Pith Number

pith:PCZLPRFS

pith:2011:PCZLPRFS767EHXBZWTALE7EAZD

not attested not anchored not stored refs pending

Ion chemistry in the early universe: revisiting the role of HeH+ with new quantum calculations

Daniele Galli, Francesco A. Gianturco, Mario Tacconi, Stefano Bovino

arxiv:1103.1995 v1 · 2011-03-10 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PCZLPRFS767EHXBZWTALE7EAZD}

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	2026-05-18T02:02:55.224051Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78b2b7c4b2ffbe43dc39b4c0b27c80c8c666fffed10622f64cd699dd6aadf690

Aliases

arxiv: 1103.1995 · arxiv_version: 1103.1995v1 · doi: 10.48550/arxiv.1103.1995 · pith_short_12: PCZLPRFS767E · pith_short_16: PCZLPRFS767EHXBZ · pith_short_8: PCZLPRFS

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/PCZLPRFS767EHXBZWTALE7EAZD \
  | 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: 78b2b7c4b2ffbe43dc39b4c0b27c80c8c666fffed10622f64cd699dd6aadf690

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "548909e9c98048dfdb1ba71a0129ae0ad61787a0fc0538336fbfacedb3bf99dc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-03-10T11:18:56Z",
    "title_canon_sha256": "9b85351ff575cdd10dc37d896fb7c3e41b9f8996becc31bb23c2ed2405885650"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.1995",
    "kind": "arxiv",
    "version": 1
  }
}