Pith Number

pith:3W3BV4S4

pith:2013:3W3BV4S4J7K3NWO2E4RSZON2JO

not attested not anchored not stored refs pending

Classifying Supernovae Using Only Galaxy Data

Kaisey Mandel, Ryan J. Foley

arxiv:1309.2630 v2 · 2013-09-10 · astro-ph.CO · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3W3BV4S4J7K3NWO2E4RSZON2JO}

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	2026-05-18T01:47:43.571606Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ddb61af25c4fd5b6d9da27232cb9ba4bb433043aa3843c69a2e2768f778a9339

Aliases

arxiv: 1309.2630 · arxiv_version: 1309.2630v2 · doi: 10.48550/arxiv.1309.2630 · pith_short_12: 3W3BV4S4J7K3 · pith_short_16: 3W3BV4S4J7K3NWO2 · pith_short_8: 3W3BV4S4

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/3W3BV4S4J7K3NWO2E4RSZON2JO \
  | 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: ddb61af25c4fd5b6d9da27232cb9ba4bb433043aa3843c69a2e2768f778a9339

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e3e98e0d91c1eb78bab2f0ec40d63824953ca87bfc95a7965fb6cfb7afd70fe6",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-09-10T20:00:00Z",
    "title_canon_sha256": "76b9a0acf93b49a59893f5c4fb8558df0680efe046dd9b6343b3f12190eecc0a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.2630",
    "kind": "arxiv",
    "version": 2
  }
}