Pith Number

pith:55ZVH32M

pith:2009:55ZVH32MWCMFZMVPAQGBCRH7K6

not attested not anchored not stored refs pending

Frequency Limits on Naked-Eye Optical Transients Lasting from Minutes to Years

Lior Shamir, Robert J. Nemiroff

arxiv:0908.3123 v1 · 2009-08-21 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{55ZVH32MWCMFZMVPAQGBCRH7K6}

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	2026-05-18T02:12:24.265492Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef7353ef4cb0985cb2af040c1144ff578e7f7b6156b6c8b8ba5a2559612dd9c4

Aliases

arxiv: 0908.3123 · arxiv_version: 0908.3123v1 · doi: 10.48550/arxiv.0908.3123 · pith_short_12: 55ZVH32MWCMF · pith_short_16: 55ZVH32MWCMFZMVP · pith_short_8: 55ZVH32M

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/55ZVH32MWCMFZMVPAQGBCRH7K6 \
  | 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: ef7353ef4cb0985cb2af040c1144ff578e7f7b6156b6c8b8ba5a2559612dd9c4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7fff7b20f7909f6c1a44049bdf111c8a1431ac9bb17ba866767d7c2f0e1c2d33",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2009-08-21T13:22:41Z",
    "title_canon_sha256": "3fca743da303518b47b3dfcfc573cd40f96243a042e606e91d64bec227b80336"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.3123",
    "kind": "arxiv",
    "version": 1
  }
}