Celo Contracts Events.

Account.sol:
  event AttestationSignerAuthorized(address indexed account, address signer);
  event VoteSignerAuthorized(address indexed account, address signer);
  event ValidatorSignerAuthorized(address indexed account, address signer);
  event AttestationSignerRemoved(address indexed account, address oldSigner);
  event VoteSignerRemoved(address indexed account, address oldSigner);
  event ValidatorSignerRemoved(address indexed account, address oldSigner);
  event AccountDataEncryptionKeySet(address indexed account, bytes dataEncryptionKey);
  event AccountNameSet(address indexed account, string name);
  event AccountMetadataURLSet(address indexed account, string metadataURL);
  event AccountWalletAddressSet(address indexed account, address walletAddress);
  event AccountCreated(address indexed account);

GasPrixeMinimum.sol:
  event TargetDensitySet(uint256 targetDensity);
  event GasPriceMinimumFloorSet(uint256 gasPriceMinimumFloor);
  event AdjustmentSpeedSet(uint256 adjustmentSpeed);

GoldToken.sol:
  event Transfer(address indexed from, address indexed to, uint256 value);
  event TransferComment(string comment);
  event Approval(address indexed owner, address indexed spender, uint256 value);

IERC20Token.sol:
  event Transfer(address indexed from, address indexed to, uint256 value);
  event Approval(address indexed owner, address indexed spender, uint256 value);

Multisig.sol:
  event Confirmation(address indexed sender, uint256 indexed transactionId);
  event Revocation(address indexed sender, uint256 indexed transactionId);
  event Submission(uint256 indexed transactionId);
  event Execution(uint256 indexed transactionId);
  event ExecutionFailure(uint256 indexed transactionId);
  event Deposit(address indexed sender, uint256 value);
  event OwnerAddition(address indexed owner);
  event OwnerRemoval(address indexed owner);
  event RequirementChange(uint256 required);

Proxy.sol:
  event OwnerSet(address indexed owner);
  event ImplementationSet(address indexed implementation);

Registry.sol:
  event RegistryUpdated(string identifier, bytes32 indexed identifierHash, address addr);

UsingRegistry.sol:
  event RegistrySet(address indexed registryAddress);

BlockchainParameters.sol:
  event MinimumClientVersionSet(uint256 major, uint256 minor, uint256 patch);
  event IntrinsicGasForAlternativeFeeCurrencySet(uint256 gas);
  event BlockGasLimitSet(uint256 limit);

DoubleSigningSlasher.sol:
  event SlashingIncentivesSet(uint256 penalty, uint256 reward);

DowntimeSlasher.sol:
  event SlashableDowntimeSet(uint256 interval);

Election.sol:
  event ElectableValidatorsSet(uint256 min, uint256 max);
  event MaxNumGroupsVotedForSet(uint256 maxNumGroupsVotedFor);
  event ElectabilityThresholdSet(uint256 electabilityThreshold);
  event ValidatorGroupMarkedEligible(address group);
  event ValidatorGroupMarkedIneligible(address group);
  event ValidatorGroupVoteCast(address indexed account, address indexed group, uint256 value);
  event ValidatorGroupVoteActivated(address indexed account, address indexed group, uint256 value);
  event ValidatorGroupVoteRevoked(address indexed account, address indexed group, uint256 value);
  event EpochRewardsDistributedToVoters(address indexed group, uint256 value);

EpochRewards.sol:
  event TargetVotingGoldFractionSet(uint256 fraction);
  event TargetValidatorEpochPaymentSet(uint256 payment);
  event TargetVotingYieldParametersSet(uint256 max, uint256 adjustmentFactor);
  event RewardsMultiplierParametersSet(uint256 max, uint256 underspendAdjustmentFactor, uint256 overspendAdjustmentFactor);
  event TargetVotingYieldUpdated(uint256 fraction);

Governance.sol:
  event ApproverSet(address approver);
  event ConcurrentProposalsSet(uint256 concurrentProposals);
  event MinDepositSet(uint256 minDeposit);
  event QueueExpirySet(uint256 queueExpiry);
  event DequeueFrequencySet(uint256 dequeueFrequency);
  event ApprovalStageDurationSet(uint256 approvalStageDuration);
  event ReferendumStageDurationSet(uint256 referendumStageDuration);
  event ExecutionStageDurationSet(uint256 executionStageDuration);
  event ConstitutionSet(address indexed destination, bytes4 indexed functionId, uint256 threshold);
  event ProposalQueued(uint256 indexed proposalId, address indexed proposer, uint256 transactionCount, uint256 deposit, uint256 timestamp);
  event ProposalUpvoted(uint256 indexed proposalId, address indexed account, uint256 upvotes);
  event ProposalUpvoteRevoked( uint256 indexed proposalId, address indexed account, uint256 revokedUpvotes);
  event ProposalDequeued(uint256 indexed proposalId, uint256 timestamp);
  event ProposalApproved(uint256 indexed proposalId);
  event ProposalVoted( uint256 indexed proposalId, address indexed account, uint256 value, uint256 weight);
  event ProposalExecuted(uint256 indexed proposalId);
  event ProposalExpired(uint256 proposalId);
  event ParticipationBaselineUpdated(uint256 participationBaseline);
  event ParticipationFloorSet(uint256 participationFloor);
  event ParticipationBaselineUpdateFactorSet(uint256 baselineUpdateFactor);
  event ParticipationBaselineQuorumFactorSet(uint256 baselineQuorumFactor);
  event HotfixWhitelisted(bytes32 indexed hash, address whitelister);
  event HotfixApproved(bytes32 indexed hash);
  event HotfixPrepared(bytes32 indexed hash, uint256 indexed epoch);
  event HotfixExecuted(bytes32 indexed hash);

GovernanceSlasher.sol:
  event SlashingApproved(address indexed account, uint256 amount);

LockedGold.sol:
  event UnlockingPeriodSet(uint256 period);
  event GoldLocked(address indexed account, uint256 value);
  event GoldUnlocked(address indexed account, uint256 value, uint256 available);
  event GoldWithdrawn(address indexed account, uint256 value);
  event SlasherWhitelistAdded(string indexed slasherIdentifier);
  event SlasherWhitelistRemoved(string indexed slasherIdentifier);
  event AccountSlashed(address indexed slashed, uint256 penalty, address indexed reporter, uint256 reward);

SlasherUtils.sol:
  event SlashingIncentivesSet(uint256 penalty, uint256 reward);

Validators.sol:
  event MaxGroupSizeSet(uint256 size);
  event ValidatorEpochPaymentSet(uint256 value);
  event ValidatorScoreParametersSet(uint256 exponent, uint256 adjustmentSpeed);
  event GroupLockedGoldRequirementsSet(uint256 value, uint256 duration);
  event ValidatorLockedGoldRequirementsSet(uint256 value, uint256 duration);
  event MembershipHistoryLengthSet(uint256 length);
  event ValidatorRegistered(address indexed validator, bytes ecdsaPublicKey, bytes blsPublicKey);
  event ValidatorDeregistered(address indexed validator);
  event ValidatorAffiliated(address indexed validator, address indexed group);
  event ValidatorDeaffiliated(address indexed validator, address indexed group);
  event ValidatorEcdsaPublicKeyUpdated(address indexed validator, bytes ecdsaPublicKey);
  event ValidatorBlsPublicKeyUpdated(address indexed validator, bytes blsPublicKey);
  event ValidatorScoreUpdated(address indexed validator, uint256 score, uint256 epochScore);
  event ValidatorGroupRegistered(address indexed group, uint256 commission);
  event ValidatorGroupDeregistered(address indexed group);
  event ValidatorGroupMemberAdded(address indexed group, address indexed validator);
  event ValidatorGroupMemberRemoved(address indexed group, address indexed validator);
  event ValidatorGroupMemberReordered(address indexed group, address indexed validator);
  event ValidatorGroupCommissionUpdated(address indexed group, uint256 commission);
  event ValidatorEpochPaymentDistributed(address indexed validator, uint256 validatorPayment, address indexed group, uint256 groupPayment);

Attestations.sol:
  event AttestationsRequested(bytes32 indexed identifier, address indexed account, uint256 attestationsRequested, address attestationRequestFeeToken);
  event AttestationIssuerSelected( bytes32 indexed identifier, address indexed account, address indexed issuer, address attestationRequestFeeToken);
  event AttestationCompleted( bytes32 indexed identifier, address indexed account, address indexed issuer);
  event Withdrawal(address indexed account, address indexed token, uint256 amount);
  event AttestationExpiryBlocksSet(uint256 value);
  event AttestationRequestFeeSet(address indexed token, uint256 value);
  event SelectIssuersWaitBlocksSet(uint256 value);

Escrow.sol:
  event Transfer(address indexed from, bytes32 indexed identifier, address indexed token, uint256 value, address paymentId, uint256 minAttestations);
  event Withdrawal( bytes32 indexed identifier, address indexed to, address indexed token, uint256 value, address paymentId);
  event Revocation( bytes32 indexed identifier, address indexed by, address indexed token, uint256 value, address paymentId);

Random.sol:
  event RandomnessBlockRetentionWindowSet(uint256 value);

Reserve.sol:
  event TobinTaxStalenessThresholdSet(uint256 value);
  event DailySpendingRatioSet(uint256 ratio);
  event TokenAdded(address token);
  event TokenRemoved(address token, uint256 index);
  event SpenderAdded(address spender);
  event SpenderRemoved(address spender);
  event OtherReserveAddressAdded(address otherReserveAddress);
  event OtherReserveAddressRemoved(address otherReserveAddress, uint256 index);
  event AssetAllocationSet(bytes32[] symbols, uint256[] weights);

SortedOracles.sol:
  event OracleAdded(address indexed token, address indexed oracleAddress);
  event OracleRemoved(address indexed token, address indexed oracleAddress);
  event OracleReported(address token, address oracle, uint256 timestamp, uint256 numerator, uint256 denominator);
  event OracleReportRemoved(address indexed token, address indexed oracle);
  event MedianUpdated(address token, uint256 numerator, uint256 denominator);
  event ReportExpirySet(uint256 reportExpiry);

StableToken.sol:
  event InflationFactorUpdated(uint256 factor, uint256 lastUpdated);
  event InflationParametersUpdated(uint256 rate, uint256 updatePeriod, uint256 lastUpdated);
  event Transfer(address indexed from, address indexed to, uint256 value);
  event TransferComment(string comment);