Pith Number

pith:YGKDCO6W

pith:2008:YGKDCO6WSBTTUSTPVHHM3G5HFN

not attested not anchored not stored refs pending

Measuring the Sources of the Intergalactic Ionizing Flux

A. J. Barger, L. L. Cowie, L. Trouille

arxiv:0811.1042 v1 · 2008-11-06 · 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{YGKDCO6WSBTTUSTPVHHM3G5HFN}

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	2026-05-18T04:29:25.368030Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c194313bd690673a4a6fa9cecd9ba72b7471ce92a38d481258bce9d4c5a4ce3b

Aliases

arxiv: 0811.1042 · arxiv_version: 0811.1042v1 · doi: 10.48550/arxiv.0811.1042 · pith_short_12: YGKDCO6WSBTT · pith_short_16: YGKDCO6WSBTTUSTP · pith_short_8: YGKDCO6W

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/YGKDCO6WSBTTUSTPVHHM3G5HFN \
  | 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: c194313bd690673a4a6fa9cecd9ba72b7471ce92a38d481258bce9d4c5a4ce3b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b1f00cf4276de3385374abc195ed0f73716bb94d7bc60a5d1a7e8bf22f66d597",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-11-06T21:03:01Z",
    "title_canon_sha256": "a810dba8e0c24e3179eae7810cdf4a0f736a7c7dae17a404a00755e9b7e09e8f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0811.1042",
    "kind": "arxiv",
    "version": 1
  }
}