Pith Number

pith:WWDCTJGC

pith:2025:WWDCTJGCA77OLVMHRKC7RVBZLJ

not attested not anchored not stored refs pending

Learning the Universe: physically-motivated priors for dust attenuation curves

Austen Gabrielpillai, Christopher C. Hayward, Christopher C. Lovell, Gerg\"o Popping, Kartheik Iyer, Laura Sommovigo, Lucia A. Perez, Matthew Ho, Rachel K. Cochrane, Rachel S. Somerville, Tjitske Starkenburg, Ulrich P. Steinwandel

arxiv:2502.13240 v1 · 2025-02-18 · 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{WWDCTJGCA77OLVMHRKC7RVBZLJ}

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	2026-07-05T10:16:44.264980Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b58629a4c207fee5d5878a85f8d4395a6306d6b9ad8f46be49b457254cf02878

Aliases

arxiv: 2502.13240 · arxiv_version: 2502.13240v1 · doi: 10.48550/arxiv.2502.13240 · pith_short_12: WWDCTJGCA77O · pith_short_16: WWDCTJGCA77OLVMH · pith_short_8: WWDCTJGC

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/WWDCTJGCA77OLVMHRKC7RVBZLJ \
  | 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: b58629a4c207fee5d5878a85f8d4395a6306d6b9ad8f46be49b457254cf02878

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "77dfd1d2f128f170859d4767ebefec46ba0efe90fd15e2e04f614b0514b02412",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2025-02-18T19:17:00Z",
    "title_canon_sha256": "4684ca30527371326f767a439dac414281d40641ba39596d5ee8cfb37bb28cc3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.13240",
    "kind": "arxiv",
    "version": 1
  }
}