BTC Whale Address Watch

Keyless BTC whale-address monitor (public mempool.space + blockstream.info, no API key): watchlist of any BTC addresses - balance (chain+mempool), recent confirmed/mempool transfers, new-transaction and balance-change detection (stateful KVS), large-transfer alerts. Read-only public data.

What you get

Every run writes a dataset with one row per record:

{
  "kind": "whale-watch",
  "ts": "2026-09-22T00:26:27Z",
  "firstRun": true,
  "prevRunTs": null,
  "addresses": [
    {
      "address": "162Lmxk9jBoMQjU37PaNGpZiivaP2UNeou",
      "balanceBtc": 0.43772793,
      "mempoolBalanceBtc": 0.0,
      "txCount": 4,
      "recentTxs": [
        {
          "txid": "2faf64d744a2a3718ca9f47b13c42bb051822ae6db2fd070ba2ee676c47e4109",
          "confirmed": true,
          "timeIso": "2026-09-02T10:51:07Z",
          "inBtc": 0.24774793,
          "outBtc": 0.0
        },
        {
          "txid": "b906720a29ac8db2158d66bc6e44af366ee021440d276645bf5cdaaf3b5b87a4",
          "confirmed": true,
          "timeIso": "2026-09-02T10:18:25Z",
          "inBtc": 0.18998,
          "outBtc": 0.0
        },
        {
          "txid": "d6357bd9abd7886fd1f2fc6f2bbc2cb5692b520f9c1b06e1ce5254076d459cb1",
          "confirmed": true,
          "timeIso": "2026-06-30T17:38:25Z",
          "inBtc": 0.0,
          "outBtc": 0.009985
        },
        {
          "txid": "7954effd4e8d52c1e02788fa8f935b3dae5619a6ffb506a8a45054a8070340d6",
          "confirmed": true,
          "timeIso": "2026-06-30T13:28:22Z",
          "inBtc": 0.009985,
          "outB

Input

{
  "addresses": "162Lmxk9jBoMQjU37PaNGpZiivaP2UNeou",
  "limit": 10
}

Field	Type	Description
addresses	string	Addresses: the addresses parameter. Default: "162Lmxk9jBoMQjU37PaNGpZiivaP2UNeou".
limit	integer	Limit: the limit parameter. Default: 10.

Use cases

• Monitor on a schedule — run this Actor on a timer and get a fresh, normalized snapshot every time; diff the datasets to see what changed.
• Feed a dashboard or model — clean, one-JSON-item-per-record output is ready to pipe into a spreadsheet, database, or LLM prompt without any post-processing.
• Research & due diligence — pull a structured set of records for a topic, name, or window without scraping the public source by hand.

Limits & notes

• No API key, no login: it only reads public endpoints/feeds. If the upstream source is degraded, the run still succeeds and returns an honest status item instead of failing.
• Results reflect what the public source returned at run time (top-N windows, newest-first where applicable).
• Pay-per-event via synthetic events: each default-dataset item is billed through apify-default-dataset-item ($0.001 per item), plus apify-actor-start.
• Free to try on the free plan; PPE pricing applies to paid-plan users.

Categories

OTHER