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+BIP: 1043
+Title: User Age Verification for Wallet Software
+Author: Brigson
+Status: Draft
+Type: Informational
+Created: 2026-03-21
+
+## Abstract
+
+This BIP proposes a standard for wallet software to optionally store 
+a user-declared date of birth as a wallet metadata field, allowing 
+downstream applications to perform age-based access controls in 
+compliance with regional regulations such as California AB-1043.
+
+## Motivation
+
+A growing number of jurisdictions require software to implement age 
+verification mechanisms. A standardized field would allow ecosystem-wide 
+compliance without requiring repeated per-wallet implementation effort.
+The field is self-declared — it is the responsibility of the consuming 
+application to determine whether further verification is required.
+
+## Specification
+
+Wallet implementations MAY include a `birthDate` field formatted as 
+YYYY-MM-DD. The field is OPTIONAL globally and SHOULD only be presented 
+to the user when the wallet detects a jurisdiction where age verification 
+is legally required.
+
+## Rationale
+
+Self-declared age satisfies the minimum technical requirement of several 
+regulatory frameworks requiring only a "reasonable effort" at age gating.
+Stricter verification (KYC) remains out of scope for this BIP.
+
+## Backwards Compatibility
+
+This BIP introduces no consensus changes. Wallets not implementing this 
+field remain fully compatible.