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 0x5a8cb847b1819c9f131776bf1c54504328b174d609110482043ae57df4756264. 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/2a275aba-4406-49cc-91ae-9cf903394150.json and https://artists.proofprofile.net/proofs/artist/2a275aba-4406-49cc-91ae-9cf903394150.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xb00467289698b72f1c80070a31ca55be80adb2fdc925b47a4bfc3cb43f9f7108","isrc":"USCGH2159886","name":"Meteórico Astronómico","registered_at":"2026-06-08T03:39:49Z","spotify_id":"7mBx7LahSYCiQ5624obXoR","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 0xb00467289698b72f1c80070a31ca55be80adb2fdc925b47a4bfc3cb43f9f7108. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7mBx7LahSYCiQ5624obXoR.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/7mBx7LahSYCiQ5624obXoR.
{"copyright_id":"0x5a4fac557d42f60f46b2daca0d9fbd37169d97b0d44a0a55d3dec0dafb118a08","isrc":"USHM22157257","name":"A los Montes","registered_at":"2026-06-09T04:47:50Z","spotify_id":"0KENfhti2zak9y73t0o7Zq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4fac557d42f60f46b2daca0d9fbd37169d97b0d44a0a55d3dec0dafb118a08. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0KENfhti2zak9y73t0o7Zq.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/0KENfhti2zak9y73t0o7Zq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41086b3b25a58860d4fff7ed65287b4555dadd779f0b721c9acdef20e98f9490. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5BvbzM6NH9RFf0PeZAJ3TC.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/5BvbzM6NH9RFf0PeZAJ3TC.
{"copyright_id":"0x41086b3b25a58860d4fff7ed65287b4555dadd779f0b721c9acdef20e98f9490","isrc":"QZ2J21505264","name":"Barquitos De Papel","registered_at":"2026-06-10T17:54:51Z","spotify_id":"4AndVnmWLlf4TCH5eVXpxh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41086b3b25a58860d4fff7ed65287b4555dadd779f0b721c9acdef20e98f9490. 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/4AndVnmWLlf4TCH5eVXpxh.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/4AndVnmWLlf4TCH5eVXpxh.
{"copyright_id":"0xb00467289698b72f1c80070a31ca55be80adb2fdc925b47a4bfc3cb43f9f7108","isrc":"USCGH2159886","name":"Meteórico Astronómico","registered_at":"2026-06-08T03:39:49Z","spotify_id":"4zZ9mSNDKRyRmZ7ryWOGqd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00467289698b72f1c80070a31ca55be80adb2fdc925b47a4bfc3cb43f9f7108. 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/4zZ9mSNDKRyRmZ7ryWOGqd.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/4zZ9mSNDKRyRmZ7ryWOGqd.
{"copyright_id":"0x86213e5cd3e6be4792b5417279bbe385c5d9680aa9c41c43a2519a5c22d54333","isrc":"USHM92163107","name":"Necesito Necesitarte","registered_at":"2026-06-08T12:27:30Z","spotify_id":"6CiT3oZbZnSrMoeXHAvWTK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86213e5cd3e6be4792b5417279bbe385c5d9680aa9c41c43a2519a5c22d54333. 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/6CiT3oZbZnSrMoeXHAvWTK.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/6CiT3oZbZnSrMoeXHAvWTK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b40f92514df22b7959af837f6595ead3d173ae2169cb0b6922e878506234163. 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/223NwcTkqEeuvXVFBHKVum.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/223NwcTkqEeuvXVFBHKVum.
{"copyright_id":"0x5a4fac557d42f60f46b2daca0d9fbd37169d97b0d44a0a55d3dec0dafb118a08","isrc":"USHM22157257","name":"A Los Montes","registered_at":"2026-06-09T04:47:50Z","spotify_id":"2AbUfGIsT824qfoc3Xm2X9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4fac557d42f60f46b2daca0d9fbd37169d97b0d44a0a55d3dec0dafb118a08. 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/2AbUfGIsT824qfoc3Xm2X9.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/2AbUfGIsT824qfoc3Xm2X9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9988b990a447ad58b5d3cdf97ef345123b692683e718e53e0c5d246156fd992a. 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/7dWbHZaYlJwwUNjfhKOpLB.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/7dWbHZaYlJwwUNjfhKOpLB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3e22ed9fa6f8d76a33e5610af0edf9591bba9537d618aa96f60bbc3b758e32. 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/72IgP8yymB8TQYFKgysU1j.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/72IgP8yymB8TQYFKgysU1j.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d49bbd781fafe42eac0477a500e6d515e39c5924aab4c6b0dd51f614461e14d. 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/52vTKgl457WFQ2C0k1Sjo5.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/52vTKgl457WFQ2C0k1Sjo5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab475d693116c32fef7387f772cffbb66c8878f1074ed2c88887ecb1880c1d41. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1w4jmcNO36UA48HVGUNsTL.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/1w4jmcNO36UA48HVGUNsTL.
{"copyright_id":"0xe56fba9ff504f7e5ee43adfd20cd1f20a94b098060fd2357a5d16b688b97e76f","isrc":"USX9P2042392","name":"Miserables Desastres","registered_at":"2026-06-21T03:17:46Z","spotify_id":"5iS15qGidT8uwGifydaGBl","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56fba9ff504f7e5ee43adfd20cd1f20a94b098060fd2357a5d16b688b97e76f. 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/5iS15qGidT8uwGifydaGBl.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/5iS15qGidT8uwGifydaGBl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758e4007153c0f72037b70796139db2aa2d823b584f038b6ccf7db0c8f729589. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6MGoiS7nL5yAoDhUAaVxOo.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/6MGoiS7nL5yAoDhUAaVxOo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb725057b1699e1ca8858144562d9f508bb08369ce58ee4660f20a815c5c99aac. 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/2l0Owrb0n9OxH9pkRn8kYN.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/2l0Owrb0n9OxH9pkRn8kYN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0980ab5f26f46261a175bbc020d431e850c21a6eddedaa5c5341f391a94de84e. 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/34U98F9U98Yx77acLQREU6.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/34U98F9U98Yx77acLQREU6.