Pith Number

pith:O2PBWON7

pith:2019:O2PBWON7LJPKACBJ4F2FPFI5T3

not attested not anchored not stored refs pending

Line Profiles of the Calcium I Resonance Line in Cool Metal-polluted White Dwarfs

F. X. Gad\'ea, N. F. Allard, P. Dufour, S. Blouin, T. Leininger

arxiv:1903.08503 v1 · 2019-03-20 · astro-ph.SR · 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{O2PBWON7LJPKACBJ4F2FPFI5T3}

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	2026-05-17T23:47:16.723180Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

769e1b39bf5a5ea00829e17457951d9ecb0ea892f93ed8d4b6c6e724fad743cd

Aliases

arxiv: 1903.08503 · arxiv_version: 1903.08503v1 · doi: 10.48550/arxiv.1903.08503 · pith_short_12: O2PBWON7LJPK · pith_short_16: O2PBWON7LJPKACBJ · pith_short_8: O2PBWON7

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/O2PBWON7LJPKACBJ4F2FPFI5T3 \
  | 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: 769e1b39bf5a5ea00829e17457951d9ecb0ea892f93ed8d4b6c6e724fad743cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "69982e2e23684ecce8fdbf110235a3e910421e981e51cffd6d0f2421a4c6940a",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-03-20T13:30:42Z",
    "title_canon_sha256": "6e27ca34247a55bce867a333c333ca3bc2a112b4f9a76bce824c6659d0601d06"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.08503",
    "kind": "arxiv",
    "version": 1
  }
}