Pith Number

pith:QBCLHDQ7

pith:2019:QBCLHDQ7JDZUBD7RPSUCQU34U7

not attested not anchored not stored refs pending

A gas-phase primordial origin of O2 in comet 67P/Churyumov-Gerasimenko

David A. Williams, Jonathan M.C. Rawlings, Thomas G. Wilson

arxiv:1902.09437 v1 · 2019-02-25 · astro-ph.EP · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QBCLHDQ7JDZUBD7RPSUCQU34U7}

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	2026-05-17T23:49:01.808016Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8044b38e1f48f3408ff17ca828537ca7d58f53aca874192273564db5fdee020b

Aliases

arxiv: 1902.09437 · arxiv_version: 1902.09437v1 · doi: 10.48550/arxiv.1902.09437 · pith_short_12: QBCLHDQ7JDZU · pith_short_16: QBCLHDQ7JDZUBD7R · pith_short_8: QBCLHDQ7

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/QBCLHDQ7JDZUBD7RPSUCQU34U7 \
  | 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: 8044b38e1f48f3408ff17ca828537ca7d58f53aca874192273564db5fdee020b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a462cf85882964d450f0482e9e5e57599c5c12f52ee668019c73d2db56ce7caa",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2019-02-25T17:00:27Z",
    "title_canon_sha256": "b7693006cb7f70006ecb7bf9e92ad291ed95244471573899197676b12e8fbb0f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.09437",
    "kind": "arxiv",
    "version": 1
  }
}