Pith Number

pith:QW5JWXDJ

pith:2026:QW5JWXDJHC4ZSEDC5XSN5JRWVJ

not attested not anchored not stored refs pending

An X-ray Absorption-Line Survey of the Circumgalactic Medium of M31 with XMM-Newton

Fabrizio Nicastro, Kaile Wang, Taotao Fang, Zheng Zhou

arxiv:2608.10088 v1 · 2026-08-10 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QW5JWXDJHC4ZSEDC5XSN5JRWVJ}

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	2026-08-12T00:22:47.178243Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

85ba9b5c6938b9991062ede4dea636aa4c6083db3617859a27ae7f7e7a67a524

Aliases

arxiv: 2608.10088 · arxiv_version: 2608.10088v1 · doi: 10.48550/arxiv.2608.10088 · pith_short_12: QW5JWXDJHC4Z · pith_short_16: QW5JWXDJHC4ZSEDC · pith_short_8: QW5JWXDJ

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/QW5JWXDJHC4ZSEDC5XSN5JRWVJ \
  | 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: 85ba9b5c6938b9991062ede4dea636aa4c6083db3617859a27ae7f7e7a67a524

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5514250dd0a7a152a883237f0bcd5ba2d628040ad362352470472d41634cb0d4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-08-10T18:01:57Z",
    "title_canon_sha256": "b978b1d201ad44eb0e8cdaf15af974bcc0a9ecd50cb562a2fd1e542448266d4b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2608.10088",
    "kind": "arxiv",
    "version": 1
  }
}