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 0x32406bbdaa5a16b0aae046c30e40dedd6cc758c250ec69c3fb5fdd955a43c07e. 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/d0f9b10b-5c33-4cd8-b037-205cccb92606.json and https://artists.proofprofile.net/proofs/artist/d0f9b10b-5c33-4cd8-b037-205cccb92606.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 0xe31bed3022fddb93299ba80aa961df8c6265cbb6984312eb431d194cb856635d. 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/1g5CHtsDQl7KVWaUiAwat0.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/1g5CHtsDQl7KVWaUiAwat0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c599d75f6cb619781f0b4282776e6e6e8dafc942718f697cc8709676b53fae. 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/6Bcf5qj1eeHGjSiRc3eD3X.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/6Bcf5qj1eeHGjSiRc3eD3X.
{"copyright_id":"0x8caa046da8af09b1e29a7faf75e51aa9e2f4abb2be7a41b7d8da8967a58eb3b3","isrc":"USUM70610945","name":"When Your Heart Stops Beating","registered_at":"2026-06-02T02:18:53Z","spotify_id":"1VpTwecl7EbQiGyVsvwFQE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8caa046da8af09b1e29a7faf75e51aa9e2f4abb2be7a41b7d8da8967a58eb3b3. 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/1VpTwecl7EbQiGyVsvwFQE.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/1VpTwecl7EbQiGyVsvwFQE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c3f612439e02699ce98b00113a1fe203ff58310dc901be5be599a52aa42cc0. 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/6DtuFURK1wgheRgBVfWz46.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/6DtuFURK1wgheRgBVfWz46.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226773b91dd16fc3a121b3647402165ee3826e507edf49e7d3d5e85f1471b3cb. 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/2cu2BmIxOSDgiSGkmVt795.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/2cu2BmIxOSDgiSGkmVt795.
{"copyright_id":"0xfd951f4132cdabb7db1acc4241de9afc87ff48c57852cea8cf9ea7732646c1f4","isrc":"USUM70609906","name":"Cliff Diving","registered_at":"2026-06-05T23:51:43Z","spotify_id":"4GguA6SbdUbtEZ3FU6muuF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd951f4132cdabb7db1acc4241de9afc87ff48c57852cea8cf9ea7732646c1f4. 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/4GguA6SbdUbtEZ3FU6muuF.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/4GguA6SbdUbtEZ3FU6muuF.
{"copyright_id":"0xbd1ca6df9229cf7a7d70ad7b89493c32f9f654284ebf877c1e2f360a7fe4ac76","isrc":"USUM70614028","name":"Chapter 13","registered_at":"2026-06-05T23:49:24Z","spotify_id":"0iFXanNHxKPcEWHEx8Orow","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1ca6df9229cf7a7d70ad7b89493c32f9f654284ebf877c1e2f360a7fe4ac76. 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/0iFXanNHxKPcEWHEx8Orow.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/0iFXanNHxKPcEWHEx8Orow.
{"copyright_id":"0x8caa046da8af09b1e29a7faf75e51aa9e2f4abb2be7a41b7d8da8967a58eb3b3","isrc":"USUM70610945","name":"When Your Heart Stops Beating","registered_at":"2026-06-02T02:18:51Z","spotify_id":"6yT4ww7r7wDBlwMDUazx0U","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8caa046da8af09b1e29a7faf75e51aa9e2f4abb2be7a41b7d8da8967a58eb3b3. 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/6yT4ww7r7wDBlwMDUazx0U.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/6yT4ww7r7wDBlwMDUazx0U.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c3f612439e02699ce98b00113a1fe203ff58310dc901be5be599a52aa42cc0. 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/00cBOgKqKICOIVlbkIBMgF.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/00cBOgKqKICOIVlbkIBMgF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c20afce2627a0467a7bbc72639633da45779960af34fd97af782a2c89fb99b. 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/6fIwMZ55XLnmgvA5sLS2AF.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/6fIwMZ55XLnmgvA5sLS2AF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226773b91dd16fc3a121b3647402165ee3826e507edf49e7d3d5e85f1471b3cb. 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/4ykk8DYgHyaVJZbakDhKgI.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/4ykk8DYgHyaVJZbakDhKgI.
{"copyright_id":"0xfd951f4132cdabb7db1acc4241de9afc87ff48c57852cea8cf9ea7732646c1f4","isrc":"USUM70609906","name":"Cliff Diving","registered_at":"2026-06-05T23:51:43Z","spotify_id":"2r6RCbk9Czrv0oQB45pAC0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd951f4132cdabb7db1acc4241de9afc87ff48c57852cea8cf9ea7732646c1f4. 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/2r6RCbk9Czrv0oQB45pAC0.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/2r6RCbk9Czrv0oQB45pAC0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f15c2fd3a4076d45a8df3b5482ff8c0b89b827b74d389352cae4ec2448f609. 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/6MG7Cy5ywT5XZcRoSvxnuI.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/6MG7Cy5ywT5XZcRoSvxnuI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b98d6b8172a5b66575253ef66adb5c230a54d4f4984c9f40eed8e3b47ef3af. 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/4KRx0PXHKh3AJIH5GTgeqC.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/4KRx0PXHKh3AJIH5GTgeqC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e8ccce65c402653920b381932a4ee8802e7a4d01d23635ea135980f960c6e8. 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/0jBmahXbyM9L3XLeRw3nKN.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/0jBmahXbyM9L3XLeRw3nKN.
{"copyright_id":"0x81d11cd921bc144951da923710dae9546a2fbd381f3494a49796cd406d1ef336","isrc":"USUM70612323","name":"Baby Come On - Acoustic Version","registered_at":"2026-06-05T10:10:26Z","spotify_id":"1UEYdBcuqHlBtPrZCQxeH9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d11cd921bc144951da923710dae9546a2fbd381f3494a49796cd406d1ef336. 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/1UEYdBcuqHlBtPrZCQxeH9.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/1UEYdBcuqHlBtPrZCQxeH9.
When Your Heart Stops Beating - AOL Music Sessions
{"copyright_id":"0x3bf4a15f02bdab406cebf4f43727bec164555176ff3cb02e228c052100767b80","isrc":"USUM70722011","name":"When Your Heart Stops Beating - AOL Music Sessions","registered_at":"2026-06-10T23:28:09Z","spotify_id":"0375bIlZ2CXv46jA1sUopv","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf4a15f02bdab406cebf4f43727bec164555176ff3cb02e228c052100767b80. 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/0375bIlZ2CXv46jA1sUopv.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/0375bIlZ2CXv46jA1sUopv.
{"copyright_id":"0xfa57209760cc5aa32de96faafd6a8a482300dfacdcbc227b755ff6fbdbc7a5ba","isrc":"USUM70722012","name":"Lycanthrope - AOL Music Sessions","registered_at":"2026-06-18T23:59:59Z","spotify_id":"2S5mUQU9G9DDzSb68D4wkO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa57209760cc5aa32de96faafd6a8a482300dfacdcbc227b755ff6fbdbc7a5ba. 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/2S5mUQU9G9DDzSb68D4wkO.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/2S5mUQU9G9DDzSb68D4wkO.
{"copyright_id":"0xbb3ea7632e560bf5c73e1e016c6aab2e984fe5073f7ff512505c43b36adf39bf","isrc":"USUM70722013","name":"Cliff Diving - AOL Music Sessions","registered_at":"2026-06-20T15:09:37Z","spotify_id":"00ydeLu64m3TtBhG4ADHHt","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3ea7632e560bf5c73e1e016c6aab2e984fe5073f7ff512505c43b36adf39bf. 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/00ydeLu64m3TtBhG4ADHHt.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/00ydeLu64m3TtBhG4ADHHt.
{"copyright_id":"0x7fbc3204227633f432f1f0ad23b9a5a7002217adac47aa33b372859c42972e0f","isrc":"USUM70700987","name":"Baby Come On - AOL Music Sessions","registered_at":"2026-06-11T22:16:09Z","spotify_id":"4mlaCHQaTCjQNmUNXp2A3u","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbc3204227633f432f1f0ad23b9a5a7002217adac47aa33b372859c42972e0f. 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/4mlaCHQaTCjQNmUNXp2A3u.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/4mlaCHQaTCjQNmUNXp2A3u.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c20afce2627a0467a7bbc72639633da45779960af34fd97af782a2c89fb99b. 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/5pdLRgCDtInhmyCko3PX62.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/5pdLRgCDtInhmyCko3PX62.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b98d6b8172a5b66575253ef66adb5c230a54d4f4984c9f40eed8e3b47ef3af. 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/4isP4utvgJyHHp1iYOAMQQ.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/4isP4utvgJyHHp1iYOAMQQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e8ccce65c402653920b381932a4ee8802e7a4d01d23635ea135980f960c6e8. 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/64ojb7llTMzvdkHdbIpq3y.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/64ojb7llTMzvdkHdbIpq3y.