Pith Number

pith:ZHBQTA5O

pith:2018:ZHBQTA5O3L3DNBS674V2INQ7WS

not attested not anchored not stored refs pending

The fraction of ionizing radiation from massive stars that escapes to the intergalactic medium

A. Cucchiara, A. de Ugarte Postigo, A. Gomboc, A. J. Levan, B. Milvang-Jensen, C. C. Thoene, D. A. Kann, D. A. Perley, D. Malesani, D. Watson, D. Xu, E. Berger, E. R. Stanway, G. Pugliese, G. Tagliaferri, J. Hjorth, J. Japelj, J. P. U. Fynbo, J. Selsing, K. E. Heintz, K. Wiersema, L. Izzo, L. Kaper, M. Myers, M. Sparre, N. R. Tanvir, P. Goldoni, P. Jakobsson, P. M. Vreeswijk, R. A. M. J. Wijers, R. Chornock, R. Sanchez-Ramirez, S. B. Cenko, S. Covino, S. Piranomonte, S. Schulze, S. Vergani, T. Kruehler, T. Laskar, V. D'Elia, Z. Cano

arxiv:1805.07318 v1 · 2018-05-18 · astro-ph.GA · 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{ZHBQTA5O3L3DNBS674V2INQ7WS}

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	2026-05-17T23:57:41.334189Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c9c30983aedaf636865eff2ba4361fb4922e97e61831a68065d58065bfe4702e

Aliases

arxiv: 1805.07318 · arxiv_version: 1805.07318v1 · doi: 10.48550/arxiv.1805.07318 · pith_short_12: ZHBQTA5O3L3D · pith_short_16: ZHBQTA5O3L3DNBS6 · pith_short_8: ZHBQTA5O

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/ZHBQTA5O3L3DNBS674V2INQ7WS \
  | 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: c9c30983aedaf636865eff2ba4361fb4922e97e61831a68065d58065bfe4702e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cae2c39850cb7f0c87a38496357da36673c1016f57fe49b14cd0529fb2fac903",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-05-18T16:34:03Z",
    "title_canon_sha256": "edbde3f6fed71310e5d6c46448133575505c7b6d1cc4740eab28200356ef6476"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.07318",
    "kind": "arxiv",
    "version": 1
  }
}