Source References: Code citations link to raw GitHub files pinned to commit 46bad16d.

Proceeds Split Migration

When to use

• Launch uses UniswapV4MigratorSplit path
• You need to configure a recipient proceeds share and top-up distribution
• You are debugging migration payouts and split accounting

Prerequisites

• Confirm migrator module and hook addresses
• Confirm TopUpDistributor deployment and pull-up permissions
• Confirm token ordering (token0 < token1) and asset orientation (isToken0 in split config)

Core workflow

1. Configure migrator initialization data:
   • V4 pool params
   • locker settings / beneficiaries
   • proceeds split recipient and share
2. If split enabled (proceedsShare > 0), migrator stores SplitConfiguration via _setSplit.
3. Approve migrator in TopUpDistributor via setPullUp(migrator, true) from Airlock owner.
4. During migration:
   • compute balances
   • _distributeSplit(...) transfers split share to recipient
   • TOP_UP_DISTRIBUTOR.pullUp(...) forwards cumulative top-ups
5. Verify final balances and DistributeSplit/PullUp events.

Critical constraints

• MAX_SPLIT_SHARE = 0.5e18
• split recipient must be nonzero
• only approved migrators can call pullUp
• top-ups are pair-specific and cumulative until migration pull-up

Failure modes

• Migrator not approved in TopUpDistributor
• Wrong isToken0 orientation causing split on wrong side
• Share exceeds cap or recipient is zero
• Assuming top-ups are recoverable without migration

References

• CONFIG.md
• FLOW.md
• Source: doppler/src/base/ProceedsSplitter.sol, doppler/src/TopUpDistributor.sol, doppler/src/migrators/UniswapV4MigratorSplit.sol

Related skills

• v4-multicurve-auction
• fee-architecture
• verification