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Version: Firesquid

Archives Explorer API

substrate-explorer provides a GraphQL API for historical blocks, events, calls and extrinsics. Subsquid maintains explorers for most parachains. To get an explorer endpoint, go to Aquarium Archives, click on the network of choice and locate the Explorer URL link.

The API is derived from the OpenReader schema below and allows filtering, pagination and nested queries for most fields. Not that not fields are indexed and thus some queries may appear to be slow.

Block​

type Block @entity {
    id: ID!
    height: Int!
    hash: String!
    parentHash: String!
    timestamp: BigInt!
    spec: Metadata!
    validator: String
    events: [Event!]! @derivedFrom(field: "block")
    calls: [Call!]! @derivedFrom(field: "block")
    extrinsics: [Extrinsic!]! @derivedFrom(field: "block")
}

Extrinsic​

type Extrinsic @entity {
    id: ID!
    block: Block!
    indexInBlock: Int!
    version: Int!
    signature: JSON
    success: Boolean!
    error: JSON
    call: Call!
    fee: Int
    tip: Int
    hash: String!
    pos: Int!
    # all internal calls
    calls: [Call!] @derivedFrom(field: "extrinsic")
}

Call​

Calls are more granular than extrinsics. Calls are used to unwrap util.batch, sudo and proxy extrinsics.

type Call @entity {
    id: ID!
    parent: Call
    block: Block!
    extrinsic: Extrinsic!
    success: Boolean!
    error: JSON
    origin: JSON
    name: String!
    args: JSON
    pos: Int!
}

Event​

type Event @entity {
    id: ID!
    block: Block!
    indexInBlock: Int!
    phase: String!
    extrinsic: Extrinsic
    call: Call
    name: String!
    args: JSON
    pos: Int!
}

Metadata​

type Metadata @entity {
    id: ID!
    specName: String!
    specVersion: Int
    blockHeight: Int!
    blockHash: String!
    hex: String!
}