Pith Number

pith:KFJ7CQSZ

pith:2009:KFJ7CQSZGXZSZXXG5FCRVFDRTY

not attested not anchored not stored refs pending

Continuous Monitoring of Comet Holmes from Before the 2007 Outburst

(2) MMT Observatory, AZ, E. E. El-Houssieny (1), Houghton, MI, Michigan Technological University, R. J. Nemiroff (1), T. E. Pickering (2) ((1) Department of Physics, Tucson, University of Arizona, USA, USA)

arxiv:0908.1450 v2 · 2009-08-11 · astro-ph.EP · 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{KFJ7CQSZGXZSZXXG5FCRVFDRTY}

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	2026-05-18T04:41:35.935420Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5153f1425935f32cdee6e9451a94719e35e4fec6e2d393c5ebd95d526d333140

Aliases

arxiv: 0908.1450 · arxiv_version: 0908.1450v2 · doi: 10.48550/arxiv.0908.1450 · pith_short_12: KFJ7CQSZGXZS · pith_short_16: KFJ7CQSZGXZSZXXG · pith_short_8: KFJ7CQSZ

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/KFJ7CQSZGXZSZXXG5FCRVFDRTY \
  | 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: 5153f1425935f32cdee6e9451a94719e35e4fec6e2d393c5ebd95d526d333140

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "35588a0c4053e0f392ff94c80913d39b0a1d55743c5b58e57c8845b8fccab864",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2009-08-11T04:34:00Z",
    "title_canon_sha256": "90f2817478dac513d4be3ad85baba89df37b012e982186e4e419fcc06ab75d6f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.1450",
    "kind": "arxiv",
    "version": 2
  }
}