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 0xed5da580cd155c07b2d7e1da642bb43cd542785c796c81b7216ce2866ccf93d4. 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/48878e6e-7ed9-43aa-9719-f3a6570bdf09.json and https://artists.proofprofile.net/proofs/artist/48878e6e-7ed9-43aa-9719-f3a6570bdf09.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 0x2864d9bd9830a44e2d3e4891b13e718a294b31c5ff0c95dc8745aa8f43e5bd90. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2ojMgcBQgUaU9agFMV44xf.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/2ojMgcBQgUaU9agFMV44xf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f2bae68b3a79bb475851394001ca3b92ee4d5a30043d22ffc239d727aaaa72. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5hdtMQGUOJqc2pnBXQA6xs.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/5hdtMQGUOJqc2pnBXQA6xs.
{"copyright_id":"0x2136c4d86d00c143524cb6c0d7ee9853cecdcff00a7d4c7c63a77ac1acda5f6b","isrc":"DEGA21702285","name":"Everyone Needs","registered_at":"2026-06-22T22:32:57Z","spotify_id":"1ROsSld6PWD7CDDNgcwum0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2136c4d86d00c143524cb6c0d7ee9853cecdcff00a7d4c7c63a77ac1acda5f6b. 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/1ROsSld6PWD7CDDNgcwum0.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/1ROsSld6PWD7CDDNgcwum0.
{"copyright_id":"0xcfac82d1de55f9f761d47419163ec57b772c6472abf6b2f292add0d4a16e546c","isrc":"USQY51769223","name":"Soul Recover","registered_at":"2026-06-28T22:22:23Z","spotify_id":"5rcwKAQ6rNMfVP2UDpDW86","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfac82d1de55f9f761d47419163ec57b772c6472abf6b2f292add0d4a16e546c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5rcwKAQ6rNMfVP2UDpDW86.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/5rcwKAQ6rNMfVP2UDpDW86.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac13297b243fdb712f9b8d2b7b12aa307cdc39726d8219d9d74f4de3ad658aca. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/70vPynHXO5F1BdwVXrK04L.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/70vPynHXO5F1BdwVXrK04L.
{"copyright_id":"0x8e17be6cb1e8c65bdf6c83247ddc7800ca99437af36f0cd9c5631f2252e6e99a","isrc":"UKR6V2091095","name":"You Make Me Feel - Radio Version","registered_at":"2026-06-05T07:51:04Z","spotify_id":"3HfNwsFZJZG264FxqQt78N","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e17be6cb1e8c65bdf6c83247ddc7800ca99437af36f0cd9c5631f2252e6e99a. 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/3HfNwsFZJZG264FxqQt78N.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/3HfNwsFZJZG264FxqQt78N.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28fc942cb56490248fba4ce20aa3f87635a6849e6c64200c358e4810f0a5626. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3Tlkqp2Oghur2oJRmUWRTI.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/3Tlkqp2Oghur2oJRmUWRTI.
{"copyright_id":"0x33407c917b24c8f44f0b3076e12aee7c3e7e399ccbe2973e40df6ce01813db64","isrc":"UKR6V2190940","name":"Two of Us - RQntz Remix","registered_at":"2026-06-26T16:16:55Z","spotify_id":"1PhQuavVO0ZdunvSuOLcPl","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33407c917b24c8f44f0b3076e12aee7c3e7e399ccbe2973e40df6ce01813db64. 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/1PhQuavVO0ZdunvSuOLcPl.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/1PhQuavVO0ZdunvSuOLcPl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ad047069f675fb1c85eff17935692da4c34f024c98e0639f77156e25ebcb49. 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/2TYVNacoYbCfLUaQSklTQz.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/2TYVNacoYbCfLUaQSklTQz.
{"copyright_id":"0x0a6792abfc1cf978daee284d0d35bb2a792f048cda147c023fba68ebef992243","isrc":"UKR6V2290773","name":"Other Days","registered_at":"2026-06-06T16:09:51Z","spotify_id":"3fShZcL2jCLVvefM2Hy8mL","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6792abfc1cf978daee284d0d35bb2a792f048cda147c023fba68ebef992243. 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/3fShZcL2jCLVvefM2Hy8mL.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/3fShZcL2jCLVvefM2Hy8mL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8038da23b9f94fe953b98d3e0b20623b1ab461b7ed1e3382847d04a0071de644. 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/740kF9XDucVbxCpEohMlrd.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/740kF9XDucVbxCpEohMlrd.
{"copyright_id":"0x29c9161d4218a62aa3a72a819f10a232d92fed7f0864c02d7cd45e73f93e593b","isrc":"UKR6V2190502","name":"Falling - Extended Mix","registered_at":"2026-06-08T09:47:25Z","spotify_id":"1495VZybMxtmlvcoqxGkzF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c9161d4218a62aa3a72a819f10a232d92fed7f0864c02d7cd45e73f93e593b. 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/1495VZybMxtmlvcoqxGkzF.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/1495VZybMxtmlvcoqxGkzF.
{"copyright_id":"0x6033fe854670ea22664eb43bd035fb6fe5bd58f7ced0d51646b6241f1b4a591a","isrc":"UKR6V2091096","name":"You Make Me Feel - Extended Mix","registered_at":"2026-06-10T02:16:26Z","spotify_id":"56q8GX7j8oLOrmOoFoU0np","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6033fe854670ea22664eb43bd035fb6fe5bd58f7ced0d51646b6241f1b4a591a. 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/56q8GX7j8oLOrmOoFoU0np.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/56q8GX7j8oLOrmOoFoU0np.
Lightning - Ghost Rider & Ranji Remix Extended
{"copyright_id":"0xfc74477da50dda7729741bb3a23036d25ba91047b9dc6fa15c64e861b5ed5e4a","isrc":"UKR6V2092414","name":"Lightning - Ghost Rider & Ranji Remix Extended","registered_at":"2026-06-06T22:38:11Z","spotify_id":"4sV9LzAX3UhzqCLUPPGmjl","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc74477da50dda7729741bb3a23036d25ba91047b9dc6fa15c64e861b5ed5e4a. 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/4sV9LzAX3UhzqCLUPPGmjl.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/4sV9LzAX3UhzqCLUPPGmjl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7ce62dd911eb5eee4dd8d570ed047d1d23d09257236995ee94c39b75293098. 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/2XY4YS7zHiDJThdU7C0nXA.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/2XY4YS7zHiDJThdU7C0nXA.
{"copyright_id":"0xa56406fe626c707cf9b7bff8341d7e71dde3f3b30943e69ab9d96a6ce0bf6dff","isrc":"UKR6V2093079","name":"Only One - Extended Mix","registered_at":"2026-06-08T10:52:00Z","spotify_id":"6KqNIARfp0Gb1XTXfAEkPj","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56406fe626c707cf9b7bff8341d7e71dde3f3b30943e69ab9d96a6ce0bf6dff. 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/6KqNIARfp0Gb1XTXfAEkPj.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/6KqNIARfp0Gb1XTXfAEkPj.
{"copyright_id":"0x8b549521cee4461557b413572428aaa76bc5e3fb2048586c291ac9faf1a6c26c","isrc":"UKR6V2192638","name":"Your Secrets - Extended Mix","registered_at":"2026-06-18T13:07:45Z","spotify_id":"32xY6pFhixiEZTqFdaSMml","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b549521cee4461557b413572428aaa76bc5e3fb2048586c291ac9faf1a6c26c. 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/32xY6pFhixiEZTqFdaSMml.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/32xY6pFhixiEZTqFdaSMml.
{"copyright_id":"0x9dee7de97552250ed9cefec0aa4bdba756199d6990518ef0b1f4b4262ee46f1e","isrc":"UKR6V2091343","name":"Two of Us - Extended Mix","registered_at":"2026-06-16T21:01:44Z","spotify_id":"23iCKDdhqM5soqMCHDOlyN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dee7de97552250ed9cefec0aa4bdba756199d6990518ef0b1f4b4262ee46f1e. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T20:26:21Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/23iCKDdhqM5soqMCHDOlyN.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/23iCKDdhqM5soqMCHDOlyN.
{"copyright_id":"0xaeaeaac1b51f25219fe6c2ca7b52615a8bf0db1cde57b0e94249a13bdce71e67","isrc":"DEKC42200074","name":"Crossroads (Remix)","registered_at":"2026-06-05T15:49:36Z","spotify_id":"5pBEiBE1cCShb5fDt8973h","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeaeaac1b51f25219fe6c2ca7b52615a8bf0db1cde57b0e94249a13bdce71e67. 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/5pBEiBE1cCShb5fDt8973h.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/5pBEiBE1cCShb5fDt8973h.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117ed989dc814ad95257dcd161f5b386d6f2f749dc60bc1becd8b2267d5d3eda. 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/1ByDpB74IdT3QvnrHuMxxK.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/1ByDpB74IdT3QvnrHuMxxK.
{"copyright_id":"0xe57c22b45ef05ad73e1e9689c6f12deee777e4b0f6a2e8b4f9ef581474dbf7e1","isrc":"DEKC42300035","name":"There Was A Time (Ghost Rider Remix)","registered_at":"2026-06-05T20:49:13Z","spotify_id":"4ug5ZCoAH5MFFvVqGfdi4n","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57c22b45ef05ad73e1e9689c6f12deee777e4b0f6a2e8b4f9ef581474dbf7e1. 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/4ug5ZCoAH5MFFvVqGfdi4n.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/4ug5ZCoAH5MFFvVqGfdi4n.
{"copyright_id":"0x643d078c9f788c3b799996a64e5d805a7faeda99e6bdcefe7940e33406b9beb8","isrc":"DEKC42300001","name":"Here Is Your Song","registered_at":"2026-06-04T09:22:28Z","spotify_id":"65Md1g0jQ6bOey7rUGmMOX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643d078c9f788c3b799996a64e5d805a7faeda99e6bdcefe7940e33406b9beb8. 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/65Md1g0jQ6bOey7rUGmMOX.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/65Md1g0jQ6bOey7rUGmMOX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa038c44313e46fe67f25be33d0d13d3c4e980068728ebaf3f1395215416d48d9. 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/6d1AuFOL1YBzLcruapNbZV.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/6d1AuFOL1YBzLcruapNbZV.