Pith Number

pith:SN4WRM54

pith:2013:SN4WRM54OKJ225WGSFEKWDITLS

not attested not anchored not stored refs pending

An investigation of the line of sight towards QSO PKS 0237-233

A. Ajabshirizadeh, C. Ledoux, H. Fathivavsari, H. Rahmani, P. Noterdaeme, P. Petitjean, R. Srianand

arxiv:1308.0600 v1 · 2013-08-02 · 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{SN4WRM54OKJ225WGSFEKWDITLS}

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	2026-05-18T01:48:24.441003Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

937968b3bc7293ad76c69148ab0d135cb0ec42fa9403a727702b5a6ad51d291e

Aliases

arxiv: 1308.0600 · arxiv_version: 1308.0600v1 · doi: 10.48550/arxiv.1308.0600 · pith_short_12: SN4WRM54OKJ2 · pith_short_16: SN4WRM54OKJ225WG · pith_short_8: SN4WRM54

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/SN4WRM54OKJ225WGSFEKWDITLS \
  | 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: 937968b3bc7293ad76c69148ab0d135cb0ec42fa9403a727702b5a6ad51d291e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "72ebaecd7a027eb1f511fbcdd5feb1522b1d215422dc95ec3bbd04e6bed5e881",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-08-02T20:00:04Z",
    "title_canon_sha256": "857c51ed1d7b9b0815dc5a413fdc416b20682801f3ed206ae37a9692610087ea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.0600",
    "kind": "arxiv",
    "version": 1
  }
}