ExWhyZ, formerly known as Empire (stylized as EMPiRE), is a Japanese alternative idol girl group formed between WACK and Avex Trax in 2017. They have released six studio albums, five EPs, and five sin
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 0xddaa52e000485996adbf7a7977f8385432127f564d04872bed3c5da121d36237. 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/c6fe8709-55a2-4bcf-93a6-44d4fe4e0626.json and https://artists.proofprofile.net/proofs/artist/c6fe8709-55a2-4bcf-93a6-44d4fe4e0626.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 0x53797ebe86cf5788ae3b1cfaa386219daf7e3f74b389efc9542de026cbcf7ce1. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/JPPO02300125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb50e96a8880b10244afb4793fcac1c06842139e7058df173f120c72021ed16. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/JPPO02300128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4adbd967eceed6f8778508d028007a78fbf4546f64cdf1af80341cb014fef8. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/JPPO02203979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50cea78974dfe69462faa63a9cb3c2fe2fee4f7e01a0669ce094666fe780cd62. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/JPPO02203980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea08bc5c233277e0dd29b05579537d35d276210eed53069b2800967b9d6cba4. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/JPPO02203981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e43dec8293cc1196684db4d0cfae1731f7f815489f5c4c4fe93555e419109d. 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/JPPO02202872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad626a76e201b73ad8eec7ff712f376f10efc3194d2e03889baf80c0ebd9fd55. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/JPPO02203984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c64e1897248cd51bf032afcfeebd7eb0f0a41155fc151bc52fc742bfa18f65. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/JPPO02300537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf97fb8f9f43b48b4e4df862b1347b7507af2cad993322b94a29d0f9f9487d7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPPO02300342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe541c15161b31ae451f1e4df728788488d0278519c9e935adfb851001ee2f805. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/JPPO02300539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0acb8e146d3bee10bf1baf963ee45134eb5a9fac41b5d18c73772f95a8a29fe. 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/JPPO02300541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd072bc894eaa3707cb1a33e0b62c02b8a324fd224d54b99ab4e1046b4bc4cb9. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/JPPO02300542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1958633add44f27a5d50a3a11d317a69c3219c87e9a8529833b5a510b92c8b1a. 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/JPPO02300543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb487cc74ae18b2b7150d3d0ddbaea25a923377f2c099227c50823e3ba2665b. 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/JPPO02300544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ae216f2905109fe727c24b0c0091cf3f34d66cb5a19045d75c468ca8ccf7ee. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/JPPO02300545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fa12db2e8679ed19668547bfda07e9b554c11e86f6a2072d432e30179eac41. 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/JPPO02300341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9020489da0180542e1ae94006136f10051996047c65678e46d8eb140f1a6e4a. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/JPPO02302583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1447211eccb2facdc726ecdfa2bcd2c976659b2a97654ef1055aa522beed81. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/JPPO02303223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1833159238bc22872104be6262ecdd4b2893b77c0909377c2a6205923ce8156c. 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/JPPO02302023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfde8c1d9123360909097da839f06ed6afb8f4b2ab6d8e22da8c6ebbf232c8e. 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/JPPO02303224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd746516d7a84206f53fd45d8fc0f975d2e0faa9e1962559bacfc1ed6179fbc18. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/JPPO02303225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3848f381d53b28bde9551328026841b4262a2772b6ada4694e5f3b993f3df549. 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/JPPO02300130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa8fd3fe9cda7f864d5cb6f685e4f18bdbf9281ffa353b4ba75563d44a0e423. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/JPPO02304495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d91cc150555fec81ef5bb297a18889864c03f3e579a027ac68d5cc48bedcbd2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JPPO02400569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebef6cef68357de340796c8e2817a1549747d7f98554042e76bab7868e6d79f8. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/JPPO02400571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065add583d35f273b416033102e20a7fa7a6910752816fe32e5d0da72989873f. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/JPPO02400572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0029c2266b7299eb24cda8ba4fc4b4412218ff5013026b4f03dc19d4d0c06f1. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/JPPO02400573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478e87e68e13aeaa6fefff105091d61ec068946f4df89263efba554b2cfd8633. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/JPPO02400577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcccdec36ea4017ab74a778607cd9d55c3041fc5fbc34695a72813fcf767b157b. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/JPPO02403181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42a842b36ce4aeeb8380a76c76dec440ebd78b50cf2341cc03730619bbe5b92. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPPO02403182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c1103306832950a8bebdde622d6a6b047396c8f8d838970c54d5a2e3581e59. 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/JPPO02403183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46425b08912769b69478a3f3e9f0c3d193799a453d612be7f197d9a842e105d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPPO02403184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322a32e092bd951be03e108801375ec8c09fdda2371a71ad5bfcc01e0e8964cc. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/JPPO02402834.