Pith Number

pith:HEXHDDC6

pith:2007:HEXHDDC656FQ2YCRVQBS3PXCAC

not attested not anchored not stored refs pending

Molecular Hydrogen Formation on Amorphous Silicates Under Interstellar Conditions

Adina Lederhendler, Emanuele Congiu, Gianfranco Vidali, Giulio Manico, Hagai B. Perets, Joe Roser, John Robert Brucato, Ling Li, Ofer Biham, Sol Swords, Valerio Pirronello

arxiv:astro-ph/0703248 v2 · 2007-03-11 · astro-ph · physics.chem-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HEXHDDC656FQ2YCRVQBS3PXCAC}

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	2026-05-18T04:36:20.269489Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

392e718c5eef8b0d6051ac032dbee200bb439fff6e5f9de76c701957d335a255

Aliases

arxiv: astro-ph/0703248 · arxiv_version: astro-ph/0703248v2 · doi: 10.48550/arxiv.astro-ph/0703248 · pith_short_12: HEXHDDC656FQ · pith_short_16: HEXHDDC656FQ2YCR · pith_short_8: HEXHDDC6

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/HEXHDDC656FQ2YCRVQBS3PXCAC \
  | 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: 392e718c5eef8b0d6051ac032dbee200bb439fff6e5f9de76c701957d335a255

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bc2c5d5d72c4c284286c953c3d1520770b738105e2788af455f4880a7d6a5608",
    "cross_cats_sorted": [
      "physics.chem-ph"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-03-11T14:04:50Z",
    "title_canon_sha256": "168067aaf85f113f40028df163318dd8926046981d5aa1b88ec2f0fbafede688"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0703248",
    "kind": "arxiv",
    "version": 2
  }
}