Pith Number

pith:VME255VU

pith:2004:VME255VU2FICAKE6WSMSWFMNYC

not attested not anchored not stored refs pending

Hubble Advanced Camera for Surveys Observations of the z=6.42 Quasar SDSS 1148+5251: A Leak in the Gunn-Peterson Trough

Michael A. Strauss, Richard L. White, Robert H. Becker, Xiaohui Fan

arxiv:astro-ph/0411195 v1 · 2004-11-08 · 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{VME255VU2FICAKE6WSMSWFMNYC}

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	2026-05-18T01:07:31.934801Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ab09aef6b4d15020289eb4992b158dc09e7958af35c1c80a3c9d0c669955ce8a

Aliases

arxiv: astro-ph/0411195 · arxiv_version: astro-ph/0411195v1 · doi: 10.48550/arxiv.astro-ph/0411195 · pith_short_12: VME255VU2FIC · pith_short_16: VME255VU2FICAKE6 · pith_short_8: VME255VU

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/VME255VU2FICAKE6WSMSWFMNYC \
  | 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: ab09aef6b4d15020289eb4992b158dc09e7958af35c1c80a3c9d0c669955ce8a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "169b715e7b0ceb7985341fffad9679967261b98b8e3f30b4342d909678f4cd73",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-11-08T16:31:33Z",
    "title_canon_sha256": "4723487cd3000904842c70b22ad032c2d520f85743f5ed9799d28ca97f6f0d61"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0411195",
    "kind": "arxiv",
    "version": 1
  }
}