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 0x59b2265da45ef782d423f4ffc56312afdf5ebae47599287d6d95daf2e02ac8c7. 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/f5c5e63b-1894-468c-821a-e18587284ec3.json and https://artists.proofprofile.net/proofs/artist/f5c5e63b-1894-468c-821a-e18587284ec3.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 0x13236a860ff9ef2319636dede1fe258809ed440a8a497b8947ae7a5c3e395ac3. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/TCJPH1815078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa57989e51f46e8da1c18f47718db38330d9bb89ce332c03d7e72c42da2cafd. 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/TCJPI1807925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22298272c1974c0f37a2d94a1b2ed40f6ef56377162cca30e6151d1d23ee4fe. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/TCJPI1807957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cfdbb9c684f6edfed13548cfebe8fb73230df4b3c555543baf70a130cc07259. 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/JPB622001390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e715052fccc8c75eaea5497457c76fa773cbe5e7def41b4e63f2ad6b746102. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/JPB622000825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973493a00db555131012f3a8bbba73ab55cf9b0de155d07e4395a1d7c4be4b44. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/JPB622001364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e0fd8eaac8e976edb2f0e9ec98ef774842e20f9b353dadea47cada5bf88359. 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/JPB622000667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16d319f73f40b9039978c3bd7ca575d361e4c1e8ed9df6e834a0d2bc460f184. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/JPB622001394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9820ebed1eb9d8dfe602b41f53fa62746bd946293ec9854aabc818fdd52fdb. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/JPB622100885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b1f17f54e5ae7481a9363839a403bd2ef99e8fed395d72f7bfce3cd8c8ad89. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/JPB622100888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9cd701163379a86c674644ed2d83dbc457a962c7ce6da9c28af8b8cfe28c97. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/JPB622100882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07f259236ef25d88501f826f4c2017596d27951fbb5a0ab9c9303ed5f4fe795. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/JPB622100118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c11597d59ca3c48168723a9889aec757d43679b1838ef450b7c0edc80445b6f. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/JPB622200624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218d8bb1d3d16f5a6cb4cdfaa1ba0818641ace7c801aa2faa26cd1da2c8cf790. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/JPB622201013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1834974a43a3bba37854b97cd8e03f4250c3cd692a7156e777ef52340a786a. 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/JPCR02301110.
missing summer (Hugh Keice Remix - Korean Ver.)
missing summer - Hugh Keice Remix - Korean Ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc90639f7e2130ef010fff1a0c69bf9cbeafa53084367deba7ff2f1887c70712. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/JPB622202973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c71ffa55fe1e314360e445e74314054c1aec2870058618a0369004acdb2094. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/JPCR02304630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6d0c6a54ad14c5a9269a81f8875ff9ea3670efaf3d1566ed0452869c7b4706. 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/JPVP02315801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a2003833555dd4e1c4cacd21ef9c825591ae31ddb68a56806c250877c7a664. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/JPCR02306030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd5a33f14b693f32cb67e453640987f3f8f60334a136431b55058310588103d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPCR02401910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589790c7fb0d756434f84a31b61be956a881abeaad53317f6650d5d63e53e988. 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/JPCR02404400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf3f50031b8fb88b9e2be8cd4117052659b925c13f986d7a5c8d9fc39ba67d0. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/JPCR02404420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b19d57d96b827c57fd18cd08f0e84081985e677d4e7aa805fc52d7c32f5653. 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/JPCR02404430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c71ffa55fe1e314360e445e74314054c1aec2870058618a0369004acdb2094. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/JPCR02304630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a2003833555dd4e1c4cacd21ef9c825591ae31ddb68a56806c250877c7a664. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/JPCR02306030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24bea2f4300c83fc0dd274efa89bfd617898e0e1bbe15b8c84e4013ef49152b2. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/JPCR02404440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589790c7fb0d756434f84a31b61be956a881abeaad53317f6650d5d63e53e988. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPCR02404400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc894c14e0a150b02bcd4b1afe8a890f51ba75642fa50bcb4475e513ad61f690f. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/JPCR02404410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1834974a43a3bba37854b97cd8e03f4250c3cd692a7156e777ef52340a786a. 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/JPCR02301110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9302b136f8a68b20871c5f5e3ef407ec77c86e9a4ec0e40398844ba21fe51e13. 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/JPCR02402810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd5a33f14b693f32cb67e453640987f3f8f60334a136431b55058310588103d. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JPCR02401910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4c399187fc4691c28078aa935042894f7f302e461e37e7c52df265d84249b6. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/JPCR02504910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6250edd28ba6a389dae4901c07024c7b4589984f1543d21080c3d8f97e83973f. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/JPB622200842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6250edd28ba6a389dae4901c07024c7b4589984f1543d21080c3d8f97e83973f. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/JPB622200842.