# Bighand (@bighand99) on x

- id: koinon:creator:x_bighand99
- url: https://koinonlink.com/kol/x/bighand99
- schema_version: 1.4

## Identity
- platform: x
- handle: bighand99
- platform_url: https://twitter.com/bighand99
- country: Japan
- entity_type: creator
- person_id: Cross-platform identity not resolved for this creator.

## Reach
- followers: 43909
- following: 48298
- posts_total: 25921
- posts_observed: 1
- posts_per_day: 4.552
- account_age_days: 5695
- verified: true
- size_tier: koc

## Engagement
- status: peak_post_only
- peak_post_engagement_rate: 0.00005
- best_post_interactions: 2
- measurement_source: x_post_interactions
- measurement_formula: interactions on one post — likes, or likes + reposts + replies depending on the discovery path (the two are not distinguishable in the stored data)
- comparable_pool: peak_interactions
- status_note: We have only the single best observed post, so no mean exists. peak_post_engagement_rate is an UPPER BOUND, systematically higher than an average — never compare it against an average rate.
- unit_note: engagement_rate and peak_post_engagement_rate are ratios (0-1); avg_interactions_per_post and best_post_interactions are absolute counts. Read status before reading any number: a null rate has several different causes and status says which one applies here.

## Content
- category: software
- subcategory: devtools
- category_confidence: 0.8
- category_source: derived_from_recent_content
- topics: e-commerce security and data breaches, retail experience and brand accessibility, wearable health technology, digital transformation in business, consumer product reviews
- bio: 某IT系企業で企画営業職。元⚪︎⚪︎区民評価委員。元JASDM。元NDC-TOKYO。JF1ERQ。Retail／Internet／E-Commerce／Marketing／Bioinformatics／WRC　#DX と #農林畜水 を全方位で情報収集中。数字をベースにした議論と透明性が大切と感じる今日この頃。

## Audience (inferred)
- status: present
- description: IT and digital transformation professionals in Japan, with interest in retail, e-commerce, and tech-driven business innovation
- roles: general_ai
- seniority: practitioner
- pain_points: Concerned about data security breaches in e-commerce platforms, Worried about lack of physical retail presence for popular brands like Seven-Eleven restaurants, Interested in wearable tech that provides deep health insights but frustrated by bulky designs
- posts_analysed: 4
- confidence: 0.4

## Commercial (inferred)
- audience_buyer_fit: 0.7
- promotion_intent: 0.6
- open_to_collaboration: false
- contact: Koinon does not publish creator contact details.

## Quality signals
- authenticity_score: 35
- authenticity_basis: engagement_observed
- credibility_score: 70
- flagged_for_review: false
- koinon_bd_grade: C — measures Koinon partner-outreach fit, not creator quality
- interpretation: Signals for triage, not verdicts. A flag means the profile is worth a manual check.

## Evidence
- [x_bighand99#e4cf86e2] No more Hiroshima https://t.co/XC6lBlDZtS (https://twitter.com/bighand99/status/2072915415412662663)
- [x_bighand99#c75fe62f] 美味しそう!! でも近所に不二家レストランがない… 不二家レストランならお子様ランチが食べられる → 食べてみた結果 https://t.co/E5zb5mE93f #不二家レストラン #お子様ランチ https://t.co/bN93ayfmO5
- [x_bighand99#7af28cb2] 40%の小型化で装着感がよくなる大切さ。 「Oura Ring 5」は今買えるベストなスマートリング スマートリング業界を牽引するOuraのリングもすでに5世代目。他のウェアラブルと比べると健康へのウェイトが高いのが特徴。自分の体をもっと知りたい、そんな人向けのアイテム。 https://t.co/RZsg1nPmdQ
- [x_bighand99#6512bbd2] 株式会社BASE、子会社「Estore」で個人情報漏えい 不正アクセスにより最大885万件超 ■発生概要 2026年5月21日から8月1日において、外部の第三者が当社サーバー上で不正なプログラムを実行し、購入者情報を外部へ送信したことにより、購入者情報が漏えいいたしました。 ■漏えいした情報及び対象範囲 漏えいした情報： 【購入者関連情報】 ・購入者情報（配送先情報を含む） 氏名、住所、電話番号、FAX番号、メールアドレス、勤務先、その他お客様が任意に入力した情報 ・会員情報 ※1 会員情報（メールマガジン会員を含む）、会員ID、パスワード ※1 会員I

## Provenance
Every inferred field below carries how it was produced. Facts stay facts; inferences stay inferences.

- audience.description: source_type=ai_inferred, confidence=0.4, freshness_days=21, method=llm_persona_from_recent_content
- audience.roles: source_type=ai_inferred, confidence=0.4, freshness_days=21, method=llm_persona_from_recent_content
- audience.seniority: source_type=ai_inferred, confidence=0.4, freshness_days=21, method=llm_persona_from_recent_content
- commercial.audience_buyer_fit: source_type=ai_inferred, confidence=0.6, freshness_days=78, method=llm_scorer — Relative signal within Koinon indexing, not a market-wide score.
- commercial.promotion_intent: source_type=ai_inferred, confidence=0.6, freshness_days=78, method=llm_scorer
- quality.anomaly_flags: source_type=heuristic, confidence=0.5, freshness_days=112, method=profile_snapshot_and_engagement_ratio_heuristic — Means "worth a manual check", NOT confirmed fraud. Flags can be wrong and are not a verdict about the person.
- quality.authenticity_score: source_type=heuristic, confidence=0.5, freshness_days=78, method=Profile-shape heuristic from a single snapshot (follower count, following ratio, account age, posting volume, verification), reduced for engagement red flags where post engagement was collected. Where only a follower count is available the score saturates at 58. — The input set differs by platform; do not compare this score across platforms.
- quality.koinon_bd_grade: source_type=ai_inferred, confidence=0.5, freshness_days=112, method=llm_partner_fit_classifier + fit_score >= 0.6 AND authenticity >= 60 => A; fit_score >= 0.4 AND authenticity >= 45 => B; else C. authenticity < 30 or a promotional-pattern flag => quarantine. — Koinon partner-outreach fit, not creator quality.
- reach.followers: source_type=observed, confidence=0.95, freshness_days=112, method=platform_profile

## Freshness
- profile_checked_days_ago: 112
- content_analysed_days_ago: 78
- audience_updated_days_ago: 21

## AI retrieval
- indexing_requests: 13
- user_triggered_requests: 0
- note: Being indexed in bulk is not the same as being retrieved to answer a question.

## This profile
- Claim or correct: https://koinonlink.com/claim?k=x_bighand99
- Request removal: https://koinonlink.com/claim?k=x_bighand99
- Terms: https://koinonlink.com/for-ai