Pith Number

pith:Y6UD6HJK

pith:2009:Y6UD6HJKUQJCDMTQ6KCLNHGSUY

not attested not anchored not stored refs pending

Low-Redshift Ly-alpha Selected Galaxies from GALEX Spectroscopy: A Comparison with Both UV-Continuum Selected Galaxies and High-Redshift Ly-alpha Emitters

A. J. Barger, E. M. Hu, L. L. Cowie

arxiv:0909.0031 v2 · 2009-08-31 · 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{Y6UD6HJKUQJCDMTQ6KCLNHGSUY}

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	2026-05-18T04:29:42.441971Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c7a83f1d2aa41221b270f284b69cd2a6014f56ce31b045da4ad97157a942aa72

Aliases

arxiv: 0909.0031 · arxiv_version: 0909.0031v2 · doi: 10.48550/arxiv.0909.0031 · pith_short_12: Y6UD6HJKUQJC · pith_short_16: Y6UD6HJKUQJCDMTQ · pith_short_8: Y6UD6HJK

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/Y6UD6HJKUQJCDMTQ6KCLNHGSUY \
  | 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: c7a83f1d2aa41221b270f284b69cd2a6014f56ce31b045da4ad97157a942aa72

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ac73aa7ba237d0a58d00812a7bb2cb0d0db60a1223fc5e88ebdd9fd094fd3fad",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-08-31T20:39:26Z",
    "title_canon_sha256": "5ad910765784a0ac3b1a50570c7a4a6fc21ec78e897355983bbd4ebc29f555c1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.0031",
    "kind": "arxiv",
    "version": 2
  }
}