Pith Number

pith:HSJ7IV3M

pith:2012:HSJ7IV3M74HJQLQH2MHJ3NLEUC

not attested not anchored not stored refs pending

A Deep X-ray View of the Hot Halo in the Edge-on Spiral Galaxy NGC 891

Edmund J. Hodges-Kluck, Joel N. Bregman

arxiv:1211.1669 v1 · 2012-11-07 · astro-ph.CO · 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{HSJ7IV3M74HJQLQH2MHJ3NLEUC}

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	2026-05-18T01:53:18.335205Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c93f4576cff0e982e07d30e9db564a0ab462ab55ed1c9fe710fe1d4606ee70d

Aliases

arxiv: 1211.1669 · arxiv_version: 1211.1669v1 · doi: 10.48550/arxiv.1211.1669 · pith_short_12: HSJ7IV3M74HJ · pith_short_16: HSJ7IV3M74HJQLQH · pith_short_8: HSJ7IV3M

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/HSJ7IV3M74HJQLQH2MHJ3NLEUC \
  | 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: 3c93f4576cff0e982e07d30e9db564a0ab462ab55ed1c9fe710fe1d4606ee70d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "79471baa7ce78b0d041b7e219658d70e95faef429c478f370204b3e3696cef21",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-11-07T21:00:01Z",
    "title_canon_sha256": "945ebd1750471b28d04e30b3880a0efdf2a0083747e75de3510555f4a7f1296f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.1669",
    "kind": "arxiv",
    "version": 1
  }
}