JP crypto tax rules — category cost_basis (structured rules-as-code)

category : cost_basis
rules    : 1

jp.crypto.acquisition.cost.method.individual [current] : 個人の暗号資産の取得価額の評価方法

General tax-system information from public sources only (NTA crypto-asset tax FAQ, e-Gov statute texts, MOF tax-reform documents) — not tax advice.
access   : free — GET https://jp-crypto-tax-rules-62ko7b2uwa-an.a.run.app/v1/rules?category=cost_basis

• Rule list API (free): cost_basis
• Full rule (free): jp.crypto.acquisition.cost.method.individual
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• Data catalog