Pith Number

pith:OXDXYMLA

pith:2018:OXDXYMLAR4U7F5DCE4L2IRHCNF

not attested not anchored not stored refs pending

The evolution of the UV-to-mm extragalactic background light: evidence for a top-heavy initial mass function?

4) ((1) Kapteyn Astronomical Institute, Carlos S. Frenk (2), Carlton M. Baugh (2), Cedric G. Lacey (2), Claudia del P. Lagos (3, Copenhagen), Durham University (3) ICRAR, Shaun Cole (2), University of Groningen (2) ICC, UWA (4) ASTRO3D (5) DAWN, William. I. Cowley (1)

arxiv:1808.05208 v4 · 2018-08-15 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OXDXYMLAR4U7F5DCE4L2IRHCNF}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-17T23:43:04.726354Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

75c77c31608f29f2f4622717a444e26961d2847e42cd461da8a3a53bb1a6d42b

Aliases

arxiv: 1808.05208 · arxiv_version: 1808.05208v4 · doi: 10.48550/arxiv.1808.05208 · pith_short_12: OXDXYMLAR4U7 · pith_short_16: OXDXYMLAR4U7F5DC · pith_short_8: OXDXYMLA

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/OXDXYMLAR4U7F5DCE4L2IRHCNF \
  | 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: 75c77c31608f29f2f4622717a444e26961d2847e42cd461da8a3a53bb1a6d42b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e2cc23f26b6a1e34834448dcbae65a7624c44a52dbeeeb3065151d683c97c2f3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-08-15T17:57:18Z",
    "title_canon_sha256": "69e203e594f011afe8b82a8758d0bfb1d71b902c93e6a65a806a2f928f4ec360"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.05208",
    "kind": "arxiv",
    "version": 4
  }
}