Pith Number

pith:GGO5GY4X

pith:2007:GGO5GY4XOBKOZCMNJVDKYBMLVO

not attested not anchored not stored refs pending

A New Constraint on the Escape Fraction in Distant Galaxies Using Gamma-ray Burst Afterglow Spectroscopy

Hsiao-Wen Chen (U Chicago), Jason X. Prochaska (UCO/Lick Observatory), Nickolay Y. Gnedin (Fermilab)

arxiv:0707.2594 v2 · 2007-07-17 · 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{GGO5GY4XOBKOZCMNJVDKYBMLVO}

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	2026-05-18T04:36:42.062758Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

319dd363977054ec898d4d46ac058bab83cca5bb9d872b278a98198dae2cc56c

Aliases

arxiv: 0707.2594 · arxiv_version: 0707.2594v2 · doi: 10.48550/arxiv.0707.2594 · pith_short_12: GGO5GY4XOBKO · pith_short_16: GGO5GY4XOBKOZCMN · pith_short_8: GGO5GY4X

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/GGO5GY4XOBKOZCMNJVDKYBMLVO \
  | 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: 319dd363977054ec898d4d46ac058bab83cca5bb9d872b278a98198dae2cc56c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "16e4b9c7c4ffe97677db2ee479a1ba0b8c7be4bade5b87f8695c6839b60a0225",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-07-17T20:01:29Z",
    "title_canon_sha256": "7004c6ed4a7936056db5c598b8758c297febb8ddfc20b2d98dfca232a99ca71a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0707.2594",
    "kind": "arxiv",
    "version": 2
  }
}