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 0x31a7dc1107fe0230cd47482690651876b3aa319090c52873bc0beec9644251d8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef7e929b-147d-491f-b0f4-0128d4c75832.json and https://artists.proofprofile.net/proofs/artist/ef7e929b-147d-491f-b0f4-0128d4c75832.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
THE IDOLM@STER SideM ST@RTING LINE-04 High Joker
THE IDOLM@STER SideM ST@RTING LINE-04 High×Joker
THE IDOLM@STER SideM ANIMATION PROJECT 06 Sunset Colors
THE IDOLM@STER SideM ANIMATION PROJECT 06 Sunset★Colors
THE IDOLM@STER SideM NEW STAGE EPISODE：08 High×Joker
THE IDOLM@STER SideM NEW STAGE EPISODE: 08 High×Joker
THE IDOLM@STER SideM 49 ELEMENTS -01 High×Joker
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 0x2e8a516fbc01add894d83b2d90bb0cc7c255b547afcb23ff0489e51bda0952a6. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:22:28Z), 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/JPI102201684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d11bd32165ccb5fa6e7fcecdae826e37dc5ab8cba12c988d82398216a12eab4. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/JPI102201685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02da363dfe450cb1d58779ad51d3d3d209b5af545dea4d6118a6432b8b189076. 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/JPI102201686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c20bbd3a238943328975ee78f87b47ee9ed314faa1e8f1e88217a448872eaa. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:49:28Z), 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/JPI102201687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81430e4748a722f46c18f5af4d528f9979bc8e49d56b3a3be981a7a27bf3a94. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/JPI102201688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a0f9e5e1fad821ee787bb4f573e2e64aeb1f8a90052977193c9bd96eb9a7a4. 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/JPI102201689.
THE IDOLM@STER SideM 49 ELEMENTS -01 HighxJoker
THE IDOLM@STER SideM NEW STAGE EPISODE：08 High Joker
THE IDOLM@STER SideM GROWING SIGN@L 18 High×Joker
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d9b2a12d0a846994c11bd18493f23b6136cb0e2f81aa3e4d7292bf09135f20. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPI102202700.
THE IDOLM@STER SideM CIRCLE OF DELIGHT 12 High×Joker
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1786e9fea3100bd66d721897bce177e7d9bd7b4628f033dd927c9764eb91404. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/JPI102401021.
THE IDOLM@STER SideM 10th ANNIVERSARY P@SSION 08 High×Joker
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9567b1a60e1f34f90ad47cbcea4d2da74aac2491b18a16decc1495ba597d1a6. 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/JPI102302172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598774767a34b2f1d9b0667b1b47d1c1a0d4b70183f72fa462e65646d7795e5b. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/JPI101501204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3a2c568d852e2f011e0546973dca47c4b7fcc6c4208d1887461521ab0e2f19. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/JPI101501206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd24275d8ff5698a8bcc5a93e3bc12b7e25611d14bd7e737281fb4a438d8807. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:26:37Z), 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/JPI102302173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d38c851bf23a4d275985a1e1157ac47b2bb4fe0cc8da258029589992e3bdf0. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPI101601339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e573df1eb3d3b7967c8ea86228cb8315894a30478844b59e922d41d29f648ce. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/JPI101702883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca03f90ff1067d7e0c1240f335497a5b32fe93cdd2d6c0300f837d03794ecba. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JPI102000572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776bf218781e1ea6c06e754b267fc6bd75dd354c9a8493694ae77b881c3cf5c2. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:32:17Z), 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/JPI102302176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9acc2c581f03c2fff9a69266c9cfcaa9debf757c776ddc0ce2d2872e7d4b539a. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:54:42Z), 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/JPI102002029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d9b2a12d0a846994c11bd18493f23b6136cb0e2f81aa3e4d7292bf09135f20. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/JPI102202700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769020f4f46cc2a51318ac6f61e2ec42643113a5b208e9d71de1482fe975aad4. 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/JPI102300049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccbdd62b6014cc181b9e3d80d0f5ff95b69b62701eed4454daeb2f6f5852639. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/JPI102401023.
THE IDOLM@STER SideM F@NTASTIC COMBINATION～PINATATIME!!～ High×Joker
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73fa1e5e3e9b5bd520541e74c597de1709e624e7e3294cbe7b8a5c1fc1343cc. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:26:45Z), 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/JPI102500149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ea1cb64eb5cc122db1efa62e682e7b50eb3f9cac4eb0317ea873bd3e207180. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:36:36Z), 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/JPI102500150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aec6b0c058d69968f3243aee9638dedeba12dbcabb833f5fc6cb4fd132761e0. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:12:14Z), 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/JPI102500151.
THE IDOLM@STER SideM F@NTASTIC COMBINATION～PINATATIME!!～ Café Parade
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73fa1e5e3e9b5bd520541e74c597de1709e624e7e3294cbe7b8a5c1fc1343cc. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:24:39Z), 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/JPI102500149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30690c46141a8e1f1adc4cbd0b7dd527a3ca691afcbbd171cc30df2cc7fd9c79. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPI102500153.