Pith Number

pith:NH53W3QQ

pith:2009:NH53W3QQ4CXPTA3NR3CEHONIM6

not attested not anchored not stored refs pending

A Radio System for Avoiding Illuminating Aircraft with a Laser Beam

B. B. Baumgartner, G. A. White, J. F. Melser, J. K. Tu, K. Bales, K. H. Kassabian, T. W. Murphy Jr., W. A. Coles

arxiv:0910.5685 v1 · 2009-10-29 · 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{NH53W3QQ4CXPTA3NR3CEHONIM6}

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	2026-05-18T02:11:01.659755Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

69fbbb6e10e0aef9836d8ec443b9a86791de6abd4c6d2d89752c960b5fe59407

Aliases

arxiv: 0910.5685 · arxiv_version: 0910.5685v1 · doi: 10.48550/arxiv.0910.5685 · pith_short_12: NH53W3QQ4CXP · pith_short_16: NH53W3QQ4CXPTA3N · pith_short_8: NH53W3QQ

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/NH53W3QQ4CXPTA3NR3CEHONIM6 \
  | 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: 69fbbb6e10e0aef9836d8ec443b9a86791de6abd4c6d2d89752c960b5fe59407

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "49e2b89bec03ee0e0b2d1d4ccfb9daad59b1775218b1c9ff7249ca59b8751e39",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2009-10-29T17:30:19Z",
    "title_canon_sha256": "0e958fb4298b683401b54bf1b550bf1087484733f0a2e04c3e9c6bc633ed4dce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.5685",
    "kind": "arxiv",
    "version": 1
  }
}