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 0x4878ae18e0ef99fe4fb5a216c4513c06ba6843dc4444bc9d93804a567545cf40. 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/4e92142e-25ca-46f2-8cee-660e82268456.json and https://artists.proofprofile.net/proofs/artist/4e92142e-25ca-46f2-8cee-660e82268456.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
THE IDOLM@STER SHINY COLORS L@YERED WING 08
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 0xd32db3208b8324ca1f9bcd8aba6dcb389fe764eb9bda4431de0e5c62aaa4204d. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/JPI102102759.
THE IDOLM@STER SHINY COLORS PANOR@MA WING 08
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370d24d0e8a7011a4f0fc657b98fc6dc3fc95222d0e531dcce508389ba17baad. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/JPI102202347.
THE IDOLM@STER SHINY COLORS COLORFUL FE@THERS -SHHis-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a9fca07f165aec7c49cea5649eaa8eb98d8d4fc29c2342aa2945f648e5ba2e. 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/JPI102300840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd163446f00ece6a869e4f1cb0d227dc5a4c13cdc98c5831266ecd3e06293dd. 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/JPI102300841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a04a0fa07d58ccdd9eac70a1baa8d0442ddd7b37ab2fbbc402b259654c525b1. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/JPI102302103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3eb9bdd15eef57a53ca97c3e339dbb92c0b010f740a9cd5a100e8d08ff7280. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/JPI102302113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac65965d21e3a715659219eeda1bfc58994d6d909cc142c72bb487263d3457e7. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/JPI102302114.
THE IDOLM@STER SHINY COLORS Song for Prism Happier / 枕木の歌【イルミネーションスターズ盤】
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20b5862a24f56ed9a4484e315686d5d6ad6fbe24c2b19d2ab29ba8778f23e4f. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/JPI102400249.
THE IDOLM@STER SHINY COLORS Song for Prism Happier / Makuragi no Uta (SHHis Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20b5862a24f56ed9a4484e315686d5d6ad6fbe24c2b19d2ab29ba8778f23e4f. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/JPI102400249.
THE IDOLM@STER SHINY COLORS Song for Prism Happier / 枕木の歌【シーズ盤】
THE IDOLM@STER SHINY COLORS Song for Prism Happier / Makuragi no Uta (illumination STARS Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e0d20b68de97f277d8236eeb0126c03478fa3950fed0fdf89bec044dca1532. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI102400250.
THE IDOLM@STER SHINY COLORS Song for Prism After Run / mellow mellow【アルストロメリア盤】
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8639dd1df77eef74b4dd08b95702a3fb2daaccdfb369c5ba27269511fa537e71. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/JPI102401595.
THE IDOLM@STER SHINY COLORS Song for Prism After Run / mellow mellow【シーズ盤】
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78099962ca519e4d6769d7a9d9c291e29aba4265e11a029b401691fe18744b89. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI102401743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef103c4d8b6f0ecf46e01ac253f5164ba7f08c142b1b8127ad7e2e308f7eb29a. 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/JPI102402697.
THE IDOLM@STER SHINY COLORS Synthe-Side 03
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf58243d3c9e913d7a648f4db50afc7a1737243d9656340dd6bbfda89454cc0. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI102200529.