Pith Number

pith:M7JAH7Q2

pith:2016:M7JAH7Q2LOJTTDYN7WIA2Y2LWE

not attested not anchored not stored refs pending

Mass extinctions and supernova explosions

Gunther Korschinek

arxiv:1609.02817 v1 · 2016-09-09 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{M7JAH7Q2LOJTTDYN7WIA2Y2LWE}

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	2026-05-18T00:17:44.349905Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

67d203fe1a5b93398f0dfd900d634bb1287e7bc27709be9e6ef7dcc852956d84

Aliases

arxiv: 1609.02817 · arxiv_version: 1609.02817v1 · doi: 10.48550/arxiv.1609.02817 · pith_short_12: M7JAH7Q2LOJT · pith_short_16: M7JAH7Q2LOJTTDYN · pith_short_8: M7JAH7Q2

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/M7JAH7Q2LOJTTDYN7WIA2Y2LWE \
  | 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: 67d203fe1a5b93398f0dfd900d634bb1287e7bc27709be9e6ef7dcc852956d84

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2622319727b36456d76434f6212535ce892a9f7a548c48dbbfd792e8912cea9f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2016-09-09T14:50:42Z",
    "title_canon_sha256": "a734c893b3eb0d42ce09782be0160f75853ed861a03db37136390d4d83051c91"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.02817",
    "kind": "arxiv",
    "version": 1
  }
}