Pith Number

pith:ELF5S4TQ

pith:2013:ELF5S4TQYNGPOJPTJXGLKK665P

not attested not anchored not stored refs pending

Will Comet ISON (C/2012 S1) Survive Perihelion?

Kevin J. Walsh, Matthew M. Knight

arxiv:1309.2288 v1 · 2013-09-09 · 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{ELF5S4TQYNGPOJPTJXGLKK665P}

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	2026-05-18T01:47:44.111550Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

22cbd97270c34cf725f34dccb52bdeebfc39fa25a85f0ae7649578bae9886ebe

Aliases

arxiv: 1309.2288 · arxiv_version: 1309.2288v1 · doi: 10.48550/arxiv.1309.2288 · pith_short_12: ELF5S4TQYNGP · pith_short_16: ELF5S4TQYNGPOJPT · pith_short_8: ELF5S4TQ

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/ELF5S4TQYNGPOJPTJXGLKK665P \
  | 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: 22cbd97270c34cf725f34dccb52bdeebfc39fa25a85f0ae7649578bae9886ebe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "795d07e064e66a979e4cd9246c5f1d61703124caa3eedcb4c4ac275b562d7a8f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2013-09-09T20:00:02Z",
    "title_canon_sha256": "cbc5ed556f7481ad6bba4ffbe2fb52852c0e01d85396b9c40f324dcff9d18ffe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.2288",
    "kind": "arxiv",
    "version": 1
  }
}