Livetune (stylized in lowercase) is a Japanese electro band which formed in 2007 as a dōjin music circle signed to Toy's Factory. The band originally consisted of two members, Kz and Kajuki P, but Kaj
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 0xb98652f886be101a4ff87b4715148c35f0626818d9db43651630b7d1dbf07782. 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/79bee95e-9c3f-4c41-bf85-dcfd5ffe665d.json and https://artists.proofprofile.net/proofs/artist/79bee95e-9c3f-4c41-bf85-dcfd5ffe665d.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 0xfe8afcd3de19d41a1b01d2c9946c36638b7c91347259f17b9a590ac1783e22af. 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/JPTF01190355.
Hand in Hand-初音ミク「マジカルミライ 2020」Live- (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7211c6deede74d2d5242a1b4b09d8d78047f1794f56d8d6fb1a33785bbdb0028. 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/JP92Q2200224.
Tell Your World-初音ミク「マジカルミライ 2021」Live- (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44bc1bf7eca36cca6be36933d6eb5d88805414e799d1f55fe545cfba089bf98. 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/JP92Q2301561.
Hand in Hand-初音ミク「マジカルミライ 2021」Live- (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30209dde7fa900a60a607f3b822341e69d3490001ecc4b31b7e2bfef5c730bfa. 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/JP92Q2301563.
Hand in Hand-初音ミク「マジカルミライ」10th Anniversary Live- (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85968488a3e1b44c1acc0fdc0c8d5bc8006f82d42de2cc16a71fef9a723eb9bd. 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/JP92Q2400680.
DECORATOR-初音ミク「マジカルミライ」10th Anniversary Live- (feat. 初音ミク)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5681f941d0756ac8b220c347e528d511ce46fb5da398ace0fe5233076b6a6399. 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/JP92Q2400681.