Pith Number

pith:2G3LXOQ3

pith:2020:2G3LXOQ3SGIJG3BKOKCK3GHCGE

not attested not anchored not stored refs pending

Chandra Observations of NGC 7212: Large-scale Extended Hard X-ray Emission

A. Paggi, A. Siemiginowska, G. Fabbiano, J. Raymond, Mackenzie L. Jones (Center for Astrophysics | Harvard, Martin Elvis, M. Karovska, Smithsonian), W. P. Maksym

arxiv:2003.02271 v1 · 2020-03-04 · astro-ph.GA · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2G3LXOQ3SGIJG3BKOKCK3GHCGE}

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	2026-07-05T00:50:16.204144Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d1b6bbba1b9190936c2a7284ad98e2313ce1f9a2048222ee66030950f4e3cc0a

Aliases

arxiv: 2003.02271 · arxiv_version: 2003.02271v1 · doi: 10.48550/arxiv.2003.02271 · pith_short_12: 2G3LXOQ3SGIJ · pith_short_16: 2G3LXOQ3SGIJG3BK · pith_short_8: 2G3LXOQ3

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/2G3LXOQ3SGIJG3BKOKCK3GHCGE \
  | 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: d1b6bbba1b9190936c2a7284ad98e2313ce1f9a2048222ee66030950f4e3cc0a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a9ece5aa57a3d708e99237dd62c8a17865a37bd6111d57f41e2ee1b13741bf02",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2020-03-04T19:00:01Z",
    "title_canon_sha256": "4b4ef9347abd07143af48b8a979046352283b5469b1eb0f4e1a98e4580063b4c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2003.02271",
    "kind": "arxiv",
    "version": 1
  }
}