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 0x968ce7c08027be5416313d39678e75f0b51d737423a3ae6b8b0b7736ea6344f4. 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/b1938040-d83e-4afc-8402-82b95b14027b.json and https://artists.proofprofile.net/proofs/artist/b1938040-d83e-4afc-8402-82b95b14027b.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 0x4a5c07e7ae765049f53a39eae84fabd61a5ded60167efb926f3688f4aeb394d4. 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/0dSkwXX1PZ9mb2O26V68bZ.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/0dSkwXX1PZ9mb2O26V68bZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3938d1296f784e2b3757fee8a01c70db5c6b94e2478b66801eb34fc226e3e010. 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/2wu40QT71lrvG8WiWXXV6Y.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/2wu40QT71lrvG8WiWXXV6Y.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16267c58b921dd582ee1b8b94f9e8376f2d9326c988e1b9729f7acc42b97bd75. 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/1UZzXXVwU9XQKlUZQmIr5q.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/1UZzXXVwU9XQKlUZQmIr5q.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5ed1995bbd218a1e0d6f44c61fe8345d88db051d8c197ef6ce7867705052e8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5QHV26AB4HeNMAOYiPHb78.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/5QHV26AB4HeNMAOYiPHb78.
{"copyright_id":"0xa55c0e71519d35cbafb7f569ad7c7d4627866d6644bfa072e7c6e8f24fc6e344","isrc":"FR96X2439514","name":"KINT VAGYOK A SORON","registered_at":"2026-06-04T07:41:39Z","spotify_id":"61lwlMPrt7VfUsVDjTWJF2","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55c0e71519d35cbafb7f569ad7c7d4627866d6644bfa072e7c6e8f24fc6e344. 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/61lwlMPrt7VfUsVDjTWJF2.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/61lwlMPrt7VfUsVDjTWJF2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fef99732971a608908325566ef1ef7ad9aa1e35c225301ec170c88b71586a6b. 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/3q3iSzQ1JldEND5xz5wZho.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/3q3iSzQ1JldEND5xz5wZho.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc892597dc76c05d7c0688336bd2a9ee876568d2778484b0bb9813663a3c03af6. 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/0Ro1NBqAymTPeQuHVNOekw.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/0Ro1NBqAymTPeQuHVNOekw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa9ae9d1e7c4edee287824f4e3331d1df19257c92830b37c827b56107f068ac. 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/1LuXPfE3lgAzS8w5IcHAbL.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/1LuXPfE3lgAzS8w5IcHAbL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2280656e214f70a3735769b81cb942d6576b4f7c3f0e1f5ef2cd72c6a3331692. 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/2UDcemhm2dMb3pbnza8zv3.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/2UDcemhm2dMb3pbnza8zv3.
{"copyright_id":"0xf75ddee8dff1d4e1991a9c8609e53b30cc931a7db8512aea2946aa92cf8ecf17","isrc":"FR96X2439518","name":"FURA ESEMÉNYEK","registered_at":"2026-06-04T14:30:34Z","spotify_id":"7FAszqIwMWEN3HManPNUIU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75ddee8dff1d4e1991a9c8609e53b30cc931a7db8512aea2946aa92cf8ecf17. 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/7FAszqIwMWEN3HManPNUIU.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/7FAszqIwMWEN3HManPNUIU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17221f1b208b5b2976a1daea35629cf6168c6133310645c14954315be1e8620. 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/3wQfiLD0Jyqxml3azemORz.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/3wQfiLD0Jyqxml3azemORz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9932558f31e8687d89518eec3d3d661e8e1e880467b6e8dc0146aa91d592328c. 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/5DgCubshOVu7lM5CabJvCB.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/5DgCubshOVu7lM5CabJvCB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d62f06c3e3f2845ad482e19e0660a7d0b99fc7eb386b0ec143dcb58442b7b4. 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/0zAA4LCkftBt802yl9syd4.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/0zAA4LCkftBt802yl9syd4.
{"copyright_id":"0x7e3e69bba6edf21886a3b474cdbb7dbca2670c094595e15c01fc3a2e42f6d006","isrc":"FR96X2439521","name":"GUARDA COME DONDOLO","registered_at":"2026-06-05T14:07:13Z","spotify_id":"1pYsopRthNmgS6AyZFCtKV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3e69bba6edf21886a3b474cdbb7dbca2670c094595e15c01fc3a2e42f6d006. 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/1pYsopRthNmgS6AyZFCtKV.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/1pYsopRthNmgS6AyZFCtKV.
{"copyright_id":"0x5a164e831006d9c586c1a7178b34ec3e1f6caebded876e69f8b4dfd1e0e83220","isrc":"FR2X42436103","name":"HOLNAP MEGÁLLNAK AZ ÓRÁK","registered_at":"2026-06-04T07:52:09Z","spotify_id":"0XUClHXrjQYhATEItePqfT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a164e831006d9c586c1a7178b34ec3e1f6caebded876e69f8b4dfd1e0e83220. 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/0XUClHXrjQYhATEItePqfT.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/0XUClHXrjQYhATEItePqfT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3357b6c7acf41b59fa514700983c7e735663ba2fcd956a3604097fdf24bf7e76. 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/5QhdwVO7BoJoCEPN1ehSVM.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/5QhdwVO7BoJoCEPN1ehSVM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812cb3c8c20134789f8e32f8bc9747fcf7575c2fbacae761a139941fbef12514. 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/7BCheCb8DQ1q7f7Jy7fpFB.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/7BCheCb8DQ1q7f7Jy7fpFB.
{"copyright_id":"0xf061fb6fd603efd067c28e47183e5a103dcbd3a6aed565486ee9fa11255e2c06","isrc":"FR96X2439525","name":"TORINÓI LÓ FREESTYLE","registered_at":"2026-06-05T14:07:23Z","spotify_id":"4ysZ5GdNcKtnoX2shdX2NZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf061fb6fd603efd067c28e47183e5a103dcbd3a6aed565486ee9fa11255e2c06. 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/4ysZ5GdNcKtnoX2shdX2NZ.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/4ysZ5GdNcKtnoX2shdX2NZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e999caf369e314c62e02ead30f25765bcf5deefb8795e15dc700425db716966. 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/1gmRmL0I6z0yT84VV1c5rM.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/1gmRmL0I6z0yT84VV1c5rM.