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 0xd0c409c365b6fb13c7eab08c45cd7f66360e1f6f9a01c5793ad0fd5e14671535. 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/f15b4ace-c29c-4fe1-895b-0322596fd622.json and https://artists.proofprofile.net/proofs/artist/f15b4ace-c29c-4fe1-895b-0322596fd622.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 0x9807003933ce7b6ede7a6bfd7629aa3a4268857b4476690f505d30e43e9d3028. 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/6UqbN4s5Uy9wWFDNre2BNB.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/6UqbN4s5Uy9wWFDNre2BNB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e7a9ea53f5634e5825ef58683cfde824841a48d22dddf0c95c2e140a53a727. 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/0e9skrsECOVqRRNFgFdA5c.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/0e9skrsECOVqRRNFgFdA5c.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b32302e0680596f6546368a4595b431350df1753d569cef817efc87c3163303. 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/1uNH9a0QFOFZsPUU7B2oxz.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/1uNH9a0QFOFZsPUU7B2oxz.
Fox Rain (The Moon during the Day) - Instrumental
{"copyright_id":"0x61e99e8d9bd26132b316d3edc4c26c1ca5133a5d3918283daa51a2a4855b35f3","isrc":"KRA252302535","name":"Fox Rain (The Moon during the Day) - Instrumental","registered_at":"2026-06-22T22:09:56Z","spotify_id":"66RAYv9qIsOSrIFzAz0Rkx","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e99e8d9bd26132b316d3edc4c26c1ca5133a5d3918283daa51a2a4855b35f3. 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/66RAYv9qIsOSrIFzAz0Rkx.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/66RAYv9qIsOSrIFzAz0Rkx.
{"copyright_id":"0x8689250883d1ebe2a208cf1f487e17fcbb029782ece699e6db2f85ef8514135e","isrc":"KRB472302236","name":"A Beautiful Farewell","registered_at":"2026-06-09T15:23:02Z","spotify_id":"3dFiJSq3woyVfZtUoJQ9pq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8689250883d1ebe2a208cf1f487e17fcbb029782ece699e6db2f85ef8514135e. 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/3dFiJSq3woyVfZtUoJQ9pq.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/3dFiJSq3woyVfZtUoJQ9pq.
[THE SEASONS VolⅡ. 10] <AKMU's Long day Long night> ReːWake x CHUU
{"copyright_id":"0x0b9a8cc77541c3090d564b4afee5b2292f9f5446ffbe2bc46bf3bfaaa2868d08","isrc":"KRA382321842","name":"I Like You","registered_at":"2026-06-11T01:39:56Z","spotify_id":"4RdYyxFUSBqDS64laTQFfi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9a8cc77541c3090d564b4afee5b2292f9f5446ffbe2bc46bf3bfaaa2868d08. 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/4RdYyxFUSBqDS64laTQFfi.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/4RdYyxFUSBqDS64laTQFfi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abbda17c3043c712515c53e4ecaaca1cf939a2c9ae615110c26e7dc2d9c30d9. 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/17cciVZC83EP26VENr3J5n.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/17cciVZC83EP26VENr3J5n.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e22bdd409c9c81372290bb84309ef9a77dcbd1733ab32b098453d4dc1008313. 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/4DIXILEIso4tqk5uvzXXrj.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/4DIXILEIso4tqk5uvzXXrj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fe1267e075f1906f86a062d67d12770370ad3c4b0922537aeda08684f3adb7. 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/04X5V1fARpzi0SjHDMtFdu.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/04X5V1fARpzi0SjHDMtFdu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8ba3085293df4147a0b510ad31e663cd851643242a76e9c5ff82e1627560bc. 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/1FS27YH6ra3pkwNDnIHIfa.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/1FS27YH6ra3pkwNDnIHIfa.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15313460d0a7c12099c1c405c9993231569a0e19f35452374cea8ee28689163. 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/0hdTPwfYuseUTwpJ9bg04B.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/0hdTPwfYuseUTwpJ9bg04B.
Our Night is more beautiful than your Day
{"copyright_id":"0x67ae12a79041b7ab8823575772e206e821adb5a350cf8dc7ebdb2af075231bde","isrc":"KRA252301482","name":"Our Night is more beautiful than your Day","registered_at":"2026-06-09T13:55:48Z","spotify_id":"0SXsRcuTaWZAg6QyDhncpY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ae12a79041b7ab8823575772e206e821adb5a350cf8dc7ebdb2af075231bde. 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/0SXsRcuTaWZAg6QyDhncpY.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/0SXsRcuTaWZAg6QyDhncpY.
Our Night is more beautiful than your Day - Instrumental
{"copyright_id":"0x0b6e362eb4d1b89b56dba5be40885093728ebc78c184b8f0f0af9eedf552abf0","isrc":"KRMIM2333684","name":"Let's Love","registered_at":"2026-06-08T09:19:00Z","spotify_id":"6h5ORMFWElwmVjCYWxZosK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6e362eb4d1b89b56dba5be40885093728ebc78c184b8f0f0af9eedf552abf0. 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/6h5ORMFWElwmVjCYWxZosK.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/6h5ORMFWElwmVjCYWxZosK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6033694d96ec65165fa3ec136739b720cb1dcf778c431d8016ce36d8c4315b5. 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/40wyDhO974VOe491zfVLbC.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/40wyDhO974VOe491zfVLbC.
Confession (Ditto X Chuu (LOONA)) (Inst.)
Life reset re-debut show - A star is reborn [episode 3]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed8a998c2d8f227e9c21531798553603f56301265e2039f8942ced97d5367ec. 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/6ch6gwttUHqdYBh2Gk5ejP.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/6ch6gwttUHqdYBh2Gk5ejP.
{"copyright_id":"0x4bdcda23494ed75b1f524fb5142f489e46bb0f1c15800467ed06a68fb0c4ff99","isrc":"KRA382207865","name":"Back in Time(Gaeul)","registered_at":"2026-06-22T17:32:16Z","spotify_id":"3uu4ZxgC6uwtb8gjySdyuq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bdcda23494ed75b1f524fb5142f489e46bb0f1c15800467ed06a68fb0c4ff99. 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/3uu4ZxgC6uwtb8gjySdyuq.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/3uu4ZxgC6uwtb8gjySdyuq.
Daily JoJo (Webtoon Original Soundtrack) Pt.1
{"copyright_id":"0x2f35babdec77012b293c0fbebcf215dd3a01339403bc94447fb47b1eaebf128e","isrc":"KRNAR2204409","name":"Brunch (Daily JoJo)","registered_at":"2026-06-20T17:51:01Z","spotify_id":"5kFZ1HUfcWbcaVLS7gkLhL","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f35babdec77012b293c0fbebcf215dd3a01339403bc94447fb47b1eaebf128e. 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/5kFZ1HUfcWbcaVLS7gkLhL.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/5kFZ1HUfcWbcaVLS7gkLhL.
{"copyright_id":"0x7587922de1157ee8646dcb2541e1acc9366c2e8d018a2d00deb4c4c661cef390","isrc":"KRA382207131","name":"ONE AND A HALF","registered_at":"2026-06-07T04:58:38Z","spotify_id":"0yfhVon5XPlCRYNihFIUwu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7587922de1157ee8646dcb2541e1acc9366c2e8d018a2d00deb4c4c661cef390. 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/0yfhVon5XPlCRYNihFIUwu.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/0yfhVon5XPlCRYNihFIUwu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afeb5027e1ce8e9b707f5152f96e9e16fa5b282177a846b163059e9c79ce969. 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/7el09AiwrCGGZW8rsSvbc1.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/7el09AiwrCGGZW8rsSvbc1.
World is One 2021 (Feat. Eric Bellinger)
{"copyright_id":"0x414020c0c222c7cc0cdde57aaa57e0d1626f798dc4ebdcd6b6e2228f1b37c274","isrc":"KRF632103974","name":"World is One 2021 (Feat. Eric Bellinger)","registered_at":"2026-06-09T13:25:26Z","spotify_id":"342lZcrcYRL1kN3a87g1ay","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414020c0c222c7cc0cdde57aaa57e0d1626f798dc4ebdcd6b6e2228f1b37c274. 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/342lZcrcYRL1kN3a87g1ay.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/342lZcrcYRL1kN3a87g1ay.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3494b750925c53d9b4e384e6118d492cee86a45e66a39b6c36314543953cac8b. 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/6Qz0KIyTmj77cjylfKKC3H.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/6Qz0KIyTmj77cjylfKKC3H.
Fling at Convenience Store (Original Television Soundtrack) Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7272b2e031f62dfda7c55b429dadcb5a6d993639f81356790460e17e070868. 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/1dMrUkPtYB0nf0UiHdDoye.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/1dMrUkPtYB0nf0UiHdDoye.
INTO THE RING (Original Television Soundtrack) Pt. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70290406e399bffaefc0ee04f001cad15ed741670022302c85bfa8223a686c0e. 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/30tO1TPD9btGJr8Rl1lV1N.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/30tO1TPD9btGJr8Rl1lV1N.