Heads

Monitor all blocks that are successfully validated and applied by the node and selected as the new head of the given chain.

GEThttps://xtz.nownodes.io/monitor/heads/{chain_id}

Path parameters

chain_id*string

A chain identifier. This is either a chain hash in Base58Check notation or a one the predefined aliases: 'main', 'test'.

Query parameters

Response

200default

Body

application/json

hash*A block identifier (Base58Check-encoded)

stringobject

level*integer

proto*integer

predecessor*A block identifier (Base58Check-encoded)

stringobject

timestamp*timestamp.protocol (one of)

A timestamp as seen by the protocol: second-level precision, epoch based.

stringobject

validation_pass*integer

operations_hash*A list of list of operations (Base58Check-encoded)

stringobject

fitness*Block fitness

The fitness, or score, of a block, that allow the Tezos to decide which chain is the best. A fitness value is a list of byte sequences. They are compared as follows: shortest lists are smaller; lists of the same length are compared according to the lexicographical order.

context*A hash of context (Base58Check-encoded)

stringobject

protocol_data*string

Pattern: ^([a-zA-Z0-9][a-zA-Z0-9])*$

Request

JavaScriptCurlPython

const response = await fetch('https://xtz.nownodes.io/monitor/heads/{chain_id}', {
    method: 'GET',
    headers: {},
});
const data = await response.json();

Response

200

{
  "hash": "text",
  "level": 0,
  "proto": 0,
  "predecessor": "text",
  "timestamp": "text",
  "validation_pass": 0,
  "operations_hash": "text",
  "fitness": [
    "text"
  ],
  "context": "text",
  "protocol_data": "text"
}