Pith Number

pith:SIENQPM5

pith:2009:SIENQPM55K52RA27XFTUIXQN2B

not attested not anchored not stored refs pending

The Warm Molecular Gas Around the Cloverleaf Quasar

B.J. Naylor, C.M. Bradford, H. Inami, H. Matsuhara, H.T. Nguyen, J.E. Aguirre, J. Glenn, J.J. Bock, J. Zmuidzinas, L. Earle, P.R. Maloney, R. Aikin

arxiv:0908.1818 v3 · 2009-08-13 · astro-ph.CO · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SIENQPM55K52RA27XFTUIXQN2B}

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	2026-05-18T02:12:34.757159Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9208d83d9deabba8835fb967445e0dd05aa61bf2c0c708edbe3cc548583e58e3

Aliases

arxiv: 0908.1818 · arxiv_version: 0908.1818v3 · doi: 10.48550/arxiv.0908.1818 · pith_short_12: SIENQPM55K52 · pith_short_16: SIENQPM55K52RA27 · pith_short_8: SIENQPM5

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/SIENQPM55K52RA27XFTUIXQN2B \
  | 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: 9208d83d9deabba8835fb967445e0dd05aa61bf2c0c708edbe3cc548583e58e3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f9f2b6c854d2084ddd50fd668badb5fe7a758713bc7e96bb894d145e597bc1b1",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-08-13T05:05:20Z",
    "title_canon_sha256": "8328b1fc0eaada0453698711fff63a47f8037d3edb20f78bb609cdcb45ac16a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.1818",
    "kind": "arxiv",
    "version": 3
  }
}