RPCScan
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Companion site:ExplorerScan ↗Block explorer directory with per-provider drill-downs and TLS posture per host
PolySmartChain

https://seed0.polysmartchain.com

PolySmartChainevmpolysmartchain.com· seed0compare ↔
Posture score
83
Speed score
75
TLS version
TLS 1.3
Cipher
TLS_AES_128_GCM_SHA256
KEX group
classical
PQ class
Classical only
ALPN
h2
Cert expires in
143d
Session resumed
yes
TLS handshake
173ms
Resumption
181ms
TTFB
885ms
RPC block height
20,855,329
TLS handshake
VersionTLS 1.3
CipherTLS_AES_128_GCM_SHA256
KEX groupclassical
ALPNh2
PQ classClassical only
Handshake173ms
Resumed?yes · 181ms
OCSP stapledno
SCTs presentno
Certificate chain
Subject*.polysmartchain.com
IssuerNya Labs CA
Key typeRSA-2048
Chain length4
SANs*.polysmartchain.com, polysmartchain.com
Not before2026-02-01
Not after2027-03-03
Days to expiry143d
Chain SHA-256f8eaf753df11456b…
Misconfigurations
  • OCSP stapling not enabled no_ocsp_staple
Grades
Posture
B83
Speed
C75
Certificate
100
TLS profile
95
Post-quantum
40
RPC reachability
100
Endpoint identity
URL
https://seed0.polysmartchain.com
Host
Chain ID
6999
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
Classical only
Key exchange
-
Cipher
TLS_AES_128_GCM_SHA256
Last seen
2026-10-10T07:33:44.338177783Z
History (30 days)
no history
Chain peer ranking
This URL is fastest right now
no
Fastest p50 latency
-
Latest block height
-
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://seed0.polysmartchain.com' \
  -H 'content-type: application/json' \
  -d '{"jsonrpc":"2.0","method":"eth_chainId","params":[],"id":1}'
Scan reportschema rpcscan-report · captured 2026-10-10T07:34:36.032Z
SHA-256 of canonical content
computed in your browser
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.