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// Copyright (C) 2019-2024 Algorand, Inc.
// This file is part of go-algorand
//
// go-algorand is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// go-algorand is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with go-algorand. If not, see <https://www.gnu.org/licenses/>.
package ledgercore
import (
"github.com/algorand/go-algorand/crypto"
"github.com/algorand/go-algorand/data/basics"
"github.com/algorand/go-algorand/data/bookkeeping"
"github.com/algorand/go-algorand/protocol"
)
// StateProofVerificationContext represents the context provided by the ledger to verify a state proof transaction.
type StateProofVerificationContext struct {
_struct struct{} `codec:",omitempty,omitemptyarray"`
// LastAttestedRound is the last attested round of the state proof verified using this data.
LastAttestedRound basics.Round `codec:"spround"`
// VotersCommitment is the vector commitment root of the top N accounts to sign the next state proof.
VotersCommitment crypto.GenericDigest `codec:"vc"`
// OnlineTotalWeight is the total amount of stake attesting to the next state proof.
OnlineTotalWeight basics.MicroAlgos `codec:"pw"`
// Version is the protocol version that would be used to verify the state proof
Version protocol.ConsensusVersion `codec:"v"`
}
// MakeStateProofVerificationContext produces a new StateProofVerificationContext instance from a block header and last attested round
func MakeStateProofVerificationContext(votersHdr *bookkeeping.BlockHeader, lastAttested basics.Round) *StateProofVerificationContext {
return &StateProofVerificationContext{
VotersCommitment: votersHdr.StateProofTracking[protocol.StateProofBasic].StateProofVotersCommitment,
OnlineTotalWeight: votersHdr.StateProofTracking[protocol.StateProofBasic].StateProofOnlineTotalWeight,
LastAttestedRound: lastAttested,
Version: votersHdr.CurrentProtocol,
}
}
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