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 0xf50fa871133bcedce3afcf6b5a781aa37cd1d1e5ed6ec91c0b8acde3d70a089f. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2fe085e-72a8-4e67-a180-3bb3926667c8.json and https://artists.proofprofile.net/proofs/artist/e2fe085e-72a8-4e67-a180-3bb3926667c8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
THE IDOLM@STER Gakuen (Original Soundtrack)
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 0xc59e964b1a8c3bb03e15860d8751601cb3295ccf77ae5314ced25db13511b133. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/JPX832004765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43272210327a9d0e81d528acbc150f45580d8e08d7eacd9accab86bb31a3f8be. 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/JPX832004794.
学園アイドルマスター オリジナルサウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97319179c4faacd250e0c3f365e972896fcf1c30a32f6be12b9324d96fcc684. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/JPX832004772.
1st movement READY!! ~BEYONDE THE STARLIGHT~ PRIDE STAR (from Day1/ Day2 Act 1 “FIVE STARS!!!!! ～ Symphony of Stars”) - Live
THE IDOLM@STER ORCHESTRA CONCERT ～SYMPHONY OF FIVE STARS!!!!!～ Concert Album
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c9e7ccdf8d22ce19ed9408404ea7a72f4f80c23237d9f3d2af53828778192e. 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/JPX832001326.
2nd movement Hoshikuzu no Sinfonia ~Nagareboshi Kiseki~ Anniversary (from Day1/ Day2 Act 1 “FIVE STARS!!!!! ～ Symphony of Stars”) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4f781c453c368c033dfa0c4949328a55c406c68223452a3a7aaa92104fd0da. 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/JPX832001329.
3rd movement Sunrhythm Orchestra♪ ~STARLIGHT CELEBRATE!~ NEO THEORY FANTASY (from Day1/ Day2 Act 1 “FIVE STARS!!!!! ～ Symphony of Stars”) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4a8feb0a27a92f29c8333a4416fd8a2b620d004ae73ee9905122d412a0aeec. 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/JPX832001332.
4th movement Twinkle way ~Glow Map~ Destiny (from Day1/ Day2 Act 1 “FIVE STARS!!!!! ～ Symphony of Stars”) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf634d489742ccfe5e01d6b0d73a101a3b25c47cacf13bd8b8373574c505e963. 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/JPX832001335.
Resonance⁺ (from DAY1 Act 2 “Brillante Stage!!!!!”) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd903bbc4cee091a02de1a5e4f6bd21fa5caa6cccdfebf3752d6a4b9636fe7e9a. 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/JPX832001338.
Sweet Memories (from DAY1 Act 2 “Brillante Stage!!!!!”) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa366cc74a8cf903970bf6fcccbb3cf5de81531bdb67e110f738ac5da1daea5d4. 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/JPX832001339.
Koikaze (from DAY1 Act 2 “Brillante Stage!!!!!”) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e26e591be1a0147e72714523c9611ed1d9c59950bf73a3708c334c19f2f3455. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/JPX832001340.
Message (from DAY1 Act 2 “Brillante Stage!!!!!”) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8895ea4aea809d46b5513019cc4a6d0e11b54f5375222f6a02348031a51752b2. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/JPX832001341.
Shine!! (from DAY1 Act 2 “Brillante Stage!!!!!”) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156f3b147935b10d95a2c5ecd79042921bc1f641cbb25ea1cf47898739ae148f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/JPX832001342.
Hummingbird (from DAY1 Act 2 “Brillante Stage!!!!!”) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a30ddff24758d8af62a555d89177c67ba7b205f8a7c5180a39b4691f900ef73. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/JPX832001343.
Aoi Tori (from DAY1 Act 2 “Brillante Stage!!!!!”) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ad821b59fbdca9acff80c4ad44945bd01f12f43f838eedf5909cca3a4e141e. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/JPX832001344.
Hitomi no Naka no Sirius (from DAY1 Act 2 “Brillante Stage!!!!!”) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e0c3f2e3235ec4444c780d7e76e371fbcc5e3d3a97a3ff3bd71adcd1472418. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/JPX832001345.
M@STERPIECE (from DAY1 Act 2 “Brillante Stage!!!!!”) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0a531c5919eea12cb94e217d3d80f4fcd09a978d49a698473d06f245bc80c2. 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/JPX832001347.
mermaid fermata (from DAY2 Act 2 “Brillante Stage!!!!!”) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bd4685040653b6d4007f0fa03775f9c13a0c5f7b4a551d6ac5f8930a46f00e. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/JPX832001349.
The 1st Movement: Mirai no Tame no Nijuso (from DAY2 Act 2 “Brillante Stage!!!!!”) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22fc7481ddaf0b501ebebe5dc00d27b755287a7545e13268ebd6d196a6395343. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/JPX832001350.
Koikaze (from DAY2 Act 2 “Brillante Stage!!!!!”) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c46ee29e6d12648dc5fcf612cd9d381a5e7d83ed9383025b9cf17add629a580. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/JPX832001352.
vivid color (from DAY2 Act 2 “Brillante Stage!!!!!”) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a86c68be6418507014a0fb8522c679ae26df7645fbcf82b3c0949e9d63dc23. 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/JPX832001353.