Pith Number

pith:ETM4XZ6K

pith:2007:ETM4XZ6KLSH4GA2ERM753DXPFJ

not attested not anchored not stored refs pending

The observed ionization rate of the intergalactic medium and the ionizing emissivity at z >5: Evidence for a photon starved and extended epoch of reionization

James S. Bolton (MPA), Martin G. Haehnelt (IoA)

arxiv:astro-ph/0703306 v2 · 2007-03-13 · 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{ETM4XZ6KLSH4GA2ERM753DXPFJ}

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.

Cited by

2 papers in Pith

A self-consistent analytical model for both the photoionization rate and reionization history

Machine Learning Techniques for Astrophysics and Cosmology: Lyman-$\alpha$ forest

Receipt and verification

First computed	2026-07-04T17:07:46.516305Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

24d9cbe7ca5c8fc303448b3fdd8eef2a6d5b8db6d5c352ebd635f2b6edbf9a2a

Aliases

arxiv: astro-ph/0703306 · arxiv_version: astro-ph/0703306v2 · doi: 10.48550/arxiv.astro-ph/0703306 · pith_short_12: ETM4XZ6KLSH4 · pith_short_16: ETM4XZ6KLSH4GA2E · pith_short_8: ETM4XZ6K

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/ETM4XZ6KLSH4GA2ERM753DXPFJ \
  | 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: 24d9cbe7ca5c8fc303448b3fdd8eef2a6d5b8db6d5c352ebd635f2b6edbf9a2a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f2f6af728c4a2169cb304ec6a1a012b7a38fabcb6b83d7a43e03260bcfed736f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-03-13T11:56:03Z",
    "title_canon_sha256": "8df9ffe7287161fba8319231ff4046bff25dca29975d92ce0255b7025def8125"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0703306",
    "kind": "arxiv",
    "version": 2
  }
}