Pith Number

pith:JWD4ZPCM

pith:2025:JWD4ZPCMCHWG2F6D5A6QX4LTOW

not attested not anchored not stored refs pending

On the Security of SSH Client Signatures

Fabian B\"aumer, J\"org Schwenk, Juraj Somorovsky, Marcus Brinkmann, Maximilian Radoy

arxiv:2509.09331 v1 · 2025-09-11 · cs.CR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JWD4ZPCMCHWG2F6D5A6QX4LTOW}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-05T12:09:34.230816Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4d87ccbc4c11ec6d17c3e83d0bf1737583989526ea931cdecac3e4537e33e7c0

Aliases

arxiv: 2509.09331 · arxiv_version: 2509.09331v1 · doi: 10.48550/arxiv.2509.09331 · pith_short_12: JWD4ZPCMCHWG · pith_short_16: JWD4ZPCMCHWG2F6D · pith_short_8: JWD4ZPCM

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/JWD4ZPCMCHWG2F6D5A6QX4LTOW \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 4d87ccbc4c11ec6d17c3e83d0bf1737583989526ea931cdecac3e4537e33e7c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "52d6c324b3e4edd88406dcd100b182617ab6c5d15574b7df422e7f2713d82ef8",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2025-09-11T10:32:13Z",
    "title_canon_sha256": "038603e13517e6ccc88be4d65aaa3e6e9cd12cc97198f6a26c183fb790ea4ff9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.09331",
    "kind": "arxiv",
    "version": 1
  }
}