Pith Number

pith:VNWZTQGZ

pith:2011:VNWZTQGZ4QFBISULXIJ2JBIPIX

not attested not anchored not stored refs pending

He II Ly{\beta} Gunn-Peterson Absorption: New HST Observations, and Theoretical Expectations

Avery Meiksin, Britton Smith, David Syphers, Donald G. York, Donald P. Schneider, Gerard A. Kriss, J. Michael Shull, Matthew Pieri, Scott F. Anderson, Wei Zheng

arxiv:1108.4727 v1 · 2011-08-24 · 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{VNWZTQGZ4QFBISULXIJ2JBIPIX}

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	2026-05-18T02:00:48.948756Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ab6d99c0d9e40a144a8bba13a4850f45d85259eaf5eac95fee2fe355571dfc1c

Aliases

arxiv: 1108.4727 · arxiv_version: 1108.4727v1 · doi: 10.48550/arxiv.1108.4727 · pith_short_12: VNWZTQGZ4QFB · pith_short_16: VNWZTQGZ4QFBISUL · pith_short_8: VNWZTQGZ

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/VNWZTQGZ4QFBISULXIJ2JBIPIX \
  | 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: ab6d99c0d9e40a144a8bba13a4850f45d85259eaf5eac95fee2fe355571dfc1c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bd2fd6fc9124af00745da2a9ae728653b6bfce910a9ee74e51c563e0dad176ef",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-08-24T00:36:26Z",
    "title_canon_sha256": "e99367a183e13c569614d9dcf2d758eb3666d0f2b8a4de6f6f175b18780a2dab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.4727",
    "kind": "arxiv",
    "version": 1
  }
}