Pith Number

pith:J7JMKQ4G

pith:2009:J7JMKQ4GLK2TDTYGHP454ZSTEM

not attested not anchored not stored refs pending

X-Ray Absorption By WHIM in the Sculptor Wall

2), (2) INAF-Trieste, 3), (3) INAF-Milano, (4) INAF-Brera), David A. Buote (1), Fabio Gastaldello (1, Gianpiero Tagliaferri (4) ((1) UC Irvine, Luca Zappacosta (1, Philip J. Humphrey (1), Taotao Fang (1)

arxiv:0901.3802 v1 · 2009-01-24 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{J7JMKQ4GLK2TDTYGHP454ZSTEM}

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	2026-05-18T04:29:17.183044Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4fd2c543865ab531cf063bf9de66532314c140d99509aecae64a66e9c19f798c

Aliases

arxiv: 0901.3802 · arxiv_version: 0901.3802v1 · doi: 10.48550/arxiv.0901.3802 · pith_short_12: J7JMKQ4GLK2T · pith_short_16: J7JMKQ4GLK2TDTYG · pith_short_8: J7JMKQ4G

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/J7JMKQ4GLK2TDTYGHP454ZSTEM \
  | 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: 4fd2c543865ab531cf063bf9de66532314c140d99509aecae64a66e9c19f798c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "37b5e0ab12109db0627fa21af08595a3606848a438aaed9734281c2f73865593",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-01-24T00:12:51Z",
    "title_canon_sha256": "c939c822d140a9201df7cc3a0f8676a283f40a9221b9ebeae0cb34f1994cbef0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.3802",
    "kind": "arxiv",
    "version": 1
  }
}