Pith Number

pith:FWH4FNK4

pith:2009:FWH4FNK4ALX7F4MAFSW6DQGI5Z

not attested not anchored not stored refs pending

Tracing molecular gas mass in extreme extragalactic environments: an observational study

Emmanuel M. Xilouris, Ming Zhu, Nario Kuno, Padeli P. Papadopoulos, Ute Lisenfeld

arxiv:0908.1600 v2 · 2009-08-12 · astro-ph.CO · 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{FWH4FNK4ALX7F4MAFSW6DQGI5Z}

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	2026-05-18T02:12:35.342759Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d8fc2b55c02eff2f1802cade1c0c8ee563afcd72f0dc8ce6bc293b6ef51a28b

Aliases

arxiv: 0908.1600 · arxiv_version: 0908.1600v2 · doi: 10.48550/arxiv.0908.1600 · pith_short_12: FWH4FNK4ALX7 · pith_short_16: FWH4FNK4ALX7F4MA · pith_short_8: FWH4FNK4

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/FWH4FNK4ALX7F4MAFSW6DQGI5Z \
  | 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: 2d8fc2b55c02eff2f1802cade1c0c8ee563afcd72f0dc8ce6bc293b6ef51a28b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "02f0b54260e81d86d01628d0c6c5f4a3251c02d289adc9e3619b64c110f531a0",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-08-12T00:13:31Z",
    "title_canon_sha256": "0afac01e04ae5e55ad18310691bc5ea932ef9fff4d6cd9f6e1b9eb785122a19c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.1600",
    "kind": "arxiv",
    "version": 2
  }
}