Schema

GET https://api.bloklake.com/v1/chains/{chain}/v1/schema

No key needed, not billed.

Example

curl https://api.bloklake.com/v1/chains/rh/v1/schema

{
  "families": ["base", "arbitrum"],
  "row_types": {
    "transactions": [
      {"name": "hash", "dsl_name": "hash", "arrow_type": "FixedSizeBinary(32)",
       "nullable": false, "family": "base", "available": true},
      {"name": "mint", "dsl_name": "mint", "arrow_type": "FixedSizeBinary(16)",
       "nullable": true, "family": "op_stack", "available": false}
    ],
    "logs": [ … ],
    "blocks": [ … ]
  }
}

Response

string[]

The field families this chain has: base (Ethereum’s own fields), arbitrum, op_stack.

object

For each row type (transactions, logs, blocks), its fields in output order:

Show field

string

The column name in responses (snake_case).

string

The name to use under fields in requests (camelCase).

string

The Arrow type, e.g. UInt64, FixedSizeBinary(20), List<FixedSizeBinary(32)>.

boolean

Whether the field can be null.

string

base, arbitrum or op_stack.

boolean

false if this chain never fills the field: it’s always null here and listed in unavailable_fields.

The same information, with descriptions, is in the field reference: logs, transactions, blocks.

Overview

Querying

Sets and prepared queries

Chain and account

Fields

Example

Response

​Example

​Response

Example

Response