Pith Number

pith:UL4L6DKY

pith:2004:UL4L6DKYJGJEYY2YMKVRSY65DV

not attested not anchored not stored refs pending

Deep SAURON Spectral-Imaging of the diffuse Lyman-alpha halo LAB1 in SSA22

(2) CRAL-Observatoire, (3) Caltech, (4) Oxford, (5) Sterrewacht Leiden), E. Emsellem (2) ((1) Durham, M. Sullivan (1), P. T. de Zeeuw (5), R. Bacon (2), Richard Bower (1), R. J. Wilman (1), R. L. Davies (4), S. C. Chapman (3), S. L. Morris (1)

arxiv:astro-ph/0402456 v1 · 2004-02-19 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UL4L6DKYJGJEYY2YMKVRSY65DV}

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	2026-07-04T16:43:04.419177Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a2f8bf0d5849924c635862ab1963dd1d66287554beaed2b06c57a1f0bbf2aa10

Aliases

arxiv: astro-ph/0402456 · arxiv_version: astro-ph/0402456v1 · doi: 10.48550/arxiv.astro-ph/0402456 · pith_short_12: UL4L6DKYJGJE · pith_short_16: UL4L6DKYJGJEYY2Y · pith_short_8: UL4L6DKY

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/UL4L6DKYJGJEYY2YMKVRSY65DV \
  | 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: a2f8bf0d5849924c635862ab1963dd1d66287554beaed2b06c57a1f0bbf2aa10

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bdd99fb67f8f0aa96ba082c775475baf3261fc9d9dfe4cdde16cebc8bcd88d3d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-02-19T09:39:18Z",
    "title_canon_sha256": "b88000dff0929100bc780005b1791d771424a7a6d5dd161ec3e63ac5398b0bc5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0402456",
    "kind": "arxiv",
    "version": 1
  }
}