Pith Number

pith:DSSCUL4C

pith:2019:DSSCUL4CZGEXSOAZER6TPP3RUZ

not attested not anchored not stored refs pending

A Cosmic UV/X-ray Background Model Update

C.-A. Faucher-Giguere (Northwestern University)

arxiv:1903.08657 v2 · 2019-03-20 · astro-ph.CO · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DSSCUL4CZGEXSOAZER6TPP3RUZ}

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

3 papers in Pith

Strongest constraints on dark acoustic oscillations from the Lyman-alpha forest

Closing the UV Gap: Rest-frame EUV science from high-redshift QSOs as a legacy-defining capability

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

Receipt and verification

First computed	2026-07-05T00:38:01.373357Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1ca42a2f82c989793819247d37bf71a67815f413b86a5add279f5c7765b06878

Aliases

arxiv: 1903.08657 · arxiv_version: 1903.08657v2 · doi: 10.48550/arxiv.1903.08657 · pith_short_12: DSSCUL4CZGEX · pith_short_16: DSSCUL4CZGEXSOAZ · pith_short_8: DSSCUL4C

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/DSSCUL4CZGEXSOAZER6TPP3RUZ \
  | 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: 1ca42a2f82c989793819247d37bf71a67815f413b86a5add279f5c7765b06878

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "54bc5c56f0cceb278bce617eb358d30b16874b2bc86767d1dc4acb8715c35d0d",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2019-03-20T18:00:00Z",
    "title_canon_sha256": "16908e08f4a63adccddffce0a2ac64f8b80ee37b8df9f935c03e099396a7a4a0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.08657",
    "kind": "arxiv",
    "version": 2
  }
}