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 0x776412acb424a0c9d2fb55b8e1e1ae6ca2d6f8a1d6c3a45e491465e326cd071d. 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/6dc06413-c2f4-4810-ade5-9b5d35e763f5.json and https://artists.proofprofile.net/proofs/artist/6dc06413-c2f4-4810-ade5-9b5d35e763f5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x2edda97bd8474b6c68e69bc9ee50a9c6b049dd98319184947999fd2af53fe965","isrc":"QZTPX2456365","name":"Se Armo el Kilombo","registered_at":"2026-06-23T08:30:37Z","spotify_id":"4kYVDG5zeWvQSkN39ypfMM","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 0x2edda97bd8474b6c68e69bc9ee50a9c6b049dd98319184947999fd2af53fe965. 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/4kYVDG5zeWvQSkN39ypfMM.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/4kYVDG5zeWvQSkN39ypfMM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe1be387a097ed0ffc8e742fe4fc44fddf0866c3c969e524ad712ad9a1c72ef. 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/7dsvR0abantsgKK6pmoh8o.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/7dsvR0abantsgKK6pmoh8o.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b85c7fb8d2ae39f7dd61e866770169438ce3a0a286648a25ab299b1288286b. 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/5d5UGXugIvH4iN7EGD7m9s.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/5d5UGXugIvH4iN7EGD7m9s.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d52c27bd274cb79689c39093c804081bb05a444b0a623e78b064b95afd2e0c6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1K8bFkwm860SlPePgMT3DK.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/1K8bFkwm860SlPePgMT3DK.
Rap Chileno el Sur Es Hardcore Godlevel Enfermos del Rap
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fc0954599c19e57a7fdca7c9a99c242be8eb222f5368256700bfdd98d70720. 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/1WiDJ9qyX9y7gROMw7MmmK.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/1WiDJ9qyX9y7gROMw7MmmK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3a48d6cd1daf145413175fbc599bfe61b68851ae1e0204520beebf8709e0b9. 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/2ZaRW73J8um4y6LiCHeP3e.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/2ZaRW73J8um4y6LiCHeP3e.
{"copyright_id":"0x636b5518e2165848e3488700598a98f3bfe7b26412aa5d99dc6098eb36738586","isrc":"TCACH1535406","name":"El Sur Es Hardcore - Estaba Escrito","registered_at":"2026-06-08T02:19:19Z","spotify_id":"0EJGA2LpIryPpw0KPriIEq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636b5518e2165848e3488700598a98f3bfe7b26412aa5d99dc6098eb36738586. 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/0EJGA2LpIryPpw0KPriIEq.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/0EJGA2LpIryPpw0KPriIEq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e6339e5f9aba52922d4ee07f792a4137eed2544e12257406ee1df3ad553381. 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/34PjuznI1FNg2OPZ4wGxoh.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/34PjuznI1FNg2OPZ4wGxoh.
{"copyright_id":"0xec6e3e8f6266d1812b153b85a129c554b95de4bd23a8f128fa99b69bb8fd3826","isrc":"TCACH1535379","name":"El Sur Es Hardcore Mas Hardcore","registered_at":"2026-06-08T09:58:34Z","spotify_id":"039aMcD5aljCAkgqoXDl02","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6e3e8f6266d1812b153b85a129c554b95de4bd23a8f128fa99b69bb8fd3826. 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/039aMcD5aljCAkgqoXDl02.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/039aMcD5aljCAkgqoXDl02.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa393478cfd9c92e5d940d901fb723932e31a950ea4755b85aa0ffd51400bf2e4. 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/5kC4fe8zzkP1WjCb6Pp1Bh.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/5kC4fe8zzkP1WjCb6Pp1Bh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa70bca49ca8df551f4475103564998c621168e8b34fc655fb68344e07a27d96. 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/1AsnD0ZXIRkZ4cYuM362oD.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/1AsnD0ZXIRkZ4cYuM362oD.
El Sur Es Hardcore la Venganza de los Mcs
{"copyright_id":"0xcea217c0a75ff5f5fea89e014c7b495b69935b8671b96f3d588b0764b42232dd","isrc":"TCACH1535383","name":"El Sur Es Hardcore la Venganza de los Mcs","registered_at":"2026-06-09T16:19:02Z","spotify_id":"4RmWpiiKb9J6cnaHrEtlbg","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea217c0a75ff5f5fea89e014c7b495b69935b8671b96f3d588b0764b42232dd. 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/4RmWpiiKb9J6cnaHrEtlbg.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/4RmWpiiKb9J6cnaHrEtlbg.
Enfermos del Rap la Enfermedad Se Propaga
{"copyright_id":"0xc6f1c0a1a7df50aed863285472b5d3095c10c9503b0067e7351c361efe8d0bcc","isrc":"TCACH1535411","name":"Enfermos del Rap la Enfermedad Se Propaga","registered_at":"2026-06-10T02:23:51Z","spotify_id":"2ARvKi1vTelwz9DcuUmkHn","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f1c0a1a7df50aed863285472b5d3095c10c9503b0067e7351c361efe8d0bcc. 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/2ARvKi1vTelwz9DcuUmkHn.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/2ARvKi1vTelwz9DcuUmkHn.
{"copyright_id":"0xa8fb45f634e8ddc27eee601a9a7ce8e98c934714f7a1c9109659aa33e482a8d2","isrc":"TCACH1535409","name":"Enfermos del Rap 1","registered_at":"2026-06-18T11:28:26Z","spotify_id":"34UtB5v1m5ydcTDZItoqPT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8fb45f634e8ddc27eee601a9a7ce8e98c934714f7a1c9109659aa33e482a8d2. 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/34UtB5v1m5ydcTDZItoqPT.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/34UtB5v1m5ydcTDZItoqPT.
{"copyright_id":"0x8ba09c629c0e34df66c16c378e47ffae7963cfe1698a0df87349d51a3f320cfe","isrc":"TCACH1535390","name":"Enfermos del Rap - La Pandemia","registered_at":"2026-06-20T03:28:25Z","spotify_id":"6uBPX8qLZ23QFz5q7fSnEd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba09c629c0e34df66c16c378e47ffae7963cfe1698a0df87349d51a3f320cfe. 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/6uBPX8qLZ23QFz5q7fSnEd.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/6uBPX8qLZ23QFz5q7fSnEd.
{"copyright_id":"0x4d2f6d22821d3c416a900dc231a712447797b67dd0b18b8a1109e7ee1b3b837d","isrc":"TCACH1535412","name":"Enfermos del Rap el Antidoto 2015","registered_at":"2026-06-25T16:56:48Z","spotify_id":"6VnzvUdrXb5VfhkzvDM99C","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2f6d22821d3c416a900dc231a712447797b67dd0b18b8a1109e7ee1b3b837d. 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/6VnzvUdrXb5VfhkzvDM99C.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/6VnzvUdrXb5VfhkzvDM99C.