Pith Number

pith:C545U4CU

pith:2012:C545U4CUAX6MPNF7YMOPJKFEYQ

not attested not anchored not stored refs pending

The chemistry of ions in the Orion Bar I. - CH+, SH+, and CF+: The effect of high electron density and vibrationally excited H2 in a warm PDR surface

C. Joblin, E. A. Bergin, F.F.S. van der Tak, F. Le Petit, J. H. Black, J. Le Bourlot, J. R. Goicoechea, M. Gerin, M. Roellig, V. Ossenkopf, Z. Nagy

arxiv:1212.4378 v2 · 2012-12-18 · 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{C545U4CUAX6MPNF7YMOPJKFEYQ}

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	2026-05-18T03:34:37.716349Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1779da705405fcc7b4bfc31cf4a8a4c412163019ad2945baa097de337b60965e

Aliases

arxiv: 1212.4378 · arxiv_version: 1212.4378v2 · doi: 10.48550/arxiv.1212.4378 · pith_short_12: C545U4CUAX6M · pith_short_16: C545U4CUAX6MPNF7 · pith_short_8: C545U4CU

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/C545U4CUAX6MPNF7YMOPJKFEYQ \
  | 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: 1779da705405fcc7b4bfc31cf4a8a4c412163019ad2945baa097de337b60965e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a19ac263d322fdfe9fb39c30f98ab3c81ac824e25a31ce72714c5bbf32624a19",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-12-18T15:20:39Z",
    "title_canon_sha256": "cd0069af82e70f8006762a2e526cbc85589f91e945dbb855265f8d12410dc95e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.4378",
    "kind": "arxiv",
    "version": 2
  }
}