READABLE MESSAGE REQUEST TEMPLATE — DO NOT SIGN WITHOUT REVIEWING THE REQUEST

Requesting service/site: [exact expected service]
Purpose and action allowed: [plain-language action; not a payment authorization]
Address and network/protocol: [specific supported address and signing format]
Challenge nonce: [new unpredictable nonce issued by requester, one use only]
Expires UTC: [YYYY-MM-DDTHH:MM:SSZ]

Response fields: exact signed text, exact address, signature, signing format.
Do not include a seed, private key, wallet file, private descriptor or password.

The requester must verify the signature AND enforce their own challenge binding,
expiry and single-use rules. Writing these fields in text does not make Core
enforce them. This blank template is not an authentication implementation.