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Safe Pledge: On-chain Accountability for Storage Providers

Safe Pledge is a core mechanism requiring storage providers to prepay potential slashing fees, ensuring they remain accountable to Filecoin’s SLA requirements. From a practical standpoint, the Safe Pledge amount determines the maximum delegation a provider can request.

Safe Pledge = EligibleAsset - BaseTerminationFee - Buffer

  • Eligible Asset: The locked balance in the node minus outstanding delegations and other protocol-defined fees.
  • Base Termination Fee: The expected cost if forced termination is needed, as determined by Filecoin.
  • Buffer: A small margin to handle continuous penalties over a few days.
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If a node’s locked assets drop below critical thresholds, Parasail can take measures to preserve the delegation pool, including forced termination if necessary. Storage providers can only retrieve any leftover collateral once they have fully repaid all pFIL delegations.