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 0xc7cd2ca12796999d648b8ed5f77381061716f7aa70966a65e4b289b147044adb. 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/9ff5f66d-0897-4b50-8a45-d73be9408212.json and https://artists.proofprofile.net/proofs/artist/9ff5f66d-0897-4b50-8a45-d73be9408212.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
THE IDOLM@STER SHINY COLORS BRILLI@NT WING 04 Yume Saki After school
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 0x54bd7e01feb9c0dde31893784a1bda2f53bdd084528aec394d7c14d1bb03cdde. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI101802069 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed4e86af51ba5b5d6891f6546870a5b79dabacf0c2042e7a59f89a50ea412a7. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI101802078 — a six-check JSON result.
THE IDOLM@STER SHINY COLORS BRILLI@NT WING 04 夢咲きAfter school
THE IDOLM@STER SHINY COLORS FR@GMENT WING 04
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f8f105ba4d080ad2e93de4645d88b3ae619765632eb8de4e964eae70e02d35. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI101900931 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50df6c29a66bf7d696f650dd6d0191647e737e5f632613a2ef84aa56496027e3. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI101900932 — a six-check JSON result.
THE IDOLM@STER SHINY COLORS GR@DATE WING 04
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffa03b8c34a31abd427c12d5f9e240dab264edb1af88fac22f2a35a22c3f8b8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI102001589 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3aa5f42daef4c623e49fe21051d3eba4abb8f47855d1c0b3fd60b9ba32b7f5. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI102001590 — a six-check JSON result.
THE IDOLM@STER SHINY COLORS L@YERED WING 04
THE IDOLM@STER SHINY COLORS Synthe-Side 02
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c107e8a6221d92cb0fd81ad60520e5eab537888f529839f4df449f84974886. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI102200524 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9b9c5f86aca966fa3bb00641e563766c33e378e81737736cfa3f7fd4d9f9d0. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI102200525 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0140ade739f8e07ded38da3729237860e24e738ee72ae5273111dc7efb87aa6. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI102200518 — a six-check JSON result.
THE IDOLM@STER SHINY COLORS PANOR@MA WING 04
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3c2f71354698d36e8dcf26c983fd5cbe3ec20ee50caaf247cdee6a0e417b20. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI102301157 — a six-check JSON result.
THE IDOLM@STER SHINY COLORS Song for Prism 裸足じゃイラレナイ / 明日もBeautiful Day【アルストロメリア盤】
THE IDOLM@STER SHINY COLORS Song for Prism 裸足じゃイラレナイ / 明日もBeautiful Day【放課後クライマックスガールズ盤】
THE IDOLM@STER SHINY COLORS Song for Prism Hadashi ja Irarenai / Ashita mo Beautiful Day (HO-KA-GO CLIMAX GIRLS Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1595e7bafe31e81d7c899235f1df07bd2ab8be7a8efe17ade5c4f36a1e291c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI102302358 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f54e98737c50a52c0c0a958d4ea7fc7d7234660778052b902fe01d3cb9b59f1. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI102302359 — a six-check JSON result.
THE IDOLM@STER SHINY COLORS "円環 -Halo around-" 02
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781425fbda373b7176b229def72ce23bc0afbfe347177777b6e119e042f092c1. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI102501339 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16337022da1a28fbf7f2a614ef3c9edb4b8b77a94391342310b40bb5b9328b05. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI102501340 — a six-check JSON result.