Pith Number

pith:PCDEWRUK

pith:2019:PCDEWRUKJLZYS3UPKCHWA3CO2T

not attested not anchored not stored refs pending

{\it HST}/COS Observations of the Warm Ionized Gaseous Halo of NGC 891

Edmund J. Hodges-Kluck, Joel N. Bregman, Zhijie Qu

arxiv:1904.04716 v1 · 2019-04-09 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PCDEWRUKJLZYS3UPKCHWA3CO2T}

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	2026-05-17T23:46:11.789630Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78864b468a4af3896e8f508f606c4ed4f93b9517733ac9b7b728475637ca0b5a

Aliases

arxiv: 1904.04716 · arxiv_version: 1904.04716v1 · doi: 10.48550/arxiv.1904.04716 · pith_short_12: PCDEWRUKJLZY · pith_short_16: PCDEWRUKJLZYS3UP · pith_short_8: PCDEWRUK

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/PCDEWRUKJLZYS3UPKCHWA3CO2T \
  | 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: 78864b468a4af3896e8f508f606c4ed4f93b9517733ac9b7b728475637ca0b5a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "98b2635ac198eb508847cf1870907f57f066d2e09fc43c040027756e4f261cd6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-04-09T14:51:44Z",
    "title_canon_sha256": "7f469e161805423d8d6486d15b4c3c222b3829596ddea7a0d1f0f129ccab7a09"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.04716",
    "kind": "arxiv",
    "version": 1
  }
}