Pith Number

pith:P6ZDTMGT

pith:2015:P6ZDTMGT6P6P7LI2R5NUEQXJS3

not attested not anchored not stored refs pending

The Metagalactic Ionizing Background: A Crisis in UV Photon Production or Incorrect Galaxy Escape Fractions?

Charles W. Danforth, Evan M. Tilton, J. Michael Shull, Joshua Moloney

arxiv:1502.00637 v2 · 2015-02-02 · 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{P6ZDTMGT6P6P7LI2R5NUEQXJS3}

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

1 paper in Pith

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

Receipt and verification

First computed	2026-05-18T01:32:30.263878Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7fb239b0d3f3fcffad1a8f5b4242e996c7b0e5657bbe87b4b4e8b3e7887b2fd0

Aliases

arxiv: 1502.00637 · arxiv_version: 1502.00637v2 · doi: 10.48550/arxiv.1502.00637 · pith_short_12: P6ZDTMGT6P6P · pith_short_16: P6ZDTMGT6P6P7LI2 · pith_short_8: P6ZDTMGT

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/P6ZDTMGT6P6P7LI2R5NUEQXJS3 \
  | 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: 7fb239b0d3f3fcffad1a8f5b4242e996c7b0e5657bbe87b4b4e8b3e7887b2fd0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88c767454a0c92d05c4c6e142c4f24e94b0d40db267cce72cf62fb113e5d0041",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2015-02-02T21:00:15Z",
    "title_canon_sha256": "d50f30a76b82335056c90fa60b192a0972c4f52cf03877f7d5a40c34f631efbe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.00637",
    "kind": "arxiv",
    "version": 2
  }
}