Pith Number

pith:5LJKAVPC

pith:1995:5LJKAVPCCNGIEYK5ZE7OLYYMVI

not attested not anchored not stored refs pending

THE GUNN-PETERSON EFFECT FROM UNDERDENSE REGIONS IN A PHOTOIONIZED INTERGALACTIC MEDIUM

Andreas Reisenegger, Jordi Miralda-Escude

arxiv:astro-ph/9502063 v1 · 1995-02-13 · 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{5LJKAVPCCNGIEYK5ZE7OLYYMVI}

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	2026-05-18T01:07:42.223975Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ead2a055e2134c82615dc93ee5e30caa3a38f2179ab097bf480ed68ae0a41f4e

Aliases

arxiv: astro-ph/9502063 · arxiv_version: astro-ph/9502063v1 · doi: 10.48550/arxiv.astro-ph/9502063 · pith_short_12: 5LJKAVPCCNGI · pith_short_16: 5LJKAVPCCNGIEYK5 · pith_short_8: 5LJKAVPC

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/5LJKAVPCCNGIEYK5ZE7OLYYMVI \
  | 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: ead2a055e2134c82615dc93ee5e30caa3a38f2179ab097bf480ed68ae0a41f4e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e9cd9391cede7d15aa56ad79f120ce94f4a0c13c2544938806b90810ffc086ce",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1995-02-13T15:27:35Z",
    "title_canon_sha256": "61d4d5a41e516ce698eec76867011a7112122d6b63ffe1de63d58da1b182b0e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9502063",
    "kind": "arxiv",
    "version": 1
  }
}