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No one chooses pairs

Pairing is deterministic and on-chain:
  1. Bucket — Your token’s market cap maps to a bucket (e.g. 30 SOL → 800 SOL in steps). Same formula for everyone; no manual buckets.
  2. Window — Time is split into slots (e.g. slot / window_size). Everyone in the same slot shares the same window.
  3. Match key — Blake3(mint || bucket || window) % match_key_space. Two tokens in the same bucket and same window that collide in this key space form a duel.
So: who you’re paired with is fixed by (mcap bucket, time window, and the hash of your mint). No backend, no relayer, no admin chooses “Token A vs Token B.” If two tokens land in the same (bucket, window, match_key), they duel; otherwise they don’t.

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No one chooses the winner

Resolution is rule-based and checked on-chain:
  • When a duel is matched, a target market cap is set (e.g. 110% of the bucket’s reference).
  • When any buy or sell causes either token’s post-trade market cap ≥ target, the duel can be resolved.
  • The program requires: winner_mcap >= target or loser_mcap >= target, and winner_mcap >= loser_mcap. So the “winner” is always the token with the higher market cap at resolution. The relayer only submits the tx; it cannot assign a different winner—the program rejects it.
You can verify every duel by reading chain state: same (bucket, window, match_key) → same duel PDA; resolution only succeeds when target is reached and the higher-mcap mint is passed as winner.

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What you can trust

ConcernHow it’s handled
Who gets paired?Derived from mcap (bucket), slot (window), and Blake3(mint, bucket, window). No off-chain pairing.
Who wins?Program enforces: target reached and winner_mcap ≥ loser_mcap. Relayer can’t flip the outcome.
Mercy rate?On-chain: loser SOL → winner tokens into mercy vault. Your claim = (vault balance × your loser token balance) / total loser tokens in circulation when the duel resolved.
So: permissionless (anyone can launch and trade; matching is automatic) and verifiable (pairing and resolution follow public, on-chain rules—no party can control which tokens duel or which token wins).