1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b81c8b676369d71f5414139526ccd96208aadfa4e79d3e31263c90a10b62f5d. 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/dd91fc79-a858-453f-bfd8-0236b011606a.json and https://artists.proofprofile.net/proofs/artist/dd91fc79-a858-453f-bfd8-0236b011606a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8250c0a82d946cd58b921ce3b9a13c26d058b4dd1a4006f9e4485c35779ccf. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:10:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXAKV1900061.
Lágrimas de Chuva (Zenitsu Demon Slayer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a45ed28b92c1481a6d251ea7291e693272e3c771069025fea16b721a975bb38. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXAKV1900065.
Benção ou Maldição (Itadori X Sukuna Jujutsu Kaisen)
O Meu Olhar (Satoru Gojo Jujutsu Kaisen)
Coração Congelado (Thorfinn Vinland Saga)
Quando a Guitarra Tocar (Eddie Stranger Things)
Verdadeiro Pesadelo (Vecna Stranger Things)
Aliança Amaldiçoada (Yuta Jujutsu Kaisen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f50a9230d6a15007f92a889768413e51834b1d13d5f8047afbbe96b3f385be. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB32201308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0a23ca657d2478ed2c356c79a82a089deee7ed3576bb180b753249d78096f5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYZ2372480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c0f7d2dd7a4d6c4e4b76174997cbec65433275fd315410dba83ec02060a90a. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:57:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYZ2396873.
Vou Quebrar as Correntes (Chigiri Blue Lock)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe307bb60969d78794deb83077175894b79e227da8b3269efbd58b027281e0527. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ72359126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f01b671126e775973ac2b3fc17396b7b8f0aceec59da6254c23d9bdce3e83c. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN82337731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609ec5e76c6a943fe64a7accaab780fcdcfad8ba6b5fc779c3553ca0b21e65c9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNC2369538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3e15141ed77dcfd2c1567df882a9d7534015848afd1ce0ba3aa8a1147d3421. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6M2367522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f196ef78a5a8685fa4520087c5318de16f09bab6fc896be81dc76b34efd3002. Chain 2 (Bitcoin): anchored in block 957895 (2026-07-13T18:41:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2327730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2de2c95171ce0b3ae75a09fbba2fa10c4eb1fd102a1bed74ae8d714c5b45d0e. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:49:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2373205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8430db440899247ba9524c2d5aebefe27f4bbc2d1dd880e7124d74e9fcd649. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6H2328729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b6d8f9464f19fa999f872efd71786e1cce28ce887e5ac00772315246334313. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:38:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMER2357142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc654c454fe0b92e9665cdfe4769579dd0de1a6c3157c07692507d92fcc7564fe. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:51:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWS2385709.
Teias Que Me Levam a Você (Miles & Gwen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc920500a07755ae9eeb8c792ac03c02376917a81c746e7b4877dbe453d67fd1f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFQ2328164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a60d6f29be98a2def03bbbe6317756743b0ee76509c7f54fd36ff13be5a9906. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYY2459888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c7b39249f0b6beb8add1af76b5200018a6b8935f4af9f616408cd91301363e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ22456281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0412a7ec2103b7b07b0f5e3398a38228edff2fe9fe690dc2a7899abf31760f44. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ32463117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7878da432421fc9087a3b670363c198d84a67ea409b20d84a867f25a75e4dcd9. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA52428126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b942f277db5a8536f666a97394b6b05b4d0f8ee55d7a5aebda0c9fe5149d5da. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES72463555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2862c2b991065136574fcc2541413c3b59e0627c1aed6dc621644850ecae3a6c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32435733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42a6b4651477c42344c534f0e33581cffa95eb3895ca9e3154659ef550b7f1b. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN52409912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7941228224a41638ba672d80cfa20fcbf5c1dbe193d7f94fd386f05b1dfaf1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN92415239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44bf25883afd77f01b87f30d79ef17ce4a65ce4a94478f3369235c869c93af9c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNB2425232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4508166dd614beb221048932e5131aea329b50020d22a93a46369ad59bb7474. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:57:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNC2438007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2534b9ddd2edab086060afe334d5f308a894238ceb8a0dc054b1a22243dddfea. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6P2446017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d216134682020535b6432bb520fe056d4b950e68d1d50aa48eba913271376d8. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2481957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7bc273b993616a65d453b2f5fc53287ee316b207e033ecb7801d7557af157b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAU2475896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4ca986073413213d40c92f450aab911145c77582a44331cbb53907ed2aa57f. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFM2498861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdb635d3fe0badf32350c10b6f4cdc15dff58e3a8256ce1d124f2a5f6650c37. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3F32440609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a9e3aa89ce40490a8916b54a37e4d44a40c5cf227c62b38647bb115e5b9d99. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:47:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXAKV2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14835826d80999a80da47cacffe9c9b82d38b5a2a2b9d025b803e5fadf70988. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWU2571457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4979b1ec9167d54d43c304c94280f568b776f38b5bfd68f240106bb76fd10a27. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAT2528384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8004c366015d2afa2ba9e4ceec04a8d34cf785ecbbcca0284f15d8aced7cf0ea. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBA2528187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38ee451dd0c1da9607df0be0a558cedea30ba7e7e1aa30fc52a15906ca7c0b7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXAKV2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480297c0ca13ecedbb7c00445c1ce17a6f1f4b09cfe41021a03b45a5622d9096. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ662351351.