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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b5eb395c30b113f324b65d710e0b43aeb56e5b6fbf0aea936269d8719e3f75. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/44282bdc-e445-4bd4-9739-55d7c4348cba.json and https://artists.proofprofile.net/proofs/artist/44282bdc-e445-4bd4-9739-55d7c4348cba.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c17cf06d0a8dd49ad04f49de6be279d93c8725d94e0bde2530c741d5eafb928. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/JPA960590243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bf4153485bfecad18961d1900cd1091957e6d6aec296fa17c55f3009a4ef16. 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/JPA960590245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd12c8903a1c567a77269fca669747c1002964f81291bbabebe0d108c9b9964b. 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/JPA960590247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890c2dc79e2dc1a777fd16c5046907a63e5047afd315ae7e58f1aac88a31c980. 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/JPA969590299.
Gozen Hachiji no Dassokeikaku -This is what you want, but This is what you get-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9359187d0862b7e4580ed6ede643832e309ccbb798425b557b2837ce10f05658. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPVI09904680.
午前８時の脱走計画 ～This is what you want, but This is what you get～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9359187d0862b7e4580ed6ede643832e309ccbb798425b557b2837ce10f05658. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/JPVI09904680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe869ab402083c023b1ee8d428a640320a03fb24179987057f361cf43317ddd. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JPVI09933790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa4db533ee06ff4e80b42efb3482bad20dd306a679bdb016384f7d122a8218f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPVI09933820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cefcc51c5df6f7fd5b23457482e60cf24a084490e23ef28c9d2c28ee1cfe801. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:31:49Z), 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/JPVI09933840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea01da4e41b34e0798fd34997347ce5294ddf8e308a26491ad703f8e8518e5f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPVI00029260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e6242f2096083102c15530f617dba986a52bb45f7659c3dd4420dca83e2828. 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/JPVI00029270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9aa8750d53738f67c71098bb83b97a646d67003b7d66fff6726e4ce1599898. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:27:24Z), 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/JPVI00029290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4e652e015d340cc7720e323ee57c1e2825d208f0b50a77d72bfe43e7c1b98c. 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/JPVI00029300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a7ee490e0d69f9c8b8babcb39f0a9bc2ebbf3ceaf4985053807b6d9d8fd7d8. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/JPVI00029310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cdb6fa403879e0d90e7426d557d1d61f3cc03f0f9f885df27196d14377dea6. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:54:18Z), 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/JPVI00029320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870afbfdc8dc4bff1d3cce8819f2ce42a14776799313975e4136cd63a8207d60. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/JPVI00029330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a2134f34e9d9dc401b7e232b950e912182e22dad54d6eda8766981775d04cf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPVI00134170.
Air Guitar〔“The Artists Formerly Known As Cymbals”mix〕
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5dc9a230b41ac296f4912fa736a6f6f6cb4b0e54d3b6e00d3a6fcb3712e3995. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPVI00136980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b1e7f79fd8c560acd64ea2b24087935b12f2f3439ba03331c5c61611e28875. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPVI00134180.
Highway Star, Speed Star〔NORTHERN BRIGHT remix〕
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54a7fe58536036723754d4ca88c3c657229593d338de1ecdeff4da0b29abfff. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPVI00134190.
Swing, Swing, Swing!〔Word Boy Word Girl Mix〕
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8da0f7e1c1a8ef5bf6929825ba4079cd2b7d234402e45ba1065675856aef51. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPVI00134210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27fcb9daee9025045e84b0dc243cbf91c11f229dcc90b02ea2bf58d186440b0e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPVI00134220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9a6d6e8ba6e118c211008be2e0167ad370dbaf44e3c7a9b0eddb04965e3b87. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/JPVI00134200.
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 0xd1df97bba27eef109e5196c6bd41df4da2872a42b6b55e4ebb1be7aba2a3b57a. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/JPVI00214930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555d8aa2b2a000b11c42c22fd59f96e151e3d80e568d4afb848d2b9d6788d1ec. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPVI00214950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd145f7cd5c20cdadf0e6e85b44b64b6adb0722454e333644ed2c9ab05a778c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:05:17Z), 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/JPVI00214960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4340d7c8f799d168fc48a1e138dbed969ebb3f19c174c55d96b02c6806b1d80. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/JPVI00214980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f6a4e0c2112b046c564596ea34b3972790d189b5152e6b2cce2fc28ccb670c. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:24:15Z), 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/JPVI00210250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6ab9a2bee1ac2ea007db9033004254c6d659dd32a9680b0558a60ae17f3f25. 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/JPVI00215000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb51bafb4f2125b647eaa8af058e2eac370d4f46cdeb20f350a7b501292e7fe. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPVI00215010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6234a7ac6ae2a8a7b11c39345127036de2f5617a4e3d8f43cb70cc02d55d96. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPVI00215030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b5102788f1724248f4ddfc077f7e7e56353db5586c17a7fd12b5cc5a95d6ce. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPVI00215040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79cb7a8f752f90f6ab74b5244e2149dd53ee2094ed5f8c3b4ca4b486800fcc98. 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/JPVI00309080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2a11b5457fe981806d693727cfea3cd5d6bf104f00a81195b0e2f546cbf74e. 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/JPVI00230670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc641c161842d65658e0c4c9585d00cc6b6756904670209eaba70d7aaace4f73b. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/JPVI00309150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc804d72833b2b64cf21782f9d943943d68edef7fa0f9f1ff7b515aa91afe3626. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/JPVI00309160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867209a068619116095f99c262fccfbe53de0333173416a44ba92f4f2fc5f5dd. 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/JPVI00309170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1685d4038598be02065129b570f09945e0e69fa18d88676d6d3e5b1550989d0. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:10:05Z), 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/JPVI00322550.