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 0xe651d283ce262aa5d394cf192bced94fada825b625cc032fca8a909c01263a58. 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/5140fbb4-bcc5-45aa-9451-02dd1c6a2d54.json and https://artists.proofprofile.net/proofs/artist/5140fbb4-bcc5-45aa-9451-02dd1c6a2d54.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x8fdb64861e7566d42cbf6cc83e78c88acf1b85aa86d0e8d605cb9569f8aa3f09. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPPC01101396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38b9d6bceb7c4ab04561a21da999d263de40c29eea55df37255d3c3cfa596b7. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JPPC01101399.
Yuruyuri Music Yell (Akari & Chinatsu Version)
ゆるゆりのうた♪あるばむ あい♥かわらず・・・。
ゆるゆり♪♪エンディングテーマ 100%ちゅ~学生
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a991c572f9a19f1b1ad994954be9236d75e445043a82a0e36e1aa6d1195a98. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/JPPC01201740.
ゆるゆり♪♪オープニングテーマ いぇす!ゆゆゆ☆ゆるゆり♪♪【通常盤】
ゆるゆり♪♪みゅ～じっく えーる♪ 「京子&結衣バージョン」
Magical Dai☆Dai☆Daibouken! - Nanamori-Chu☆Goraku-Bu in My Little Pony - (Standard Edition)
ゆるゆりのうた♪あるばむ2「 はいっ!テ・ウ・ガ♪ 」-High Tension Ultra Girls-
マジカル大☆大☆大冒険!~七森中☆ごらく部inマイリトルポニー~【通常盤】
ゆるゆりんりんりんりんりん[通常盤]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497d2b58887db275e5342e64fc192963d3ac63ff86da9e094eb2adafabb5ed8a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPPC01402081.
OP Theme "Yurishurashushushu" / ED Theme "Ohirune Universe"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0ce5bba637126366779a627dfc85e4f9cc1b9654cef6622b92e6be138e8fb3. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/JPPC01501159.
Yurishura Shu Shu Shu (Nachu Zansho! Ver.)
Cho Cho Cho! Yuru Yuri Kapuriccho!!! (Standard Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d307f43506b03564a315ae60e12729c171d088eafed870aa82b67b48c0bbe7. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/JPPC01502079.
ゆりしゅらしゅしゅしゅ[なちゅざんしょ!ver.]
主題歌OP「ゆりしゅらしゅしゅしゅ」/ED「おひるねゆにばーす」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0ce5bba637126366779a627dfc85e4f9cc1b9654cef6622b92e6be138e8fb3. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPPC01501159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fd68c64fc169aa6f70ef45b2112e2e0e8a313ebde53253721ce62a0b256e73. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPPC01502084.
ちょちょちょ!ゆるゆり☆かぷりっちょ!!![通常盤]
ちょちょちょ!ゆるゆり☆かぷりっちょ!!!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d307f43506b03564a315ae60e12729c171d088eafed870aa82b67b48c0bbe7. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/JPPC01502079.
ゆるゆり さん☆ハイ!『ちょっとラブソング』
Yes! Yuyuyu☆Yuruyuri♪♪ ("Yuruyuri♪♪" OP Theme Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefc941aabdc5bd16739aa9e23c09338314b354933dafd4ea039a3d78b2ce9bf. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/JPPC01201720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38b9d6bceb7c4ab04561a21da999d263de40c29eea55df37255d3c3cfa596b7. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-02T22:12:38Z), 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/JPPC01101399.
Yuriyurarararayuruyuridaijiken 10th ver.
ゆりゆららららゆるゆり大事件 10周年Ver.
ゆるゆり、てんやわんや☆/リピってチャイム♪
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f15d550745f7744ad39778b46b3ad777c8deefddf0493999150a6ff0535e7a. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:05:08Z), 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/JPPC01900603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552bdb49a4912536b4b134e5dc407660b271448f2586154fceba0a747ad85590. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPPC01900604.
Yuruyuri♪♪ 1st. Series Best Album Yuruyu Rhythm♪
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6b776461d68ea08314f4a83b4da3e9426c731e91551bd6f009cc2a2eccb46c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPPC01101395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdb64861e7566d42cbf6cc83e78c88acf1b85aa86d0e8d605cb9569f8aa3f09. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPPC01101396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38b9d6bceb7c4ab04561a21da999d263de40c29eea55df37255d3c3cfa596b7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPPC01101399.
Yuruyuri♪♪ 2nd. Series Best Album Yuruyu Rhythm♪2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38d6db7df1a3d512067571a160c198809a543b92b45e27dd114340da3415752. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPPC01400750.
Yes! Yuyuyu☆Yuruyuri♪♪ ("Yuruyuri" Op Theme Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefc941aabdc5bd16739aa9e23c09338314b354933dafd4ea039a3d78b2ce9bf. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPPC01201720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a991c572f9a19f1b1ad994954be9236d75e445043a82a0e36e1aa6d1195a98. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPPC01201740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96edf1354d90061b57678de4fafa5ca405678777c93344c5b66ae0b159df1d9. 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/JPPC01201741.