(real name , née , born May 10, 1961) is a Japanese enka singer. She is signed onto Sony Music Japan. Born in Kakunodate, Akita, Fuji graduated from Akita Prefectural Kakunodate South High School.藤あや
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73e72914f9e30795398e4f1385154ee5b8dff194c3c7e0aa7d48ce5ca402aa6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d26e5733-93cb-4646-ae7a-660460aa7438.json and https://artists.proofprofile.net/proofs/artist/d26e5733-93cb-4646-ae7a-660460aa7438.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb852b4f7f4532609ce0a38ac9714bf9b028881acbb7d4c52052c6f31623053ed. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:41:56Z), 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/JPSR09184219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762b258397a18830bfdb999672c51e26965697a6688751ec81234418379d95f6. 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/JPSR09184218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a38fe48408e3aa3d30aa13da854db71059e7b32129aab627bd355df207c29e. 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/JPSR09150061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530717a95af731294bd1386765d99cc6e1f4715bf389f879a57d4073ab55e136. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:35:40Z), 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/JPSR09712652.
あや子のお国自慢だよ～がんばろな東北！！～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc2a710dc33ca1d5fa76af8b1b43a8c3ba35c590a7ac3310ef9af05a0b41464. 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/JPSR00801063.
藤あや子 特選演歌・ヒット全曲集
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ead485ae415148509ec0dea949830f2121811703891d626f3131b24ba2194c. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/JPSR00702481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ad5b72469df40f2ad7518b23392329f800956966439b3e5a47a9a9afe4871d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPP401101501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd157fd6fd7342a59412ec4ca82e48385affc264565000c0e6b6a0f43498480. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/JPU902201469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8525e0daad2b8d8d545382c5e95e474f2e7a399778063928863ea940adfb4f9c. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/JPU902301451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4fc6e7b09c238404892061f1187013d88f3a031580129c7f80074dbfa8284e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPSR09916202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3028ef4031a131afea3c97added2a03a40f1a7ddb5f3f69970087f05a8789d0d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPP401600403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ebb39b85a87eb0dbea1438a8d02a0c6408251d0513ead5ae12aa2dda123da7. 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/JPU902401873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ebb39b85a87eb0dbea1438a8d02a0c6408251d0513ead5ae12aa2dda123da7. 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/JPU902401873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea54444ca2af236c163bfdf2c00a1340a2f079683a08a57572672faa0c8f03fb. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:51:48Z), 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/JPP401500356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad75d85698e0c106ceceead9bc956f3ae17bac9177d4388f8309f89d8399f7f. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/JPSR09700114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a96a7c48ef68e6ae73b74d42e551f80593e849d0c33145218eb552b02de2566. 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/JPP402100121.
想い出づくり / 小さな鐘の音～ラ・カンパネラ～
秋田の行事 (feat. 柳葉敏郎, 藤あや子, 佐々木希 & 秋田県人会)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b191698bb8d47f539d56612f4153ab64553cd5ea97c3a070b7e69eb6ce609d9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPWP02201292.
山口百恵トリビュート・セレクション
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc0dec62eca9d79f35e2682f35583f8d66fe3ed0bc13b29126835068bc2c8a6. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/JPP401100228.
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