Pith Number

pith:ZD7WFTQV

pith:2009:ZD7WFTQVPI6XAIAHKILGJMTQS5

not attested not anchored not stored refs pending

A MIKE + UVES survey of Sub-Damped Lyman-Alpha Systems at z<1.5

Celine Peroux, Donald G. York, James T. Lauroesch, Joseph D. Meiring, Pushpa Khare, Varsha P. Kulkarni

arxiv:0905.4473 v2 · 2009-05-27 · 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{ZD7WFTQVPI6XAIAHKILGJMTQS5}

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	2026-05-18T02:13:31.539529Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c8ff62ce157a3d702007521664b270976c5ff400021afef6101b6720f7d6c32a

Aliases

arxiv: 0905.4473 · arxiv_version: 0905.4473v2 · doi: 10.48550/arxiv.0905.4473 · pith_short_12: ZD7WFTQVPI6X · pith_short_16: ZD7WFTQVPI6XAIAH · pith_short_8: ZD7WFTQV

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/ZD7WFTQVPI6XAIAHKILGJMTQS5 \
  | 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: c8ff62ce157a3d702007521664b270976c5ff400021afef6101b6720f7d6c32a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2f2657b7db645d02d637304c2eadefe0763c514cf48ce07976171ae0e9e1efb1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-05-27T16:56:02Z",
    "title_canon_sha256": "37bd210215465dcf62ae4863bb49086a8e5c2d098696fb21e965e68d12050fa6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.4473",
    "kind": "arxiv",
    "version": 2
  }
}