Pith Number

pith:H2HSYK74

pith:2013:H2HSYK74NJ74E7KWFYPPSSES6G

not attested not anchored not stored refs pending

How the diffuse Universe cools

Anthony Aguirre (UCSC), Joop Schaye (Leiden Observatory), Serena Bertone (ESA/Aviospace)

arxiv:1301.5330 v1 · 2013-01-22 · 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{H2HSYK74NJ74E7KWFYPPSSES6G}

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	2026-05-18T01:52:04.513213Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3e8f2c2bfc6a7fc27d562e1ef94892f1ac053f5b41538eb28bd23f1cc3c93a63

Aliases

arxiv: 1301.5330 · arxiv_version: 1301.5330v1 · doi: 10.48550/arxiv.1301.5330 · pith_short_12: H2HSYK74NJ74 · pith_short_16: H2HSYK74NJ74E7KW · pith_short_8: H2HSYK74

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/H2HSYK74NJ74E7KWFYPPSSES6G \
  | 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: 3e8f2c2bfc6a7fc27d562e1ef94892f1ac053f5b41538eb28bd23f1cc3c93a63

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88e8c2561a8c54a1339bcd0bc0f7f6e5f3c9d1031c004146462a60728569744b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-01-22T21:05:38Z",
    "title_canon_sha256": "ec800e55ee247ea30fb627aedc857a04aa08ecd8778d2a0c28ee225f28342ae8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.5330",
    "kind": "arxiv",
    "version": 1
  }
}