# Article 4 — Identifiers for legal entities and crypto-assets **Commission Delegated Regulation (EU) 2025/416 · binding · OJ L, 2025/416, 14.3.2025 · dated 29 Nov 2024 [in force]** *In force · Commission Delegated Regulation (EU) 2025/416, OJ L, 2025/416, 14.3.2025 · Checked against EUR-Lex on 26 Oct 2026 · [Official source](https://eur-lex.europa.eu/eli/reg_del/2025/416/oj/eng)* 1. Crypto-asset service providers operating a trading platform for crypto-assets shall identify legal entities in order book records by using the entity identifier in accordance with Article 14 of Commission Delegated Regulation establishing technical standards adopted pursuant to Article 68(10), first subparagraph, point (b). 2. Crypto-asset service providers operating a trading platform for crypto-assets shall identify crypto-assets in order book records by using the asset identifiers in accordance with Article 15 of Commission Delegated Regulation establishing technical standards adopted pursuant to Article 68(10), first subparagraph, point (b). 3. Where using the Legal Entity Identifier (LEI) to identify legal entities in accordance with paragraph 1, the crypto-asset service provider operating a trading platform for crypto-assets shall ensure that the length and construction of the LEI code recorded in the order book records is compliant with the ISO 17442 standard and that the LEI code is included in the Global LEI database maintained by the Central Operating Unit appointed by the Regulatory Oversight Committee, and refers to the entity concerned.