Pith Number

pith:X7HUWLED

pith:2009:X7HUWLEDAEDH5PUM5NZS7ZU6AH

not attested not anchored not stored refs pending

Mg II Absorption Characteristics of a Volume-Limited Sample of Galaxies at z ~ 0.1

2) ((1) Center for Cosmology, (2) Caltech), Elizabeth J. Barton (1), Irvine, Jeff Cooke (1, University of California

arxiv:0910.2458 v1 · 2009-10-13 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{X7HUWLEDAEDH5PUM5NZS7ZU6AH}

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	2026-05-18T02:11:24.018691Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bfcf4b2c8301067ebe8ceb732fe69e01f2d214be7803e3b34f9cd074f030d4ed

Aliases

arxiv: 0910.2458 · arxiv_version: 0910.2458v1 · doi: 10.48550/arxiv.0910.2458 · pith_short_12: X7HUWLEDAEDH · pith_short_16: X7HUWLEDAEDH5PUM · pith_short_8: X7HUWLED

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/X7HUWLEDAEDH5PUM5NZS7ZU6AH \
  | 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: bfcf4b2c8301067ebe8ceb732fe69e01f2d214be7803e3b34f9cd074f030d4ed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "968de7b2f0785b6a11cb06a1dcb82cf8296ae8bb9b2e165a77a16b3b5d4ef20e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-10-13T20:52:45Z",
    "title_canon_sha256": "9b07dd41da2f2808cfd6dc65cc8c95cb3d5c2f203afe2c2a19ae34689a149e39"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.2458",
    "kind": "arxiv",
    "version": 1
  }
}