wss://altair.api.onfinality.io/public-ws

Altairevm

onfinality.io· altair.api compare ↔

Posture score

Speed score

100

TLS version

TLS 1.3

Cipher

TLS_AES_128_GCM_SHA256

KEX group

classical

PQ class

Classical only

ALPN

Cert expires in

75d

Session resumed

TLS handshake

14ms

Resumption

22ms

TTFB

102ms

RPC block height

9,412,974

TLS handshake

VersionTLS 1.3

CipherTLS_AES_128_GCM_SHA256

KEX groupclassical

ALPNh2

PQ classClassical only

Handshake14ms

Resumed?no

OCSP stapledno

SCTs presentno

Certificate chain

Subjectaltair.api.onfinality.io

IssuerYR2

Key typeRSA-2048

Chain length3

SANsaltair.api.onfinality.io

Not before2026-09-24

Not after2026-12-23

Days to expiry75d

Chain SHA-256cc73de43a367fa19…

Misconfigurations

OCSP stapling not enabled no_ocsp_staple

Grades

Posture

B83

Speed

A+100

Certificate

100

TLS profile

Post-quantum

RPC reachability

100

Endpoint identity

URL

wss://altair.api.onfinality.io/public-ws

Host

altair.api.onfinality.io

Chain

Altair

Chain ID

2088

evm

Platform type

chain

Sibling RPCs

view all on chain page →

Live probe (last 24 h)

Probes attempted

Successful

Success rate

Median p50

Median p95

Latest bucket

TLS posture (post-quantum)full history →

Class

Classical only

Key exchange

Cipher

TLS_AES_128_GCM_SHA256

Last seen

2026-10-09T13:08:21.916002056Z

History (30 days)

no history

Chain peer ranking

This URL is fastest right now

Fastest p50 latency

Latest block height

Current fastest URL

Using this RPCtabs auto-fill the URL + chain ID

JSON-RPC eth_chainId, which verifies the endpoint is alive and reports the chain ID.

curl -X POST 'wss://altair.api.onfinality.io/public-ws' \
  -H 'content-type: application/json' \
  -d '{"jsonrpc":"2.0","method":"eth_chainId","params":[],"id":1}'

Scan reportschema rpcscan-report · captured 2026-10-10T05:49:55.022Z

SHA-256 of canonical content

computing…

The hash covers every field above the JSON serialization with sorted keys. Re-running this computation against the downloaded artifact must produce the same hash; that's how RPCScan's future on-chain proofs (rpcscanchain) will let anyone verify a published snapshot wasn't tampered with.