Pith Number

pith:5ZXFIDQ6

pith:2011:5ZXFIDQ6GGBLPSHZX7H7DFETX6

not attested not anchored not stored refs pending

The nature of the Na I D-lines in the Red Rectangle

Adolf N. Witt, Donald G. York, Jason P. Aufdenberg, Jon E. Bjorkman, Joshua D. Thomas, Julie A. Dahlstrom, Lew M. Hobbs, Steven R. Federman, Uma P. Vijh

arxiv:1107.4961 v1 · 2011-07-25 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5ZXFIDQ6GGBLPSHZX7H7DFETX6}

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	2026-05-18T02:01:10.496589Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ee6e540e1e3182b7c8f9bfcff19493bf91327953d8a5ab7fc59b6408c7889c40

Aliases

arxiv: 1107.4961 · arxiv_version: 1107.4961v1 · doi: 10.48550/arxiv.1107.4961 · pith_short_12: 5ZXFIDQ6GGBL · pith_short_16: 5ZXFIDQ6GGBLPSHZ · pith_short_8: 5ZXFIDQ6

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/5ZXFIDQ6GGBLPSHZX7H7DFETX6 \
  | 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: ee6e540e1e3182b7c8f9bfcff19493bf91327953d8a5ab7fc59b6408c7889c40

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b351403786bef052a555662a9cba2a408a24f777800a4b513bd74f4dcc7d817b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-07-25T14:34:55Z",
    "title_canon_sha256": "0c95394facdf1274bc18976bddbf04c3e1d583987fa1426f3dd2485e15f616ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.4961",
    "kind": "arxiv",
    "version": 1
  }
}