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 0x7318bb54c6bb73f10bf32e4a0c15e5a6482cf4505542b6cd54b7081d801322f1. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/00c6b803-5fb6-489f-8079-4aed6c796af4.json and https://artists.proofprofile.net/proofs/artist/00c6b803-5fb6-489f-8079-4aed6c796af4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Fumetsu no Anata e (To Your Eternity) Opening 1
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 0x8eaba71f5a4000b37554d6bbeb20299ced269767947ec96c94f95b4763998b48. 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/QZMEN2350197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda9cfde0e8c281dfbe2cd69d75acbc43fb5a9905dc3a31dbc00c0f0c9bcb704. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/QZMEN2370773.
Demon Slayer Season 4 (Opening | Kizuna)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7063731b28c4fb6e74465fbc670f9e16e4b7e1187648cde8dde4f8a8605284de. 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/QZNWV2396838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ba21e29d2cfca9a24b74b908fa04ab6fb85083db25d0ce9feb728a23644df0. 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/QZNWW2333634.
Jujutsu Kaisen Season 2 (Opening | Ao no sumika)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b06e7bff5ee24a0cf8a2d3ad101830e95b74f2dafc514b5dd548841070e134. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZNWY2321679.
Zom 100 (Ending | Happiness of the Dead)
My Happy Marriage (Opening | anata no soba ni)
Mushoku Tensei Season 2 (Opening | Spiral)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2022ca569edfdf04d0675b5a08cb485532d179dcf2973097c3992367805b34. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZTAT2351343.
The Girl I Like Forgot Her Glasses (Opening | Name)
My Love Story With Yamada-kun at Lv999 (Opening | Gradation)
Rurouni Kenshin 2023 (Opening 1 | Hiten)
My Happy Marriage (Ending | Vita Philosophica)
The Rising of the Shield Hero Season 2 (Opening | Bring Back)
Tokyo Revengers Season 3 (Opening | White Noise)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2601780fc00e6f92443d2c59441aa8d7329075abaa8a487fa3ce012251b142. 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/QZTB62311405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41c194ddd40f807d720962a3dfd394656a5b8a7bc32a48cfca6b14611ad02aa. 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/QZTBB2344247.
Captain Tsubasa Season 2 / Junior Youth Hen (Opening | As One)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99c8b4185b287260bf12f857fc84dcbe8facdb6327a5bf2ee3cd862fb32a609. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZTBB2344253.
Attack On Titan Season 4 (Final Part 3) [Opening | The Rumbling]
Jujutsu Kaisen Season 2 (Opening 2 | SPECIALZ)
Tokyo Revengers Season 3 (Ending | Say My Name)
The Apothecary Diaries (Opening 2 | Ambivalent)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6e6617eea74756e24185993b2858535e8014a2f505da4edb392b635bcfaf1b. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/QZFZ32413715.
The Dangers In My Heart Season 2 (Opening | Boku wa...) Boku no Kokoro no Yabai Yatsu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff0e809ad17d044c4b2a575a54ecdc278fe17600a1c0d56ed153e43c01eb375. 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/QZFZ62449617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891166281adb280c3ce8d1065dbf3eece5347f0b38984d11205a3d8d1ea9e562. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZFZ72447487.
Chained Soldier (Opening) / Mato Seihei no Slave
Classroom of the Elite Season 3 (Opening | Minor Piece)
A Sign of Affection (Opening | Yuki no Ne) Yubisaki to Renren
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78951116c033ace9ce70d1a37912c0022f692a7938a052dff8bc58d198f32d8a. 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/QZHN42412648.
Mashle Season 2 (Opening | Bling-Bang-Bang-Born)
KONOSUBA Season 3 (Opening | Growing Up) Kono Subarashii
Henjin no Salad Bowl (Opening | Gifted) A Salad Bowl of Eccentrics
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331f76b8d04d4f5bb771cc54e3b3804a3ec51ac349790107ef3ea0010af315f5. 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/QZMEN2458210.
My Hero Academia Season 7 (Opening | Ta Ga Tame) Boku No Hero
Mushoku Tensei Season 2 Part 2 (Opening | On the Frontline)
Data A Live V Season 5 (Opening | Paradoxes)
Kimi ni Todoke Season 3 (Opening | et cetera) From Me to You
Makeine Too Many Losing Heroines! (Opening | Tsuyogaru Girl)
Days W My Stepsister (Opening | Tenshi-tachi no Uta) Gimai Seikatsu
The Apothecary Diaries (Opening 3 | Season 2)
My Hero Academia: Vigilantes (Opening | Illegals)
My Dress-Up Darling Season 2 (Opening | Ao to Kirameki)