is a Japanese singer and rapper born in Tokyo. Her career began when one of her videos uploaded to Nico Nico Douga in 2012, when she was 15, received attention. Career The name Daoko (ダヲコ) was origi
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 0x81e6e405c037b80c7f4c8a758266df7ca14b259e8a3dcf698c084d9259dfa50a. 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/d7b545c5-3c8d-47b4-be0c-958d3135fbb2.json and https://artists.proofprofile.net/proofs/artist/d7b545c5-3c8d-47b4-be0c-958d3135fbb2.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 0xcdf41de3647de17037efc8676c739a4569ed0aa41d21c8cc3f6c270010bd0952. 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/JPTF01710201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457a0b2d46883e488f2340f89c76932263f51007ef8f2431e82e89ee245c82ac. 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/JPTF01714701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5ca4d07f9e7acddb9d40cf38b47a54552531c3f60eb5ac3aaedd05179732dc. 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/JPTF01719301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5c5b8812e23588c1cc1db694c309ab36108f3f088cbebe8e3030d7c0336c26. 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/JPTF01513902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b559bc4ce266723915b5b5129e18f4b12750925b1ea1c91094dba7d8e04fe9. 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/JPTF01513901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cb2c52eb00851d9ebabf15f52298284f29984efcc3739bfde2f599bfc9c6f4. 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/JPTF01610001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79ec6dfad552c176704693e5375dd913e5dc45631606152283620a8e1a20e75. 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/JPTF01613702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27dadfa12513c4daf4ffb585674d5c0536418a2ccc3f63a4a5d6adca6caf6c07. 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/JPTF01703701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57af3e01cc0726b4ecbd81d8ab7a88724b282dc5049982a88291f133f973d6d. 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/JPTF01719302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf86a00c698bc87a1a4efc391b38476048a63ba7ac2f84915b69fb581906f20. 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/JPTF01719303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737d5cc254a220f0abfc52c23ddd0eb21e1f3776ddbba5e33468e6efa221b9d1. 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/JPTF01613701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dee0386565edcdbca24f511a5f786e9938dfa0eeabf2549838530f6b8462c38. 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/JPTF01513903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a480508063490dcd7982e648f7071aa2f74ed8e7a2502536b157eb57108e70. 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/JPTF01710203.
ワンルーム・シーサイド・ステップ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8540da64da86ff4d58ee1fd997469160fe2351b309d6875be02568060984dd. 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/JPTF01719304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fca0ceafd8ac95ac6833c06b32d26958c89e76a878b268926f18ae5f6228f57. 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/JPB601903107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbceec41c476e3acedd57aef2bf8b2b76c1225551b386566c8f7d8a8af992ef. 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/JPB601303878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f228d70f8a708909f946fd6571e41004b117934aab687ef3a8a7d5eb3aa1dd9. 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/JPPO02204067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e11f5c91182c4c2005b74ef29b07deaf1739fe580f9d4fa6b7d0aed141d07ac. 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/JP92L2422170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841b5a6ab1435672deb7d5ba142a336f16a1c7a7d5ba75be30f67a27a60cf5de. 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/JPZ922002239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457a0b2d46883e488f2340f89c76932263f51007ef8f2431e82e89ee245c82ac. 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/JPTF01714701.