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 0x549e19b83cdd1e60a5a194d46d3a947006e67905f3a77934d78c06fe097c660f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cc007a20-a8b9-40b2-b668-ca675316ccd4.json and https://artists.proofprofile.net/proofs/artist/cc007a20-a8b9-40b2-b668-ca675316ccd4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x0d89efafe7b57dc6145c25f0b2e157f9f043501dcbd8c1de250adbbb0da139c4","isrc":"QZK6F2442772","name":"hate the world without u (maddy's song)","registered_at":"2026-06-08T22:26:46Z","spotify_id":"7A0KAzWpuNphmvXz7uIJ38","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 0x0d89efafe7b57dc6145c25f0b2e157f9f043501dcbd8c1de250adbbb0da139c4. 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/7A0KAzWpuNphmvXz7uIJ38.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/7A0KAzWpuNphmvXz7uIJ38.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4d92afecd4d9aa6f702770c66772d0cac2d76ff8a9097268366a081c9535e3. 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/26eDo2OVYHqLjpyhJI5A9p.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/26eDo2OVYHqLjpyhJI5A9p.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8426092848d286cb1fe98812bd72cdafdcaef36010f611201fe36279b4af5f8. 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/6Ay5BDFbz3YjTl398lZ6D2.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/6Ay5BDFbz3YjTl398lZ6D2.
{"copyright_id":"0x28e425fa39428882284a27dbeabaf5bb40839626754aef2dbe5a0474e1051129","isrc":"QMFME2352334","name":"BIG GIRLS DON'T CRY - workout mix","registered_at":"2026-06-25T20:36:32Z","spotify_id":"3RmkmVtJWovrPaspaSyXyM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e425fa39428882284a27dbeabaf5bb40839626754aef2dbe5a0474e1051129. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3RmkmVtJWovrPaspaSyXyM.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/3RmkmVtJWovrPaspaSyXyM.
{"copyright_id":"0xa83aecd6dbd02edf32cd6d23719c5a6582eb3ce0fcea24ac46ab85f7f853adb9","isrc":"QMFME2352328","name":"BIG GIRLS DON'T CRY - Piano Diaries","registered_at":"2026-06-06T03:22:15Z","spotify_id":"7FfVgAqQRPdPTn9uv9ndrN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83aecd6dbd02edf32cd6d23719c5a6582eb3ce0fcea24ac46ab85f7f853adb9. 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/7FfVgAqQRPdPTn9uv9ndrN.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/7FfVgAqQRPdPTn9uv9ndrN.
{"copyright_id":"0x276679aabfacada0503430b88c9a468abbc6eafc56f4ea0510bee6900037304a","isrc":"QMFME2352332","name":"BIG GIRLS DON'T CRY - euphoric mix","registered_at":"2026-06-24T12:36:57Z","spotify_id":"0EK65PzZtUgsxMioZdhekM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276679aabfacada0503430b88c9a468abbc6eafc56f4ea0510bee6900037304a. 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/0EK65PzZtUgsxMioZdhekM.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/0EK65PzZtUgsxMioZdhekM.
{"copyright_id":"0x98a1a9558b8e76604f38dc7d18f5f692ee79d855f2b3501d747d114951fe4bd8","isrc":"QMFME2352343","name":"BIG GIRLS DON'T CRY - bachata mix","registered_at":"2026-06-09T07:26:32Z","spotify_id":"2nh3gtdmGKD2TrDlzAxySK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a1a9558b8e76604f38dc7d18f5f692ee79d855f2b3501d747d114951fe4bd8. 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/2nh3gtdmGKD2TrDlzAxySK.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/2nh3gtdmGKD2TrDlzAxySK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87666ac99c0273a2e623b382474bbeed5f1d8d916df031397730a6bb4e47f864. 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/0EtB7fYNkjYB4HsmqtHTPm.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/0EtB7fYNkjYB4HsmqtHTPm.
{"copyright_id":"0xf656115bcf26dd9a30664e513b078d690a5dd5f3993d54113fe0d33d2b496cde","isrc":"QZDA42305798","name":"Last Man Standing","registered_at":"2026-06-07T14:59:45Z","spotify_id":"6Px4zAZ9RrIVVkn7gbFeau","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf656115bcf26dd9a30664e513b078d690a5dd5f3993d54113fe0d33d2b496cde. 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/6Px4zAZ9RrIVVkn7gbFeau.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/6Px4zAZ9RrIVVkn7gbFeau.
Afterlife of the Party (Music from the Netflix Film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda03c0d87221b3de3885cd704fbdcbcb5568267a945c0075e832f42412af097. 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/1ojuEKYtIcXDbr5KmuM9Yv.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/1ojuEKYtIcXDbr5KmuM9Yv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53cc03034197fdddb61ad33444615fa32961a9f18db0a9ef842d2169fba573e. 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/7KRZQ2vnwfMSHn6gsPAcFC.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/7KRZQ2vnwfMSHn6gsPAcFC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74bed4a3d1eac0ec41c41be74078404549cbcdde8c96e3acd42085caff53227. 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/6HfHAnU4MARVwrRdL5ATyu.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/6HfHAnU4MARVwrRdL5ATyu.
{"copyright_id":"0x4416ffbac42efa88f191cd70e78141dcccd428db517d40109dda9fd9815c4510","isrc":"QZ8BZ2100574","name":"One Look","registered_at":"2026-06-06T11:55:54Z","spotify_id":"0bfAhLFEotkSmMISfK4lIQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4416ffbac42efa88f191cd70e78141dcccd428db517d40109dda9fd9815c4510. 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/0bfAhLFEotkSmMISfK4lIQ.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/0bfAhLFEotkSmMISfK4lIQ.
{"copyright_id":"0x4b48deb148e57a3dc2c1a010a20bc31659f06de01ab4ae8cf5a0a032eea927ed","isrc":"QM24S2102653","name":"Too F*ckin' Nice","registered_at":"2026-06-07T14:59:39Z","spotify_id":"1H3UKICxnA64tYmGmXePi1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b48deb148e57a3dc2c1a010a20bc31659f06de01ab4ae8cf5a0a032eea927ed. 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/1H3UKICxnA64tYmGmXePi1.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/1H3UKICxnA64tYmGmXePi1.
Everybody's Breakin' Up (From the soundtrack to the motion picture "Trust")
{"copyright_id":"0x9cfb2a94421dc2a371ac8648e89905e41dc704975d952f3841eaed1627f80996","isrc":"QZDA72137128","name":"Everybody's Breakin' Up (From the soundtrack to the motion picture \"Trust\")","registered_at":"2026-06-21T08:22:00Z","spotify_id":"2iVcVK97GHjEuzBaQQZfU0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfb2a94421dc2a371ac8648e89905e41dc704975d952f3841eaed1627f80996. 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/2iVcVK97GHjEuzBaQQZfU0.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/2iVcVK97GHjEuzBaQQZfU0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bac91c41ab30cf495d68fa70f93597d44c5917f318a024656b090528195bc46. 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/1LGMhZJVmn8luzk5k2YXQo.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/1LGMhZJVmn8luzk5k2YXQo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4202d7dc30c403b4a0b1978401ae31ecd45462db42ecaed5a22e402367abce1d. 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/1KduF4t7FmMPKbu8U5GvsI.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/1KduF4t7FmMPKbu8U5GvsI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ab324987904798a9152a42157de06bb21f5c92417dae106a24e742e0008fa1. 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/61e03HSUanPGL3M3WSiJgE.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/61e03HSUanPGL3M3WSiJgE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1da082c039f339320cb7e601bc3edb1d2506ab813f6a5f5f9e1835c1a6eb56. 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/2lCPing8ljG7emzHmZhdls.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/2lCPing8ljG7emzHmZhdls.
Make It Shine (Victorious Theme) (feat. Victoria Justice)
{"copyright_id":"0xf05de475398d8c7c71473b79b08687b92141755d7bd1622eadfe5ca54fe7ca51","isrc":"USSM11000568","name":"Make It Shine (Victorious Theme) (feat. Victoria Justice)","registered_at":"2026-06-04T03:48:46Z","spotify_id":"3EQ3xbQizgROebPrp8mDf3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05de475398d8c7c71473b79b08687b92141755d7bd1622eadfe5ca54fe7ca51. 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/3EQ3xbQizgROebPrp8mDf3.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/3EQ3xbQizgROebPrp8mDf3.
Victorious: Music From The Hit TV Show (feat. Victoria Justice)
{"copyright_id":"0xf05de475398d8c7c71473b79b08687b92141755d7bd1622eadfe5ca54fe7ca51","isrc":"USSM11000568","name":"Make It Shine (Victorious Theme) (feat. Victoria Justice)","registered_at":"2026-06-04T03:48:46Z","spotify_id":"4nqxQU97VmHhn3e6a3CUWZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05de475398d8c7c71473b79b08687b92141755d7bd1622eadfe5ca54fe7ca51. 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/4nqxQU97VmHhn3e6a3CUWZ.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/4nqxQU97VmHhn3e6a3CUWZ.
Freak The Freak Out (feat. Victoria Justice)
{"copyright_id":"0xa88f09ccb903fcbcc0abd9afa90635ea4b453629786a721205eaa0545d4e5737","isrc":"USSM11004546","name":"Freak The Freak Out (feat. Victoria Justice)","registered_at":"2026-06-01T20:16:15Z","spotify_id":"3vu8NXAryXrNG8ICj71Buq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88f09ccb903fcbcc0abd9afa90635ea4b453629786a721205eaa0545d4e5737. 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/3vu8NXAryXrNG8ICj71Buq.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/3vu8NXAryXrNG8ICj71Buq.