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 0x65936600a332e73e2b955d17c979518dff121c069ab9090e6c15f1dbb2a40cf1. 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/e16a1468-3728-4ef4-a892-36637df161ae.json and https://artists.proofprofile.net/proofs/artist/e16a1468-3728-4ef4-a892-36637df161ae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xe124fe712b94eceac70ab262722675bc1e0e0d73b1b1312688b29c1007fedfa8","isrc":"CA5KR2169934","name":"Lurkin (feat. Polo G) - Remix","registered_at":"2026-06-04T04:36:34Z","spotify_id":"777evZve3OzCbGOVaVAGiU","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 0xe124fe712b94eceac70ab262722675bc1e0e0d73b1b1312688b29c1007fedfa8. 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/777evZve3OzCbGOVaVAGiU.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/777evZve3OzCbGOVaVAGiU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791e36167c895f60455621836643094356d48a3b40e7451519b3b7d59d4c6e74. 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/1hXFmRJcLVmp1rRMwzgnKE.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/1hXFmRJcLVmp1rRMwzgnKE.
{"copyright_id":"0x5e5cd894e24d024fcc1e36fe5539d97eadbe81db142393193cb43937adbae48a","isrc":"CA5KR2243123","name":"Hitta (feat. Bobby Shmurda)","registered_at":"2026-06-09T17:25:45Z","spotify_id":"4kTdlruEELvYnvMX6XotML","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5cd894e24d024fcc1e36fe5539d97eadbe81db142393193cb43937adbae48a. 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/4kTdlruEELvYnvMX6XotML.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/4kTdlruEELvYnvMX6XotML.
{"copyright_id":"0xaf173be1732ff41aa59fadf18add2b8ec8ce13eda3ce627852162994df204ada","isrc":"CA5KR2142520","name":"Damn Shame","registered_at":"2026-06-05T08:35:24Z","spotify_id":"7ETKvvR97gJ28mAiOJoFD4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf173be1732ff41aa59fadf18add2b8ec8ce13eda3ce627852162994df204ada. 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/7ETKvvR97gJ28mAiOJoFD4.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/7ETKvvR97gJ28mAiOJoFD4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32909aac09a67eea457cfdf87222dd37ae79752ace32aa53f85d49e85832c4d3. 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/1ioaV68BICIiSHpcqSUVHR.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/1ioaV68BICIiSHpcqSUVHR.
The Champions (feat. Doo Wop, Tony Touch, DJ Clue, Funkmaster Flex, S&S, Brucie B, Kid Capri & Ron G)
{"copyright_id":"0xfdcf1000f0ffeb1c92eae8e794a2b5450406aaae1b80fe99565dcf846286b036","isrc":"USSM10214061","name":"The Champions (feat. Doo Wop, Tony Touch, DJ Clue, Funkmaster Flex, S&S, Brucie B, Kid Capri & Ron G)","registered_at":"2026-06-22T23:00:05Z","spotify_id":"4DyTAPDsyDiTTOot3XaACv","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdcf1000f0ffeb1c92eae8e794a2b5450406aaae1b80fe99565dcf846286b036. 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/4DyTAPDsyDiTTOot3XaACv.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/4DyTAPDsyDiTTOot3XaACv.
Nervous Reanimated (Nervous Records Presents)
{"copyright_id":"0xccd80c72f39aaf95d6da505da7d8da12219fd5a62c77c1bd2334c978605787ce","isrc":"USNRS0020155","name":"Nuttin' But Flavor - Vocal Mix","registered_at":"2026-06-21T23:23:40Z","spotify_id":"5Yr3YYbsUApLG1ij0ucSra","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd80c72f39aaf95d6da505da7d8da12219fd5a62c77c1bd2334c978605787ce. 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/5Yr3YYbsUApLG1ij0ucSra.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/5Yr3YYbsUApLG1ij0ucSra.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5564ad1be081bfb47f7f75951e8e04b59ebc5833962014076a442fcfc94338b2. 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/6m61m1WKlxCOEuTFpBtTRb.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/6m61m1WKlxCOEuTFpBtTRb.
Biggie/Tupac Live Freestyle (Funkmaster Flex & Big Kap Feat. DJ Mister Cee, Notorious B.I.G & Tupac)
{"copyright_id":"0x0867ddc71c0ea9ead879727c20ad85fb42ca687339723f3d36a2d2ecd93e3511","isrc":"USDJ29905252","name":"Biggie/Tupac Live Freestyle (Funkmaster Flex & Big Kap Feat. DJ Mister Cee, Notorious B.I.G & Tupac)","registered_at":"2026-06-04T07:29:13Z","spotify_id":"2FjvG9IQg242g2LEornfjy","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0867ddc71c0ea9ead879727c20ad85fb42ca687339723f3d36a2d2ecd93e3511. 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/2FjvG9IQg242g2LEornfjy.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/2FjvG9IQg242g2LEornfjy.
We In Here (Funkmaster Flex & Big Kap Feat. The Ruff Ryders [DMX, Eve, The Lox, Swizz Beatz and Drag-On]
{"copyright_id":"0x47b3fae5a9d9fc54cdc5112b699ab0a29fbaca20273f2815b8bdf2b1aede5dc4","isrc":"USDJ29905266","name":"We In Here (Funkmaster Flex & Big Kap Feat. The Ruff Ryders [DMX, Eve, The Lox, Swizz Beatz and Drag-On]","registered_at":"2026-06-10T02:05:57Z","spotify_id":"6JKsM3QtDsod8IXTuyR7zn","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b3fae5a9d9fc54cdc5112b699ab0a29fbaca20273f2815b8bdf2b1aede5dc4. 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/6JKsM3QtDsod8IXTuyR7zn.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/6JKsM3QtDsod8IXTuyR7zn.
If I Get Locked Up (Funkmaster Flex & Big Kap Feat. Eminem and Dr. Dre)
{"copyright_id":"0x6e11bb0587eb4ead7ee2311473490d1afda7378486ea3f424e3e99f1a31e5eb2","isrc":"USDJ29905258","name":"If I Get Locked Up (Funkmaster Flex & Big Kap Feat. Eminem and Dr. Dre)","registered_at":"2026-06-04T11:58:14Z","spotify_id":"2nd0a9U9ICncohQPtjtVey","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e11bb0587eb4ead7ee2311473490d1afda7378486ea3f424e3e99f1a31e5eb2. 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/2nd0a9U9ICncohQPtjtVey.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/2nd0a9U9ICncohQPtjtVey.
Real G's (Funkmaster Flex & Big Kap Feat. Snoop Dogg)
{"copyright_id":"0x207693610df99b695712a90173d82ad50c892eb8dffea23d30a18038c42b176a","isrc":"USDJ29905262","name":"Real G's (Funkmaster Flex & Big Kap Feat. Snoop Dogg)","registered_at":"2026-06-09T15:41:16Z","spotify_id":"1sIUXFdmldGmo5Wky018J5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207693610df99b695712a90173d82ad50c892eb8dffea23d30a18038c42b176a. 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/1sIUXFdmldGmo5Wky018J5.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/1sIUXFdmldGmo5Wky018J5.
True (Funkmaster Flex & Big Kap Feat. Method Man)
{"copyright_id":"0xaad497396eccb454d9573e33ac6f7f2e72d41a6fc870cbac3dca741115d7fc68","isrc":"USDJ29905270","name":"True (Funkmaster Flex & Big Kap Feat. Method Man)","registered_at":"2026-06-10T15:33:33Z","spotify_id":"1kEIO3pOKxBL5YmbVi66DG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad497396eccb454d9573e33ac6f7f2e72d41a6fc870cbac3dca741115d7fc68. 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/1kEIO3pOKxBL5YmbVi66DG.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/1kEIO3pOKxBL5YmbVi66DG.
QBG (Funkmaster Flex & Big Kap Feat. Prodigy and Kool G Rap)
{"copyright_id":"0xedf51d35bec22dacdfc1d9dbf9b166045bf9b65d98998ca8ff0ad7e7fae48412","isrc":"USDJ29905272","name":"QBG (Funkmaster Flex & Big Kap Feat. Prodigy and Kool G Rap)","registered_at":"2026-06-09T06:07:44Z","spotify_id":"3ZDKB3zMzBNgHdoWipNSQH","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf51d35bec22dacdfc1d9dbf9b166045bf9b65d98998ca8ff0ad7e7fae48412. 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/3ZDKB3zMzBNgHdoWipNSQH.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/3ZDKB3zMzBNgHdoWipNSQH.
K.I.M. (Funkmaster Flex & Big Kap Feat. Lil' Kim)
{"copyright_id":"0x76556b966501e18e2cd92f9d27d1bb052360e9d019f743f3d23b986b3097e64f","isrc":"USDJ29905274","name":"K.I.M. (Funkmaster Flex & Big Kap Feat. Lil' Kim)","registered_at":"2026-06-21T19:55:10Z","spotify_id":"3eS5DdMQ5DOI9YNawHeTPy","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76556b966501e18e2cd92f9d27d1bb052360e9d019f743f3d23b986b3097e64f. 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/3eS5DdMQ5DOI9YNawHeTPy.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/3eS5DdMQ5DOI9YNawHeTPy.