RPCScan
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GenLayer Testnets

https://zksync-os-testnet-genlayer.zksync.dev

GenLayer Testnetsevmzksync.dev· zksync-os-testnet-genlayercompare ↔● PQ hybrid
Posture score
96
Speed score
84
TLS version
TLS 1.3
Cipher
TLS_AES_128_GCM_SHA256
KEX group
X25519MLKEM768
PQ class
PQ hybrid
ALPN
h2
Cert expires in
74d
Session resumed
no
TLS handshake
137ms
Resumption
140ms
TTFB
692ms
RPC block height
24,030,362
TLS handshake
VersionTLS 1.3
CipherTLS_AES_128_GCM_SHA256
KEX groupX25519MLKEM768
ALPNh2
PQ classPQ hybrid
Handshake137ms
Resumed?no
OCSP stapledno
SCTs presentno
Certificate chain
Subjectzksync-os-testnet-genlayer.zksync.dev
IssuerYR2
Key typeRSA-2048
Chain length3
SANszksync-os-testnet-genlayer.zksync.dev
Not before2026-09-24
Not after2026-12-23
Days to expiry74d
Chain SHA-256323e8f1bafeab941…
Misconfigurations
  • OCSP stapling not enabled no_ocsp_staple
Grades
Posture
A+96
Speed
B84
Certificate
100
TLS profile
95
Post-quantum
90
RPC reachability
100
Endpoint identity
URL
https://zksync-os-testnet-genlayer.zksync.dev
Host
Chain ID
4221
VM
evm
Platform type
chain
Live probe (last 24 h)
Probes attempted
-
Successful
-
Success rate
-
Median p50
-
Median p95
-
Latest bucket
-
TLS posture (post-quantum)full history →
Class
PQ hybrid
Key exchange
X25519MLKEM768
Cipher
TLS_AES_128_GCM_SHA256
Last seen
2026-10-09T16:08:35.013849514Z
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 'https://zksync-os-testnet-genlayer.zksync.dev' \
  -H 'content-type: application/json' \
  -d '{"jsonrpc":"2.0","method":"eth_chainId","params":[],"id":1}'
Scan reportschema rpcscan-report · captured 2026-10-10T05:48:03.762Z
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.