BitcoinII public API, WebSocket, and Electrum smoke test — 2026-07-12

CategoryVerification recordStatusPartial / Directly tested

Date checked: 2026-07-12
Timezone: America/New_York

Summary

A narrow read-only smoke test checked the public BitcoinII explorer, REST API, WebSocket endpoint, and advertised Electrum services. The local BitcoinII Core node and REST tip matched at check time. No wallet access, transaction broadcast, POST submission, credentials, private keys, account-gated services, fuzzing, or load testing were used.

Services checked

Service	Endpoint	Result
Explorer	https://bc2mempool.com	HTTP 200; BitcoinII explorer shell loaded
Explorer alias	https://bc2.live	HTTP 200; same visible shell observed, shared backend not assumed
REST docs	https://bc2mempool.com/docs/api/rest	HTTP 200; static fetch returned SPA shell rather than readable docs body
REST base	https://bc2mempool.com/api/v1	404; concrete endpoints worked
WebSocket	wss://bc2mempool.com/api/v1/ws	Handshake succeeded; initial explorer-state event received after {"action":"init"}
Electrum TCP	infra1.bitcoin-ii.org:50008	Connected; read-only calls succeeded
Electrum SSL	infra1.bitcoin-ii.org:50009	Connected; valid TLS 1.3 certificate for hostname; read-only calls succeeded
Electrum TCP	explorer.bitcoin-ii.org:5008	DNS resolved; TCP timed out

REST endpoint results

Successful public responses exposed permissive CORS (Access-Control-Allow-Origin: *) on the checked endpoints.

Endpoint	Result	Classification
/api/v1/blocks/tip/height	Returned scalar tip height	mempool.space-compatible/similar
/api/v1/blocks/tip/hash	Returned tip hash	mempool.space-compatible/similar
/api/v1/blocks	Returned recent block array with additional extras fields	Similar, with extensions
/api/block/{hash}	Returned block details	Compatible/similar
/api/v1/block/{hash}	Returned same block shape as an alias	Similar alias
/api/block/{hash}/txids	Returned transaction ID array	Compatible
/api/block/{hash}/txs	Returned transaction objects	Compatible/similar
/api/block-height/{height}	Returned block hash	Compatible/similar
/api/tx/{txid}	Returned mempool-style transaction object	Compatible/similar
/api/address/{address}	Returned chain/mempool stats plus BC2 electrum field	Similar, BC2 extension
/api/address/{address}/txs	Returned address transaction array	Compatible/similar
/api/address/{address}/utxo	404	Unavailable in this check
/api/address/{address}/utxos	404	Unavailable in this check
/api/mempool	Returned count, vsize, total fee, and histogram	Compatible/similar
/api/mempool/recent	Returned recent mempool transaction summaries	Compatible/similar
/api/v1/fees/recommended	Returned standard recommended-fee fields	Compatible/similar
/api/v1/difficulty-adjustment	Returned retarget/progress fields	Analytics extension
/api/v1/mining/hashrate/3d	Returned hashrate and difficulty series/current values	Analytics extension
/api/v1/prices	Returned BC2 prices in multiple fiat currencies	BC2-specific extension
/bc2-price.json	Returned BC2 market fields including source and update time	BC2-specific extension
/richlist.json	Returned supply/address counts and a rich-list array	BC2-specific extension
/api/v1/services	Timed out	Unavailable in this check

The rich-list response reported total_addresses=233936, addresses_with_balance=5869, and total_supply=287152536663595. The full list was not copied into this record.

Same-time local-node comparison

Local node timestamp: 2026-07-12T18:04:07.9182933-04:00
REST timestamp: 2026-07-12T18:04:08.1566057-04:00

Source	Height	Best block hash
Local BitcoinII Core node	57437	00000000000000002b51511b79086a542c77992d82f34b7253b01de0e82b951a
bc2mempool.com REST API	57437	00000000000000002b51511b79086a542c77992d82f34b7253b01de0e82b951a

Result: the local node and REST API matched at check time. This is a dated point-in-time agreement, not proof of permanent sync or reliability.

WebSocket result

The WebSocket handshake to wss://bc2mempool.com/api/v1/ws succeeded. After sending the documented-style initialization message {"action":"init"}, a text event was received beginning with explorer-state fields including mempoolInfo and blocks. The connection was then closed cleanly.

The first frame was large, and full-message JSON validity and all event schemas were not established from this single smoke test.

Electrum results

Only these read-only methods were used:

• server.version
• server.features
• blockchain.headers.subscribe

Endpoint	Result
tcp://infra1.bitcoin-ii.org:50008	ElectrumX 1.18.0; protocol 1.4, maximum 1.4.3; genesis hash matched BitcoinII; header height 57437; header hash matched local/REST tip
ssl://infra1.bitcoin-ii.org:50009	Same server/protocol/genesis/header result; TLS 1.3 certificate validation and hostname match succeeded
tcp://explorer.bitcoin-ii.org:5008	Connection timed out; no protocol result

Observed genesis hash:

0000000028f062b221c1a8a5cf0244b1627315f7aa5b775b931cfec46dc17ceb

Compatibility interpretation

This smoke test supports describing many REST paths as mempool.space-like or compatible in the tested shape. It does not establish universal drop-in compatibility.

Potential compatibility breaks remain:

• address UTXO paths tested here returned 404,
• the /api/v1 base path returned 404,
• aliases are not guaranteed for every endpoint,
• fee units should be documented explicitly,
• BC2 network identifiers, genesis hash, address prefixes, and units differ from Bitcoin,
• transaction broadcast behavior was not tested,
• WebSocket schemas were only minimally checked,
• Electrum connectivity does not prove wallet compatibility.

Supported claims

This record supports that, at check time:

• bc2mempool.com and bc2.live were reachable,
• public GET endpoints worked for chain tip, blocks, transactions, address summaries, mempool, fees, mining analytics, price, and rich-list data,
• the REST tip matched a local BitcoinII Core node,
• the WebSocket handshake succeeded and returned initial explorer state,
• the infra1.bitcoin-ii.org Electrum TCP and SSL services accepted standard read-only calls,
• the SSL certificate validated for the advertised hostname.

Claims not established

This record does not establish:

• permanent reliability or permanent sync,
• full mempool.space drop-in compatibility,
• compatibility with BlueWallet, Cake Wallet, Komodo, or other wallets,
• transaction-broadcast correctness,
• UTXO endpoint compatibility,
• behavior under load or repeated reconnects,
• common backend ownership for bc2.live and bc2mempool.com,
• official governance or maintainer status.

Documentation cautions

• Describe successful endpoints as observed and dated.
• Do not paste full rich-list responses into normal documentation.
• Do not recommend public explorer APIs as the sole source of truth for custody or exchange workflows.
• Keep transaction broadcast, wallet compatibility, long-term service reliability, and complete API compatibility marked unverified.

Verification

Status: Partial / Directly tested
Primary evidence: Codex read-only public-service smoke-test report, local BitcoinII Core RPC comparison, public REST responses, WebSocket handshake, and Electrum read-only responses from 2026-07-12
Notes: This was a narrow availability and compatibility smoke test, not a security audit, load test, wallet test, or broadcast test.