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 0xf307e8d3e3d0ea9b187236af0df2a8e5fb04cc795a49fcccc7f34e5acf1401d4. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c53e5848-5b6d-4780-a48b-e8c06ba991cb.json and https://artists.proofprofile.net/proofs/artist/c53e5848-5b6d-4780-a48b-e8c06ba991cb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
THE IDOLM@STER SideM ST@RTING LINE-13 もふもふえん
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 0xa2007f177d082bfa1a66555204672ed447dd2be38bb00a29ba923c77b697b466. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:30:33Z), 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/JPI101602138.
THE IDOLM@STER SideM NEW STAGE EPISODE：01 もふもふえん
THE IDOLM@STER SideM GROWING SIGN@L 07 もふもふえん
THE IDOLM@STER SideM 49 ELEMENTS -13 もふもふえん
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcc8a3f54c2fe4c7b2d0e8760ca5e96e5234d4bb349c37fbcc2f5720ece63d7. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/JPI102301726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602f4f0588964385aeeb72c9f274ff2c8a8d1a2c50262a32d728443db3a0adb2. 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/JPI102301727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283c9d1a1fe097ca5d4995b464e4602107cece775c8138954af42a4dff766b51. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPI102301728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba00555b82668aa639816b269151e2b03df8c874e4cb195301199fb0c4b6bdd5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPI102301729.
THE IDOLM@STER SideM CIRCLE OF DELIGHT 04 もふもふえん
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a28f84b9d7298f24cb220c4ef5d090658f1b8dbf22a0a3d38edb3f69e594a00. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPI102302787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44eebaa59ea2834b7536bfcf8753c61f9593c208434883971bce21dd20746063. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/JPI102302789.
THE IDOLM@STER SideM 10th ANNIVERSARY P@SSION 11 もふもふえん
はんどめいど・きみはーと！ - 岡村直央 ソロVer.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977fd239b20543dae06564ab367c72755b1c6529794c4828b89cf045e8f9cab2. 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/JPI102000855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444f4f3e9c8d23ab43bd121fb2b4551484cdcbd52d5b2459d553986df4a901c9. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:10:37Z), 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/JPI101602136.
はんどめいど・きみはーと！ - 橘 志狼 ソロVer.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b953573ad16eeb50d8f98851b5f8726ca9b36122c037101292cb63523d5219f. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/JPI102000856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356797c80fc42ba43330a582a385afbffc5a8a33399c26a837ac42d31f67d6d6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPI101800425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd602f276b60ae0756268b01be5f5b55c80d143e0eb7be1bece0bd4edba76c817. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:27:16Z), 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/JPI102000077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af631a038b41ef59e800dbef091e4052d49b7bdd8db8699d81d003fbbaff394. 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/JPI102001356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf97156319cdbb3267d6078a1afcace991a04698c72f39b778c7b4c6b0aa6bb. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/JPI102200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541201b8cfd5e772b02eb25f61a660ba24c299ae7b79bb7e532f6d74fc16eb29. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/JPI102200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a28f84b9d7298f24cb220c4ef5d090658f1b8dbf22a0a3d38edb3f69e594a00. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI102302787.