Keytalk, styled KEYTALK, is a Japanese rock band. Their album HOT! reached the 4th place on the Weekly Oricon Albums Chart and their single "Starring Star" reached the 7th place on the Weekly Oricon S
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 0x9392e88465858fb3d7396df10bb4d712a77fdc0daa237119b230ad8d073abb1a. 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/62c9b87e-9786-4e72-9cb6-845614c98941.json and https://artists.proofprofile.net/proofs/artist/62c9b87e-9786-4e72-9cb6-845614c98941.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
KEYTALKの武道館で舞踏会～shall we dance?～２ (Live At 日本武道館 2023)
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 0x1a641b6c078ef3d87db9822bf46c497279118724960552c3c60c3cf420a7eedf. 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/JPPO02300447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52749498de2efcf396d7c50f56476fa7de78747eeac7f31ae15fc406c21ab187. 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/JPPO02302514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed9392473cfc92792d544557d7228a53bd3a5b1ba1776e6ec12c050bedb056c. 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/JPPO02300196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385bdfc5ae0174cd18ba85da53f02d06b2cd07269fce763d9ab6e1290015c4aa. 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/JPPO02302516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82b8a0ed48d1604c9a48d28a7f8c1f03027a6ca019c92d91217315d7c2af2da. 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/JPPO02201587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d34722ea41b06039fe394549160af63bafdf062dc5bc91a59a177d8b8d01a2b. 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/JPPO02302518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49176eb34ee448576954b4998bf0e1fface783c825226eb7dfaf7fc6749e2ad8. 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/JPPO02201591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf68c6d7bf1a8751b49b322ca6fd98af26e12c1aca06d889a8f1102281e39256. 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/JPPO02102462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c87cbd2eb1bc2000564d3d11b2fb775f4373d68f5aa4305108e5fbd0834bde. 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/JPPO02102463.
Coupling Selection Album of Victor Years
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc466b6b8253ea050ca44efd9dfbe52f8f34bd57a63aa698704e0865e933ecfd9. 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/JPVI01425150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba041df8211c183e300fd5a1bc715ffb75db71bdc82eb43c895ac6acbf30c246. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/JPVI01500770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6fbada5c89d22716352c495b877f956bfa54e122440cbed4932904fd263e32c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPVI01510070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23647626f29419f31d5ffdd34c8b338b0cd17aec9ef7944ac2e373208034fb3. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:58:21Z), 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/JPVI01510850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce595c548f7a124a2fde23087036741228b4cc2694cb0fdc4e9ee1bd6a35441. 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/JPVI01602120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b21fec0bad429320b4e96c4523991fd29e9bb74d6fda9c24b33b46f67147e5. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/JPVI01605100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2733fc7ee604f4435302f0c12053b5ae1b6f3d1f48364aa15d40c165e366a287. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T08:52:07Z), 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/JPVI01630160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1391ae05e2ef181834fece5d600beab75197336181ff92fc419e63041301cdf3. 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/JPPO01904011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa1f957beafd7e82ecb63bdca0e8f4939f4492320949be20b66e154f591eabc. 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/JPPO01901582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ff6411cd43ad3cc84add549d603ccc5dfef8d6eac3565c53ed5960f7bf3208. 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/JPPO01904012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7620d0333eae809d781c8f90253e9596b5f2da5797ec40cef56a526c8f33c4. 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/JPPO01904013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf75cf10a67c159a0b5173cff088fbde3ac6edf2cb54fea3ad7e1ef1ab3decc3. 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/JPVI01766890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc6e1da535da691387201be89b23c0d2bf9d34fd3829f8782923db1ec3d818b. 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/JPVI01766960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14674ca890bd101089ef4352865acb2c059e5339312a3816acbee41c944d54e. 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/JPVI01766910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c90dbe90e05ac5af9c5fa8816551bc8e6827599636fa202ac3d0b498e6638d. 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/JPVI01766970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918aa07606251f40f80a3c1281a7153fad081aa90ab02acde31a195a47c76126. 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/JPVI01766950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328da28ef8506d363b6e580980fa0a9d6f1e050c9d2c094f3bde53e60e4ac4d7. 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/JPVI01766920.
横浜アリーナ ワンマンライブ 俺ら出会って10年目～shall we dance？～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1042696a4389a2cfa997210e8d9ac8c2289120a8b891e060ba93c5a507e665. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/JPVI01639260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b21fec0bad429320b4e96c4523991fd29e9bb74d6fda9c24b33b46f67147e5. 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/JPVI01605100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce595c548f7a124a2fde23087036741228b4cc2694cb0fdc4e9ee1bd6a35441. 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/JPVI01602120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2733fc7ee604f4435302f0c12053b5ae1b6f3d1f48364aa15d40c165e366a287. 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/JPVI01630160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc592d8a54e52de19de6ee733ad0b85b882e2e10e33afd3575f9e6773f09c232b. 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/JPVI01640280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07ee6d6ecfb94c0611ce3853fe8dc9c0e622c894ee6978bf920781f5a2c56cf. 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/JPB751609002.
KEYTALK no Budokan de Butoukai ~shall we dance?~ (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a641b6c078ef3d87db9822bf46c497279118724960552c3c60c3cf420a7eedf. 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/JPPO02300447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed9392473cfc92792d544557d7228a53bd3a5b1ba1776e6ec12c050bedb056c. 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/JPPO02300196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49176eb34ee448576954b4998bf0e1fface783c825226eb7dfaf7fc6749e2ad8. 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/JPPO02201591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82b8a0ed48d1604c9a48d28a7f8c1f03027a6ca019c92d91217315d7c2af2da. 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/JPPO02201587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf2b74d4c01f657fa5b5b4c81a4a95501c1c7a3928066e69de2ee47a17bd4c2. 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/JPPO02003549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa1f957beafd7e82ecb63bdca0e8f4939f4492320949be20b66e154f591eabc. 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/JPPO01901582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2733fc7ee604f4435302f0c12053b5ae1b6f3d1f48364aa15d40c165e366a287. 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/JPVI01630160.