Pith Number

pith:4DL4YHM6

pith:2009:4DL4YHM6AQSNAXMTZX5573OEGQ

not attested not anchored not stored refs pending

GALEX Discovery of a Damped Ly-alpha System at Redshift z = 1

Anja Weyant, David Turnshek, Eric Monier, Sandhya Rao

arxiv:0906.2018 v1 · 2009-06-10 · 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{4DL4YHM6AQSNAXMTZX5573OEGQ}

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	2026-05-18T02:13:20.871898Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e0d7cc1d9e0424d05d93cdfbdfedc4340bd083dd9827ba9dd54a9788f96183cf

Aliases

arxiv: 0906.2018 · arxiv_version: 0906.2018v1 · doi: 10.48550/arxiv.0906.2018 · pith_short_12: 4DL4YHM6AQSN · pith_short_16: 4DL4YHM6AQSNAXMT · pith_short_8: 4DL4YHM6

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/4DL4YHM6AQSNAXMTZX5573OEGQ \
  | 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: e0d7cc1d9e0424d05d93cdfbdfedc4340bd083dd9827ba9dd54a9788f96183cf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "15287be64c298d4ab950f4719c5332da27abc4a5ada2770106a5983acd239f0d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-06-10T21:35:47Z",
    "title_canon_sha256": "15680ad487dd09c00a3c0d29d61526de6a83700edcd34202cd9085b1bb6d7536"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.2018",
    "kind": "arxiv",
    "version": 1
  }
}