Pith Number

pith:NMLJ54DD

pith:2010:NMLJ54DDTRNDBSV4YTEMJDMSBZ

not attested not anchored not stored refs pending

Galaxy Group at z=0.3 Associated with the Damped Lyman Alpha System Towards Quasar Q1127-145

(2) NMSU), C. W. Churchill (2) ((1) Swinburne University of Technology, G. G. Kacprzak (1), M. T. Murphy (1)

arxiv:1003.3669 v2 · 2010-03-18 · astro-ph.CO · 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{NMLJ54DDTRNDBSV4YTEMJDMSBZ}

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	2026-05-18T02:08:25.792064Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b169ef0639c5a30cabcc4c8c48d920e40dd623a22bd170763084b4b43198c51

Aliases

arxiv: 1003.3669 · arxiv_version: 1003.3669v2 · doi: 10.48550/arxiv.1003.3669 · pith_short_12: NMLJ54DDTRND · pith_short_16: NMLJ54DDTRNDBSV4 · pith_short_8: NMLJ54DD

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/NMLJ54DDTRNDBSV4YTEMJDMSBZ \
  | 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: 6b169ef0639c5a30cabcc4c8c48d920e40dd623a22bd170763084b4b43198c51

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3167f74f56efba6924ec96b54ba44ec33d809ccb4ce2957880b67bfec2b8a4db",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-03-18T20:02:03Z",
    "title_canon_sha256": "ad0cfbb10bbb59f06b1a32e715f85a2782267b59b200e032c37555850531a0cd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1003.3669",
    "kind": "arxiv",
    "version": 2
  }
}