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 0xfa2529643f25cb4a2a9e8137687e865502127b55f528971a66a709725358a04c. 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/d44cfee4-8dce-4acf-a535-28fd3ed4f2bf.json and https://artists.proofprofile.net/proofs/artist/d44cfee4-8dce-4acf-a535-28fd3ed4f2bf.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 0xcc739a8a80d6c6a1259d63a8f25395505b46185edb5b06f355ed0581db4100f0. 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/12sxunAocKmrn8AzPVn8hU.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/12sxunAocKmrn8AzPVn8hU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa5026ea5615f1ccd36632bf2a9c3693c92c64936c0a5d25d9399c0a541d04a. 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/68ovDYwtyTihsZoik5G55u.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/68ovDYwtyTihsZoik5G55u.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa673c1a1bb563c84b89784feced00ab22d2749b8627f90480f3b87acc3b3aa5. 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/65GS5kpICcSyB4KXiOTgS7.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/65GS5kpICcSyB4KXiOTgS7.
{"copyright_id":"0x3e28f9f8baa6e723c83d243fb276d6cdfccd8f328249989886f8f3f84a3ffd88","isrc":"QZHZ42128211","name":"Primeira Namorada","registered_at":"2026-06-19T16:34:42Z","spotify_id":"0S63pzD8fAjmnIofALEKYw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e28f9f8baa6e723c83d243fb276d6cdfccd8f328249989886f8f3f84a3ffd88. 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/0S63pzD8fAjmnIofALEKYw.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/0S63pzD8fAjmnIofALEKYw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55338642d4c98ef11d3c50db46a9c3fd0c438281cc1b62fb9d362cc061f4970c. 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/2mtgXYRh4mhLnkNgNeoHWI.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/2mtgXYRh4mhLnkNgNeoHWI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5767d926d6d388ada3fd02fb8db3c9114c12460c77700fbfd6878727c4926c7c. 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/4nHoVAplfYw8MyK0wCiJYc.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/4nHoVAplfYw8MyK0wCiJYc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c09eee7cf8059ae48c778fc7c81dc10da97633e62a0b8f6d7e6fa310124b66. 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/4znDeEcMfMrJGYgx7kMi0Z.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/4znDeEcMfMrJGYgx7kMi0Z.
{"copyright_id":"0xa9946b793daf6cb9d8c5fdef82acd7e95a651e1df44998052b1a93b46d4751af","isrc":"QZ5FN2261166","name":"Namorei Sozinho","registered_at":"2026-06-08T05:27:41Z","spotify_id":"37dVILQyP1ocYvN4Yn4xaa","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9946b793daf6cb9d8c5fdef82acd7e95a651e1df44998052b1a93b46d4751af. 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/37dVILQyP1ocYvN4Yn4xaa.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/37dVILQyP1ocYvN4Yn4xaa.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbadfc3f6723dccfcde5f136a41c9c6df89e896ffd6f94a72e6054ff369b89336. 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/3IYZE6wxGzQKuJCQ1Zs6XV.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/3IYZE6wxGzQKuJCQ1Zs6XV.
{"copyright_id":"0x3e5028e28c95dd208562c8395bdfffc4b444f9109a0ae99de13063a0f64df73d","isrc":"BC9PK2300062","name":"Pronto pra Viver","registered_at":"2026-06-06T18:02:14Z","spotify_id":"4dwoN2YixyDexinDZNU40z","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5028e28c95dd208562c8395bdfffc4b444f9109a0ae99de13063a0f64df73d. 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/4dwoN2YixyDexinDZNU40z.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/4dwoN2YixyDexinDZNU40z.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0917f6454bdf1ec1308c45b029fd9f412793ae30deb112e68430a9bb994e244. 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/0uXHpJOar6Ppd58AXKqVJz.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/0uXHpJOar6Ppd58AXKqVJz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850b11b78a02d4ffb94a4c2b3486902f4c6871a204a0eee23a56c48a46abebb2. 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/6998l50tOJbGCzzidvT6HU.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/6998l50tOJbGCzzidvT6HU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa351816dabf282318a6b2b6810d31bc4312e8652eaec31ed8b78500e5278dd. 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/3UdvVwRFSE8wPAjKQJvJ21.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/3UdvVwRFSE8wPAjKQJvJ21.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624851c69abf1a02a16a4545769686760737edf38311a9f8d070bc9924e3574f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0BL26JfXTiqp1e1utIl6rQ.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/0BL26JfXTiqp1e1utIl6rQ.