(born January 26, 1948) is a Japanese jazz pianist and composer. Biography Takase was born in Osaka and started to play piano at age 3. Raised in Tokyo, she studied classical piano at Toho Gakuen Sc
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 0x0e121d8be1a48cc28b56bb7c3df5b3add1d263f3bb19bca57d652f7010331669. Chain 2 (Bitcoin): anchored in block 953599 (2026-06-14T06:43:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ea295ee-d328-4c88-bb53-64b5c1fa4fd0.json and https://artists.proofprofile.net/proofs/artist/0ea295ee-d328-4c88-bb53-64b5c1fa4fd0.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 0x146b366759ded14e78f960ee6d3d8f5ae86691c90873d71a1569ba7d0dd495f3. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/DEAM82400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab0852e19a2c672496cb318616e8ad5012abe07265ab73f3e12a472322893fd. 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/DEAM82400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0310cdadc63aa29211ee2dbd789249ec86b67c7615148576ddffa04ad1c626f2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEAM82400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac256ae819017742f7aadd467df5d500edd3fc139622ebaa13c30ae94d3dc0d8. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DEAM82400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3794ad70421bc4d62ad0b06e57bb747e4d2bd29b9a9147d31cd2706c205906. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/DEAM82400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892b742527ea8931a516d039740acfe0a1ac3fe8ca5c6f795a4f8fc5d7f161a8. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/HUA152433101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7b09d96b8db5c6ce631b66ad0a8fed90b5abb93ea998f40beb52d47a9ae789. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/HUA152030113.
Aki Takase Plays Fats Waller at Babylon Berlin (Live, Berlin, 2009)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce250a8f8080516bd4bb1ccf49d885ab21bbcfb95bc6f68def7a9ec1ac10b30d. 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/CH2702003976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63eabb791eefb9c0192764db149b91eca54e98566586dea418f0b77d0fb0f6b1. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/CH2701903819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6870a81ebc4794bab8bf5601863274bc57d42870449184329d92edd1ba343022. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HUA151826802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f86350c61bae5f17f092f827c7ebbe6d2151e6c0e3bf85c7dd0c2c1a963d80a. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/CH2701602976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d515bf11164d82ef6487a11e98fd739af72aa8f12274b472584569832436e7c. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/CH2701602977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7653a62d895ff6537dbb417203d13e5c691b762ce1bcdeb7b0f896c3af628cef. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CH2701502393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8080f32dc0a54f8a0e7e117a7db5a3493fc089444b2615dbe761ef152dcf238. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DEAM80100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41455e2b159d6e92bd076cfdf66b874f3e7f980025133948d611cc6a0c244690. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEAM89200020.