is a 2023 Japanese animated science fantasy drama film. Produced by MAPPA and distributed by Warner Bros. Pictures Japan, the film is directed and written by Mari Okada. The film debuted in Japanese
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 0x6bc732a2bea07ece8a6a67d3172590e92853791ffafd8a50285eda5c0ecdd3b3. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4278aef5-511c-4c5e-b8ee-b154606f795f.json and https://artists.proofprofile.net/proofs/artist/4278aef5-511c-4c5e-b8ee-b154606f795f.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 0x2b74ce9f06d015d787fe102e5c1793a9c26ab94c3e52c457c45d71d92b9a6dff. 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/JPKS00401581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241000c1db2766e8c65d5537860cf95ff10d5021d8d02d6ff430649c24d2ae0a. 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/JPKS00401081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c16136d09152f6ede6cc97e2138054868540e3c8c0d1f7ab6445382c288746. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPKS00401582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd962b3f3cae8d19f7bb2d5bfd9b51275370feec478e6fe4d618a448948a37b. 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/JPKS00401584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd5f2db8975c3d36383596efcb9766c01e28ccec3b546e706bcf071e7cba120. 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/JPKS00401585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd130b717dfd94ed67fd734790c668f87b85c0bc1033ea3547e46d96e626d2598. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPKS00401587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e63ec008f91898441e9b37b51389abda43533c03dfe9f05e1488b5cd8baaf0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPKS00401589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e81df4bbfa2b66686cac64be2f6e9d8a90a3d6795308b641a5c885495cf9f22. 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/JPKS00401590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3500865cc02e92e01b0534c16369be972e198e866ecb91c8b517545827aa5a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPKS00401591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb82fcc1b094556ca3c09bb999e64a3bd709dde721cd8935c15562620268c61. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:42:02Z), 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/JPKS00401541.
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 0x078ba3849d9359d163cda8e0a98094f536210963dacc470a4cb4ec14beeeb066. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/JPKS00401586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1c515fbae531f5ccde588956829693e83b8f75748ee13ee2cafa5faee467f3. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/JPKS00401588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf80ca7d23b666b83f7302e20e5cc2ea6bcb61f0277095490952cc2d96d262b. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/JPKS00401082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa386b501964c64cc4d574e4655b0271dbc6bfbfd1ba107931885f9e123157b1c. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/JPKS00401592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdf22326f2d093d0310b8c436d7377b20183d3c65666a2e55af8ba625fd3752. 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/JPKS00900265.
FAMILY TREE 〜Side Works Collection Vol.1〜
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d43c1a50f9be889bd2516f100bd7ba6e663fe056182e3e3004d804cc409be93. 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/JPKS00601541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc307e869957956a2106226150092174f11214fd5a817ba51d2629a8c6785e5b5. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/JPFL00900230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845a38f9b4a15a4c3909bc5ab96e91baf9c726a01ae783d64bdc85d86a57bf0f. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/JPVI00544210.