Read important blockchain data from the explorer.

EXPLORER_API="https://qntmscan.io/api/v2"

curl --fail-with-body --max-time 20 "$EXPLORER_API/stats" | jq '{
  total_blocks,
  total_transactions,
  total_addresses,
  average_block_time,
  network_utilization_percentage,
  gas_prices
}'

EXPLORER_API="https://qntmscan.io/api/v2"
LATEST_BLOCK="$(curl --fail-with-body --max-time 20 "$EXPLORER_API/blocks" |
  jq -r '.items[0].height')"

curl --fail-with-body --max-time 20 \
  "$EXPLORER_API/blocks/$LATEST_BLOCK" | jq '{
    height, hash, timestamp, transactions_count,
    gas_used, gas_limit, miner: .miner.hash
  }'

EXPLORER_API="https://qntmscan.io/api/v2"
TX_HASH="$(curl --fail-with-body --max-time 20 "$EXPLORER_API/transactions" |
  jq -r '.items[0].hash')"

curl --fail-with-body --max-time 20 \
  "$EXPLORER_API/transactions/$TX_HASH" | jq '{
    hash,
    status,
    result,
    block_number,
    timestamp,
    from: .from.hash,
    to: (.to.hash // null),
    value,
    fee: .fee.value,
    gas_used,
    nonce,
    raw_input
  }'

EXPLORER_API="https://qntmscan.io/api/v2"
ADDRESS="$(curl --fail-with-body --max-time 20 "$EXPLORER_API/transactions" |
  jq -r '.items[0].from.hash')"

curl --fail-with-body --max-time 20 \
  "$EXPLORER_API/addresses/$ADDRESS" | jq '{
    hash,
    coin_balance,
    is_contract,
    is_verified,
    has_tokens,
    has_token_transfers
  }'

curl --fail-with-body --max-time 20 \
  "$EXPLORER_API/addresses/$ADDRESS/transactions" |
  jq '.items[] | {hash, status, block_number, timestamp, value}'

from datetime import datetime
from decimal import Decimal


def atomic_to_quantum(value: str) -> Decimal:
    return Decimal(value) / Decimal(10**18)


def parse_explorer_time(value: str) -> datetime:
    return datetime.fromisoformat(value.replace("Z", "+00:00"))

EXPLORER_API="https://qntmscan.io/api/v2"
FIRST_PAGE="$(curl --fail-with-body --max-time 20 "$EXPLORER_API/blocks")"

echo "$FIRST_PAGE" | jq '.items[] | {height, hash, timestamp}'

NEXT_QUERY="$(echo "$FIRST_PAGE" | jq -r '
  .next_page_params
  | to_entries
  | map("\(.key)=\(.value | tostring | @uri)")
  | join("&")
')"

if [ -n "$NEXT_QUERY" ]; then
  curl --fail-with-body --max-time 20 \
    "$EXPLORER_API/blocks?$NEXT_QUERY" |
    jq '.items[] | {height, hash, timestamp}'
fi

import json
from urllib.parse import urlencode
from urllib.request import Request, urlopen

BASE_URL = "https://qntmscan.io/api/v2"


def get_json(path, params=None):
    query = urlencode(params or {})
    url = f"{BASE_URL}{path}" + (f"?{query}" if query else "")
    request = Request(url, headers={"accept": "application/json"})
    with urlopen(request, timeout=20) as response:
        if response.status != 200:
            raise RuntimeError(f"explorer returned HTTP {response.status}")
        return json.loads(response.read())


def iter_items(path, max_pages=10):
    cursor = None
    for _ in range(max_pages):
        page = get_json(path, cursor)
        yield from page["items"]
        cursor = page.get("next_page_params")
        if not cursor:
            return


stats = get_json("/stats")
print("indexed blocks", stats["total_blocks"])
print("indexed transactions", stats["total_transactions"])

for block in iter_items("/blocks", max_pages=2):
    print(block["height"], block["hash"], block["timestamp"])