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Filecoin Onchain Cloud Documentation

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Introduction
- About Filecoin Onchain Cloud
- Why Filecoin Onchain Cloud?
Core Concepts
Getting Started
- Quick Start with Synapse SDK
Developer Guides
- Synapse SDK
- Components
- storage
- payments
  - Payment Operations
  - Rails & Settlement
- React Integration
- Telemetry
CookBooks
- Filecoin Pay Cookbook
Resources
- Contract Addresses
- Additional Resources
API
- Index
- @filoz
  - synapse-core
    
    Index
    
    abis
    
    Index
    
    namespaces
    
    generated
    
    Index
    
    variables
    
    errorsAbi
    errorsAddress
    errorsConfig
    filecoinPayV1Abi
    filecoinPayV1Address
    filecoinPayV1Config
    filecoinWarmStorageServiceAbi
    filecoinWarmStorageServiceAddress
    filecoinWarmStorageServiceConfig
    filecoinWarmStorageServiceStateViewAbi
    filecoinWarmStorageServiceStateViewAddress
    filecoinWarmStorageServiceStateViewConfig
    pdpVerifierAbi
    pdpVerifierAddress
    pdpVerifierConfig
    serviceProviderRegistryAbi
    serviceProviderRegistryAddress
    serviceProviderRegistryConfig
    sessionKeyRegistryAbi
    sessionKeyRegistryAddress
    sessionKeyRegistryConfig
    
    variables
    
    erc20
    erc20WithPermit
    storage
    
    chains
    
    Index
    
    functions
    
    getChain
    
    interfaces
    
    Chain
    
    variables
    
    calibration
    mainnet
    
    erc20
    
    Index
    
    functions
    
    approveAllowance
    balance
    
    type-aliases
    
    ERC20ApproveAllowanceOptions
    ERC20BalanceOptions
    ERC20BalanceResult
    
    errors
    
    Index
    
    classes
    
    AddPiecesError
    AllowanceAmountError
    CreateDataSetError
    DeletePieceError
    DepositAmountError
    FindPieceError
    GetDataSetError
    InsufficientAllowanceError
    InsufficientAvailableFundsError
    InsufficientBalanceError
    InvalidUploadSizeError
    LocationHeaderError
    PollDataSetCreationStatusError
    PollForAddPiecesStatusError
    PostPieceError
    SynapseError
    UnsupportedChainError
    UploadPieceError
    WithdrawAmountError
    
    functions
    
    isSynapseError
    
    interfaces
    
    SynapseErrorOptions
    
    index
    
    Index
    
    pay
    
    Index
    
    functions
    
    accountInfo
    deposit
    depositAndApprove
    operatorApprovals
    setOperatorApproval
    withdraw
    
    type-aliases
    
    AccountInfoOptions
    AccountInfoResult
    DepositAndApproveOptions
    DepositOptions
    OperatorApprovalsOptions
    OperatorApprovalsResult
    SetOperatorApprovalOptions
    WithdrawOptions
    
    piece
    
    Index
    
    functions
    
    asLegacyPieceCID
    asPieceCID
    calculate
    calculateFromIterable
    createPieceCIDStream
    downloadAndValidate
    getSize
    getSizeFromPieceCID
    hexToPieceCID
    isPieceCID
    parse
    uint8ArrayToAsyncIterable
    
    type-aliases
    
    LegacyPieceCID
    PieceCID
    
    variables
    
    MAX_UPLOAD_SIZE
    
    session-key
    
    Index
    
    classes
    
    Secp256k1Key
    
    functions
    
    getExpiry
    isExpired
    login
    revoke
    
    interfaces
    
    Secp256k1SessionKeyCreateOptions
    Secp256k1SessionKeyProps
    SessionKey
    
    type-aliases
    
    GetExpiryOptions
    IsExpiredOptions
    LoginOptions
    RevokeOptions
    SessionKeyPermissions
    WalletEvents
    
    variables
    
    SESSION_KEY_PERMISSIONS
    
    sp
    
    Index
    
    functions
    
    addPieces
    createDataSet
    createDataSetAndAddPieces
    deletePiece
    findPiece
    getDataSet
    getPiecesForDataSet
    ping
    pollForAddPiecesStatus
    pollForDataSetCreationStatus
    setTimeout
    uploadPiece
    uploadPieceStreaming
    
    type-aliases
    
    AddPiecesOptions
    AddPiecesResponse
    AddPiecesSuccess
    DataSetCreatedResponse
    DataSetCreateSuccess
    DeletePieceOptions
    DeletePieceResponse
    FindPieceOptions
    GetDataSetOptions
    GetDataSetResponse
    GetPiecesForDataSetOptions
    PDPCreateDataSetAndAddPiecesOptions
    PDPCreateDataSetOptions
    PollForAddPiecesStatusOptions
    PollForDataSetCreationStatusOptions
    SPPiece
    SPPieceWithUrl
    UploadPieceOptions
    UploadPieceResponse
    UploadPieceStreamingOptions
    
    variables
    
    FACTOR
    MIN_TIMEOUT
    RETRIES
    
    typed-data
    
    Index
    
    functions
    
    getStorageDomain
    signAddPieces
    signCreateDataSet
    signErc20Permit
    
    interfaces
    
    GetStorageDomainOptions
    
    type-aliases
    
    MetadataEntry
    SignAddPiecesOptions
    signDataSetOptions
    SignErc20PermitOptions
    TypedDataType
    
    variables
    
    EIP712Types
    
    usdfc
    
    Index
    
    functions
    
    watchUsdfc
    
    utils
    
    Index
    
    functions
    
    capabilitiesListToObject
    claimTokens
    clientFromTransport
    createPieceUrl
    datasetMetadataObjectToEntry
    decodeAddressCapability
    decodePDPCapabilities
    decodePDPError
    encodePDPCapabilities
    fallbackRandIndex
    fallbackRandU256
    formatBalance
    formatFraction
    metadataArrayToObject
    pieceMetadataObjectToEntry
    randIndex
    randU256
    transportFromTransportConfig
    
    interfaces
    
    MetadataDataSetInternal
    MetadataPieceInternal
    
    type-aliases
    
    ClaimTokenResponse
    ClaimTokenResponseError
    ClaimTokensOptions
    MetadataArray
    MetadataEntry
    MetadataObject
    
    variables
    
    CAP_IPNI_IPFS
    CAP_IPNI_PIECE
    CAP_LOCATION
    CAP_MAX_PIECE_SIZE
    CAP_MIN_PIECE_SIZE
    CAP_MIN_PROVING_PERIOD
    CAP_PAYMENT_TOKEN
    CAP_SERVICE_URL
    CAP_STORAGE_PRICE
    LOCKUP_PERIOD
    METADATA_LIMITS
    SIZE_CONSTANTS
    TIME_CONSTANTS
    
    warm-storage
    
    Index
    
    functions
    
    addPieces
    createDataSet
    createDataSetAndAddPieces
    deletePiece
    getDataSet
    getDataSetMetadata
    getDataSets
    getPieces
    getProvider
    pollForDeletePieceStatus
    readAddresses
    readProviders
    servicePrice
    terminateDataSet
    upload
    
    interfaces
    
    DataSet
    GetDataSetsOptions
    PDPOffering
    PDPProvider
    
    type-aliases
    
    AddPiecesOptions
    ClientDataSet
    CreateDataSetAndAddPiecesOptions
    CreateDataSetOptions
    DeletePieceOptions
    getClientDataSetsType
    GetDataSetOptions
    GetPiecesOptions
    GetProviderOptions
    getProviderType
    Piece
    PollForDeletePieceStatusOptions
    ReadAddressesResult
    ServicePriceResult
    ServiceProviderInfo
    TerminateDataSetOptions
    UploadOptions
  - synapse-react
    
    Index
    
    functions
    
    useAccountInfo
    useAddUsdfc
    useApproveAllowance
    useApproveOperator
    useCreateDataSet
    useDataSets
    useDeletePiece
    useDeposit
    useDepositAndApprove
    useERC20Balance
    useFilsnap
    useFundWallet
    useOperatorApprovals
    useProviders
    useRevokeOperator
    useServicePrice
    useUpload
    useWithdraw
    
    interfaces
    
    DataSetWithPieces
    UseCreateDataSetProps
    UseCreateDataSetVariables
    UseDataSetsProps
    UseDeletePieceProps
    UseDeletePieceVariables
    UseOperatorApprovalsProps
    UseProvidersProps
    UseServicePriceProps
    UseUploadProps
    UseUploadVariables
    UseWatchUsdfcProps
    
    type-aliases
    
    OperatorApprovalsResult
    PieceWithMetadata
    UseCreateDataSetResult
    UseDataSetsResult
    UseProvidersResult
    UseServicePriceResult
  - synapse-sdk
    
    Index
    
    Payments
    
    Index
    
    PDP
    
    Index
    
    Storage
    
    Index
    
    Synapse
    
    Index
    
    classes
    
    PaymentsService
    PDPAuthHelper
    PDPServer
    PDPVerifier
    SessionKey
    StorageContext
    StorageManager
    SubgraphService
    Synapse
    TelemetryService
    WarmStorageService
    
    functions
    
    asDataSetData
    asDataSetPieceData
    calculateLastProofDate
    combineMetadata
    constructFindPieceUrl
    constructPieceUrl
    createError
    dateToEpoch
    epochToDate
    getCurrentEpoch
    getFilecoinNetworkType
    getGenesisTimestamp
    getGlobalTelemetry
    initGlobalTelemetry
    isDataSetCreationStatusResponse
    isFindPieceResponse
    isPieceAdditionStatusResponse
    metadataMatches
    timeUntilEpoch
    validateDataSetCreationStatusResponse
    validateFindPieceResponse
    validatePieceAdditionStatusResponse
    
    interfaces
    
    AddPiecesResponse
    AuthSignature
    ComprehensiveDataSetStatus
    CreateContextsOptions
    CreateDataSetResponse
    DataSetCreationStatusResponse
    DataSetCreationVerification
    DataSetData
    DataSetInfo
    DataSetPieceData
    DebugDump
    DepositOptions
    DetailedSubgraphDataSetInfo
    EnhancedDataSetInfo
    FaultRecord
    FindPieceResponse
    NestedQueryOptions
    PaginationOptions
    PieceAdditionStatusResponse
    PieceInfo
    PieceRetriever
    PieceStatus
    PreflightInfo
    ProviderInfo
    ProviderSelectionResult
    ProviderStats
    QueryOptions
    RailInfo
    SettlementResult
    StorageContextCallbacks
    StorageInfo
    StorageOptions
    StorageServiceOptions
    SubgraphConfig
    SubgraphDataSetInfo
    SubgraphRetrievalService
    SynapseOptions
    TelemetryConfig
    UploadCallbacks
    UploadOptions
    UploadResult
    UploadTask
    
    type-aliases
    
    Address
    DataSetId
    DownloadOptions
    FilecoinNetworkType
    MetadataEntry
    PieceCID
    PrivateKey
    ServiceProvider
    TokenAmount
    TokenIdentifier
    
    variables
    
    ADD_PIECES_TYPEHASH
    CHAIN_IDS
    CONTRACT_ABIS
    CONTRACT_ADDRESSES
    CREATE_DATA_SET_TYPEHASH
    DELETE_DATA_SET_TYPEHASH
    EIP2612_PERMIT_TYPES
    EIP712_ENCODED_TYPES
    EIP712_TYPE_HASHES
    EIP712_TYPES
    GENESIS_TIMESTAMPS
    METADATA_KEYS
    PDP_PERMISSION_NAMES
    PDP_PERMISSIONS
    RPC_URLS
    SCHEDULE_PIECE_REMOVALS_TYPEHASH
    SETTLEMENT_FEE
    SIZE_CONSTANTS
    TIME_CONSTANTS
    TIMING_CONSTANTS
    TOKENS

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Overview
Returns

On this page

Overview
Returns

fallbackRandU256

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function fallbackRandU256(): bigint;

Defined in: packages/synapse-core/src/utils/rand.ts:3

Returns

Section titled “Returns”

bigint

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