Pith Number

pith:4VSOTY3X

pith:2018:4VSOTY3XNKDE2E6YWGS74XYCNA

not attested not anchored not stored refs pending

Strange messenger: A new history of hydrogen on Earth, as told by Xenon

David C. Catling, Kevin J. Zahnle, Marko Gacesa

arxiv:1809.06960 v1 · 2018-09-18 · 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{4VSOTY3XNKDE2E6YWGS74XYCNA}

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	2026-05-18T00:01:57.700122Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e564e9e3776a864d13d8b1a5fe5f02683543796676bd3488bba42ab225e79f1a

Aliases

arxiv: 1809.06960 · arxiv_version: 1809.06960v1 · doi: 10.48550/arxiv.1809.06960 · pith_short_12: 4VSOTY3XNKDE · pith_short_16: 4VSOTY3XNKDE2E6Y · pith_short_8: 4VSOTY3X

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/4VSOTY3XNKDE2E6YWGS74XYCNA \
  | 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: e564e9e3776a864d13d8b1a5fe5f02683543796676bd3488bba42ab225e79f1a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "73c6e79eedf6fe75ef9a1eee8565236f6936c9ee4a9510387232ba95f47fcaa9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2018-09-18T23:20:48Z",
    "title_canon_sha256": "d122da7b7a15e52720fa9885007fb6e75ab74271777e69e4a8baff22c5ed2876"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.06960",
    "kind": "arxiv",
    "version": 1
  }
}