Pith Number

pith:BLVBPSDF

pith:2026:BLVBPSDFF2KFRCHLACHZXWXLMP

not attested not anchored not stored refs pending

The Lumina Project: CMB Optical Depth Fluctuations from Patchy Reionization

(2) CfA, (3) York, (4) MIT, (5) MPA), Aaron Smith (1), Lars Hernquist (2), Mark Vogelsberger (4), Meredith Neyer (4) ((1) UT Dallas, Oliver Zier (2), Rahul Kannan (3), Rongrong Liu (2), Ruediger Pakmor (5), Sonja M. Koehler (2), Volker Springel (5), Xuejian Shen (4)

arxiv:2605.18939 v1 · 2026-05-18 · astro-ph.CO · 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{BLVBPSDFF2KFRCHLACHZXWXLMP}

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	2026-05-20T00:06:37.390270Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0aea17c8652e945888eb008f9bdaeb63d4a70bb855ea248b4f5873f01dbf552b

Aliases

arxiv: 2605.18939 · arxiv_version: 2605.18939v1 · doi: 10.48550/arxiv.2605.18939 · pith_short_12: BLVBPSDFF2KF · pith_short_16: BLVBPSDFF2KFRCHL · pith_short_8: BLVBPSDF

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/BLVBPSDFF2KFRCHLACHZXWXLMP \
  | 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: 0aea17c8652e945888eb008f9bdaeb63d4a70bb855ea248b4f5873f01dbf552b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "435e31a6e70754c894cfecda3a53e400fb0a04ca8d422309835cefcc8b95a425",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2026-05-18T18:00:00Z",
    "title_canon_sha256": "13611cbb301598a3ca912a38f8c00161030cb6b7291576882cbaeb92bd99fb7e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.18939",
    "kind": "arxiv",
    "version": 1
  }
}