Pith Number

pith:FFCH4XOE

pith:2009:FFCH4XOEYF3CBQED4MCFXFJRQ6

not attested not anchored not stored refs pending

The Nature of Carbon Dioxide Bearing Ices in Quiescent Molecular Clouds

A. M. Cook, D. C. B. Whittet, J. E. Chiar, P. A. Gerakines, S. S. Shenoy, Y. J. Pendleton

arxiv:0901.0554 v1 · 2009-01-05 · astro-ph.SR · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FFCH4XOEYF3CBQED4MCFXFJRQ6}

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	2026-05-18T04:29:24.178220Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

29447e5dc4c17620c083e3045b953187afc808ae45cb3b7732356978266af53d

Aliases

arxiv: 0901.0554 · arxiv_version: 0901.0554v1 · doi: 10.48550/arxiv.0901.0554 · pith_short_12: FFCH4XOEYF3C · pith_short_16: FFCH4XOEYF3CBQED · pith_short_8: FFCH4XOE

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/FFCH4XOEYF3CBQED4MCFXFJRQ6 \
  | 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: 29447e5dc4c17620c083e3045b953187afc808ae45cb3b7732356978266af53d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bbcdc792a59e38402b5d171544616c43a5fa777d5e08f1d5bcd1cfbd9fead036",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-01-05T21:03:27Z",
    "title_canon_sha256": "5d35c09af87c234b46525ca7f02ed1c2ad0b45933eb59d73e70f9046b6a4a35a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.0554",
    "kind": "arxiv",
    "version": 1
  }
}