Pith Number

pith:EGAKH2I7

pith:2022:EGAKH2I7URROV4XJA5VAVQAEKI

not attested not anchored not stored refs pending

Unusual Abundances from Planetary System Material Polluting the White Dwarf G238-44

Beth L. Klein, B. Zuckerman, Carl Melis, D. Koester, M. Jura, Ted M Johnson

arxiv:2211.02673 v1 · 2022-11-04 · 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{EGAKH2I7URROV4XJA5VAVQAEKI}

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	2026-07-05T05:26:56.111240Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2180a3e91fa462eaf2e9076a0ac004523256e75df78614eb1014a1d333008f1f

Aliases

arxiv: 2211.02673 · arxiv_version: 2211.02673v1 · doi: 10.48550/arxiv.2211.02673 · pith_short_12: EGAKH2I7URRO · pith_short_16: EGAKH2I7URROV4XJ · pith_short_8: EGAKH2I7

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/EGAKH2I7URROV4XJA5VAVQAEKI \
  | 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: 2180a3e91fa462eaf2e9076a0ac004523256e75df78614eb1014a1d333008f1f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d43d40fcb514f1d46d6b390748459be8f5839ad7177cbae155804bb0375a6e85",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2022-11-04T18:00:05Z",
    "title_canon_sha256": "b3ce9f565949739eb74849e1f4fc047e4073bc128c6b03c6e0aedd08eae0b3a1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2211.02673",
    "kind": "arxiv",
    "version": 1
  }
}