Pith Number

pith:4VCA55BD

pith:2012:4VCA55BD4SBOHDNPZFOBW5HZKB

not attested not anchored not stored refs pending

Ionized Gas in the First 10 Kiloparsecs of the Interstellar Galactic Halo: Metal Ion Fractions

J. Christopher Howk, S. Michelle Consiglio

arxiv:1209.4640 v1 · 2012-09-20 · 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{4VCA55BD4SBOHDNPZFOBW5HZKB}

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	2026-05-18T01:54:20.490469Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5440ef423e482e38dafc95c1b74f9507fb342fce225df35ca3ff17ed4f49793

Aliases

arxiv: 1209.4640 · arxiv_version: 1209.4640v1 · doi: 10.48550/arxiv.1209.4640 · pith_short_12: 4VCA55BD4SBO · pith_short_16: 4VCA55BD4SBOHDNP · pith_short_8: 4VCA55BD

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/4VCA55BD4SBOHDNPZFOBW5HZKB \
  | 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: e5440ef423e482e38dafc95c1b74f9507fb342fce225df35ca3ff17ed4f49793

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9d0ffa8ec36fb1a86845556b5c06dbc4b8ab4e6db1246e93eabf7444f6807d54",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-09-20T20:00:01Z",
    "title_canon_sha256": "cab34b87059c0616c8a29bbe456d6c4c1f9ea594f1ada5a70d8e938c1ca55503"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.4640",
    "kind": "arxiv",
    "version": 1
  }
}