Pith Number

pith:TJG2UTVO

pith:2009:TJG2UTVOONM5JKTBYRH7GVDSEP

not attested not anchored not stored refs pending

Analytical Models of the Intergalactic Medium and Reionization

T. Roy Choudhury

arxiv:0904.4596 v1 · 2009-04-29 · 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{TJG2UTVOONM5JKTBYRH7GVDSEP}

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	2026-05-18T02:34:59.464229Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9a4daa4eae7359d4aa61c44ff3547223fb0a21b01611b898507edea0ad3dc9ae

Aliases

arxiv: 0904.4596 · arxiv_version: 0904.4596v1 · doi: 10.48550/arxiv.0904.4596 · pith_short_12: TJG2UTVOONM5 · pith_short_16: TJG2UTVOONM5JKTB · pith_short_8: TJG2UTVO

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/TJG2UTVOONM5JKTBYRH7GVDSEP \
  | 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: 9a4daa4eae7359d4aa61c44ff3547223fb0a21b01611b898507edea0ad3dc9ae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "129a0f30ddb614627b1fbc45c1fe9cfac4280709f962e3ee10e60706e591bb5b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-04-29T12:35:12Z",
    "title_canon_sha256": "dad19deb147bf6d6af8ab20277eee5764e74473a788cd4cd108d8dacf6ae6a8a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.4596",
    "kind": "arxiv",
    "version": 1
  }
}