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WebSocket API

CategoryDeveloper platformStatusDraft / Observed partialLast reviewed2026-09-12

MoreBC2 has current WebSocket reachability evidence for all three tested Mempool-style BitcoinII services.

Primary evidence: Public infrastructure smoke test — 2026-09-11.

Endpoint Status at 2026-09-11 check
wss://bc2mempool.com/api/v1/ws Connected; init returned explorer-state data.
wss://explorer.bitcoin-ii.org/api/v1/ws Connected; init returned explorer-state data.
wss://bc2.live/api/v1/ws Connected; init returned explorer-state data.

The initialization message used was:

{"action":"init"}

The returned state included mempool/explorer information. The test was intentionally bounded and did not attempt to catalog every event type or subscription mode.

The September check supports saying that:

  • all three WebSocket URLs accepted connections during the test window;
  • the same minimal init action produced an explorer-state response on each service;
  • the route family is actively implemented on all three tested hosts.

The current evidence does not establish:

  • complete event schemas,
  • long-running connection stability,
  • reconnect/backoff behavior,
  • all supported subscription actions,
  • ordering or delivery guarantees,
  • behavior under load,
  • schema parity with upstream mempool.space,
  • wallet/application compatibility,
  • backend/operator independence among the three hosts.

The three WebSocket services showed closely aligned behavior, just as their REST surfaces did.

That similarity does not prove a shared backend, but it also does not establish three independent providers. Do not treat the three hostnames as independent production redundancy without separate infrastructure evidence.

Use:

  • “WebSocket connection observed”
  • “init explorer-state response observed”
  • “schema coverage incomplete”
  • “dated service observation”

Do not use:

  • “production-ready WebSocket API”
  • “complete mempool.space WebSocket compatibility”
  • “independent redundant WebSocket providers”
  • “all event types documented”

Status: Draft / Observed partial
Primary source checked: Public infrastructure smoke test — 2026-09-11
Notes: September testing expands the older single-host July evidence to all three current Mempool-style services. Full schema, subscription, reconnect, load, and independence behavior remain unverified.