Pith Number

pith:PAPZVEGR

pith:2014:PAPZVEGRPKRYITYJLDRJS76VMG

not attested not anchored not stored refs pending

The Photon Underproduction Crisis

Amanda B. Ford, Benjamin D. Oppenheimer, Charles Danforth, David H. Weinberg, Francesco Haardt, Joseph McEwen, Juna A. Kollmeier, Mark Fardal, Molly S. Peeples, Neal Katz, Piero Madau, Romeel A. Dav\'e

arxiv:1404.2933 v1 · 2014-04-10 · 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{PAPZVEGRPKRYITYJLDRJS76VMG}

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	2026-05-18T01:43:35.546213Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

781f9a90d17aa3844f0958e2997fd5619d738acd14dc5deb8c88938ed4bec450

Aliases

arxiv: 1404.2933 · arxiv_version: 1404.2933v1 · doi: 10.48550/arxiv.1404.2933 · pith_short_12: PAPZVEGRPKRY · pith_short_16: PAPZVEGRPKRYITYJ · pith_short_8: PAPZVEGR

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/PAPZVEGRPKRYITYJLDRJS76VMG \
  | 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: 781f9a90d17aa3844f0958e2997fd5619d738acd14dc5deb8c88938ed4bec450

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ca440352f387559c5a898a14e586f91724492ce139ab3990b42034885c552ab9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2014-04-10T20:00:15Z",
    "title_canon_sha256": "88f583ed74c8bf894fe494736fd207d680e90a87d43eb901ddf9a44a6ce16849"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.2933",
    "kind": "arxiv",
    "version": 1
  }
}