One deterministic memory-hard ticket per wallet, parent and slot.
PBE does not require a minimum stake. Instead, every authorized wallet is eligible to derive a deterministic Argon2id participation proof for a given parent block and slot, while confirmed holdings can improve eligibility timing.
Ticket construction
The challenge commits to network/chain context, the parent block, slot and mining wallet identity. The same wallet, parent and slot therefore produce the same ticket rather than supporting an internal nonce-grinding loop.
Holdings multiplier
A zero-balance wallet remains eligible. Holdings influence the timing window through a bounded schedule but funds are not locked by consensus. The protocol's nominal multiplier bound is 2.50x; because final mainnet issuance is below the schedule's 100 million PBE anchor, the economically reachable all-supply multiplier is approximately 2.4558x.
Fork choice and finality
PBE 0.0.1 uses deterministic fork comparison and canonical-chain confirmation depth. It does not implement cumulative-work selection, a hard checkpoint, weak-subjectivity checkpoint or BFT finality gadget.
Settlement meaning
In PBE 0.0.1, a merchant-facing confirmed state means the exact payment is on the current canonical chain at or above the requested depth. It does not mean mathematically irreversible.
