Pith Number

pith:E3UHGJGI

pith:2017:E3UHGJGI4QUTQ6GTH2A4SNKGQF

not attested not anchored not stored refs pending

The Luminous X-Ray Halos of Two Compact Elliptical Galaxies

Aaron J. Barth (UC Irvine), David A. Buote

arxiv:1712.03978 v2 · 2017-12-11 · 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{E3UHGJGI4QUTQ6GTH2A4SNKGQF}

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	2026-05-18T00:22:23.623535Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

26e87324c8e4293878d33e81c93546814c4803851cb9e0255fad1289c38f926b

Aliases

arxiv: 1712.03978 · arxiv_version: 1712.03978v2 · doi: 10.48550/arxiv.1712.03978 · pith_short_12: E3UHGJGI4QUT · pith_short_16: E3UHGJGI4QUTQ6GT · pith_short_8: E3UHGJGI

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/E3UHGJGI4QUTQ6GTH2A4SNKGQF \
  | 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: 26e87324c8e4293878d33e81c93546814c4803851cb9e0255fad1289c38f926b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6c9395748bf9d4efc1b9a83af99132543d2cbefe4b0b64ee8702d043dfeccc20",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-12-11T19:00:13Z",
    "title_canon_sha256": "eed60b5a214b67abfb3d2daac126bd6be8b746098807d86737bbf6ba37688f2f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.03978",
    "kind": "arxiv",
    "version": 2
  }
}