FictionJunction is the solo project of Japanese composer Yuki Kajiura featuring guests musicians, mainly singers. Historically, works between Kajiura and a vocalist were referenced by adding the singe
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 0x91c61f62254c0f96999cafb12c39be77a99cf6dfafba689c349fade41936391d. 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/bc058cac-70ba-418a-b40b-ca458a3a028f.json and https://artists.proofprofile.net/proofs/artist/bc058cac-70ba-418a-b40b-ca458a3a028f.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 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 0x859ff2c170bdef8babe1d39093d0ff118bdcb9c9c6ef2b659767b947b7699ea1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPG750900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba81192a37e567c402867bb3a85fe079f06923c103c1ba327a59e858ed239fc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPG750900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af32b2dd54c757504c79ede994f5605933dd980394ba8e0cd4ee7f8fae092f9. 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/JPVI00618480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b938a96748f7ba7959688e6eee11cb46d74d95b79a44c84e85fea175964d407. 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/JPG750900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7c29d94aeb8c63f44d12b34fe0f8973068a3e68fbd7302c3fa9262cd9b1dcf. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/JPG750900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22dfc12bf302253ca032e3c09a578563b37e1216db570bca9f31b522087cf4f5. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/JPG750900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fce1f736f5ec1daebbd98937ee42d170b31727535586b2c26a3a2426280a7a. 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/JPVI00732190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce0553ef0ff172d2f56d93243d6692da2c1bba5e7259e9bc5353b03e90e3a64. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/JPG750900009.
「PandoraHearts」オープニングテーマ Parallel Hearts
「おおかみかくし」オープニングテーマ 時の向こう 幻の空
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574b9956c98434dcea1b7c71e9c06d1468dcdaefdaeeb949f175422376e08045. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/JPG750900882.
「セイクリッドセブン」オープニングテーマ stone cold
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a19e3a811a88d8887b503913a6d9355659edb8b815cdb1ec0793f2b99ec1bf3. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/JPG751300604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89ff6f831acedf46ea9816ad24647781afe33a1ad5bcca7f4a78235cbbdeaa0. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/JPG751300605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd72ed711cd71956ac26246ce6056441dc440579b1f8412a430ec6e2835db26f. 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/JPG751300606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331a9b0cbbc6fc6173af83b1159ca8b57612132f2eb9503b47c3763952541fe7. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/JPG751300607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c23118c520e7019d96eebfa92269423b29f779a269c7513597a080c7ad557a0. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/JPVI00709890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14ccd04a3d3ceab43b180372ec9f631fbcdbd391cb23111b27181dbd7642b3a. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/JPG751200205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cc7050ac45a2fae622b0ef215930fb0a7b249be3f1770a132674a792cab80f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPU902203388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45a44e58fa69858acc3b551487244c3bf9c62525a45e34ae616e4754d8d1d93. 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/JPU902301128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d99c120f28d879d7a97967daae1ee3a4f76d42e0d5704fc765ec4f6b12f1d1b. 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/JPU902301129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17aacd6e52314a913f1be8065d32b5397f3e3c82f1ab2eac8707e2595263a2ae. 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/JPU902301130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2bba43ac8c71037873641e30b29092f6c484980f7e6d0067f4f0e2ce9232bf. 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/JPU902301131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d371e8f3cfd32bf0e3210af0d85c5a2f8f1084de29012ed2534d33abcf0479. 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/JPU902301132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3b6654fb51be12fd6d0f9dc176a8e18c1e5bfa65c3b3eeade4f4079b2b1d7f. 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/JPU902301133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cc7050ac45a2fae622b0ef215930fb0a7b249be3f1770a132674a792cab80f. 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/JPU902203388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6629347264f08a6f533652b6766af707f1de9bda7777d434d750881a417ad2b. 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/JPU902301134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e367f2218dca36d482443a5d285d6536f718885b3892d8122accc4aed2508d. 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/JPU902301135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f64888cb101756745578be8dfbd6738a421d2753668fb035042b0b90c81e4b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPU901902061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294baf8cad0cdaade374bb659ce66452080f7ff29c3b75a2d63b87d1f45c1d0f. 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/JPU902301136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bad85bd889aa778d7189422f451da79e7272b8100417802f935b98df1adc5ba. 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/JPU902301137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee29e9a590f65443ec02b11373fb6ce293b6937fc4753e1d36375fc2f52327ec. 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/JPU902301138.
ツバサ・クロニクル ベスト・ボーカル・コレクション -edit version-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032ed678afbd989fb806e7a7fe88d81c33084149bed3b9cb0c1dd8cbfb265cba. 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/JPVI00528080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af32b2dd54c757504c79ede994f5605933dd980394ba8e0cd4ee7f8fae092f9. 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/JPVI00618480.