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 0x90fdc72dd829336c43af42e1afe48e2cc944e3f2189222561db415eff1094fe2. 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/f23f8ff1-71da-408e-ae28-83399e385e04.json and https://artists.proofprofile.net/proofs/artist/f23f8ff1-71da-408e-ae28-83399e385e04.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
THE IDOLM@STER SHINY COLORS Song for Prism Hanamuke no Hanataba / Aozora (CoMETIK Version)
THE IDOLM@STER SHINY COLORS Song for Prism ハナムケのハナタバ / 青空【ノクチル盤】
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 0xe0f19df9855bf8ac06a6070f36196105a63f9b57895ec51142847ff2de071d7d. 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/JPI102302621.
THE IDOLM@STER SHINY COLORS Song for Prism ハナムケのハナタバ / 青空【コメティック盤】
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25547084d60a10f2da758cc5b43b4dd9b9e61b1eb226ebec85a13f76a7403073. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/JPI102302793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf77d6f5af278870e4e0721172291b95d4a469828040d724c32926a7d27d9b7. 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/JPI102400601.
THE IDOLM@STER SHINY COLORS Song for Prism Hanamuke no Hanataba / Aozora (noctchill Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25547084d60a10f2da758cc5b43b4dd9b9e61b1eb226ebec85a13f76a7403073. 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/JPI102302793.
THE IDOLM@STER SHINY COLORS Song for Prism Heads or Tails？ / グッバイ【ノクチル盤】
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91eb597585e4af6880f0806b2539fea167b863410c9fa8393100d82d45f55fd. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPI102402061.
THE IDOLM@STER SHINY COLORS Song for Prism Heads or Tails？ / グッバイ【コメティック盤】
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae365ccb6439376dd13248c3646c185751c8ea6f5bad408161ae3b06e1e1079. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/JPI102402062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85dae0738a4d41ad930e4f82800e1b1b2e5b068c25be891db2a3972377b0d834. 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/JPI102402063.
THE IDOLM@STER SHINY COLORS COLORFUL FE@THERS -CoMETIK-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed8ad0fd407713912f39e2ec85fdff79fa3642372e5c18ef4130a60f2d2c0ca. 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/JPI102402980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf50d42e068f5061c265722b46dced29b80805f21224ec3083fdcab2fffa5d33. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/JPI102402981.
Migratory Echoes (コメティック Ver.) - Off Vocal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd245d52a4f71509749b849cf0d267a6310690503ba3a26ef6b517d0339052bc. 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/JPI102402982.