b7aac8e52515c6eb1ab7aba2640cd3d4162aa67f. 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/6z0Bkfic3ryxuYqwmn4Mbn.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/6z0Bkfic3ryxuYqwmn4Mbn.