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 0x46c4a3be9d3a36950816f46b379fae8b4204fd46b914585e50c987a69307e600. 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/64174bdd-6a48-49b3-9f37-0409ceec1e94.json and https://artists.proofprofile.net/proofs/artist/64174bdd-6a48-49b3-9f37-0409ceec1e94.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
THE IDOLM@STER SideM ST@RTING LINE-14 F-LAGS
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 0x07c570742692e27cdca7c944e5939c9199cb53f88d22f9862a911dfff1966734. 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/JPI101602143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437e8b5ba2e5958e19d7c44a40a2f42e9abe1af29adae6cd329f27bf2edf91cc. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPI101602145.
THE IDOLM@STER SideM NEW STAGE EPISODE：15 F-LAGS
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d875c165a4e01c2fa19d81cfcf8c92ace99930f1ab716f28541a816204dfea. 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/JPI102100799.
THE IDOLM@STER SideM NEW STAGE EPISODE: 15 F-LAGS
THE IDOLM@STER SideM GROWING SIGN@L 10 F-LAGS
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d25b37561fb69b4cd7a88c47d36ec2b8eb86b7adcb3b1bec91ab63a6d178b74. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPI102200792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe958b6339863b9fe2130a44555043a3da4d870dcb28a8b1d5ef1134f93526b6a. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:47:22Z), 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/JPI102201740.
THE IDOLM@STER SideM 49 ELEMENTS -10 F-LAGS
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21db0a735daf79c70d684f5f571a2c1d802a0f00683ede44a5a597ec8679dc22. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/JPI102300464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53373a521fe3eb4163681203a8d66cd64d8693cb29de60ba270b538ebe8477f. 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/JPI102300465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e315143c2a19e72ca233dc3fc393c69d3a4c6b3f82df1d425c5807e9cdbc688. 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/JPI102300466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9cd6e4975fe2811a97c71a037cc522e4f6f968fa76c76706a9cd8a5c2a06cf8. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/JPI102300467.
THE IDOLM@STER SideM CIRCLE OF DELIGHT 07 F-LAGS
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a745fa499f3e740599f5bd65d5056fd013ab1e2e3a2af21e1a528508e630c2. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/JPI102400554.
THE IDOLM@STER SideM 10th ANNIVERSARY P@SSION 14 F-LAGS
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d73a3581ad69630b6fe49a2dba8c2a2d4c7d0024af77faefaced357d27e5da4. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:17:30Z), 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/JPI102101619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7f3d2ebb94c00f9ee3ad4e96624c2f5c317838691c5593417bce59f7ddb256. 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/JPI101800560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65e6c5c57a841cc4d71014746ced0a6f6d5ca842def7593ded1bbfe20df5dfe. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:29:03Z), 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/JPI102101620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad1777bf35ff6af40385a7ae5aef7a343d4f46d7ce903b8648587a6b32b1785. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/JPI101800562.
♡Cupids! - 九十九一希 ソロVer. (10th ANNIV. Ver.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118acd0529238aaa4719d8084d7daaa44a8b832e24ae8bf37d65c6b7ab7d269c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:46:14Z), 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/JPI102500750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5270618463272f1fc635dbec5735290f104dbbb04ab5dfdff9d435f053b32e. 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/JPI102500748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ac82eddc118627539d3b090d0dd3b14448ed2c4e1f911d1f391b3479337a48. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:52:30Z), 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/JPI102500749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d875c165a4e01c2fa19d81cfcf8c92ace99930f1ab716f28541a816204dfea. 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/JPI102100799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d25b37561fb69b4cd7a88c47d36ec2b8eb86b7adcb3b1bec91ab63a6d178b74. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPI102200792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe958b6339863b9fe2130a44555043a3da4d870dcb28a8b1d5ef1134f93526b6a. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/JPI102201740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb020e5c5f39655a11bde2c6e850d48ee277ea62328748fc7ec63060fc5d8f43e. 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/JPI102400556.