Pith Number

pith:NGXUT6IM

pith:2018:NGXUT6IMKLPXM73IAISAL7WPPL

not attested not anchored not stored refs pending

Interstellar communication. XI. Short pulse duration limits of optical SETI

Michael Hippke

arxiv:1804.01251 v1 · 2018-04-04 · 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{NGXUT6IMKLPXM73IAISAL7WPPL}

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	2026-05-17T23:58:41.778406Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

69af49f90c52df767f68022405fecf7aefc286085858dea1395f8b313982dd4c

Aliases

arxiv: 1804.01251 · arxiv_version: 1804.01251v1 · doi: 10.48550/arxiv.1804.01251 · pith_short_12: NGXUT6IMKLPX · pith_short_16: NGXUT6IMKLPXM73I · pith_short_8: NGXUT6IM

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/NGXUT6IMKLPXM73IAISAL7WPPL \
  | 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: 69af49f90c52df767f68022405fecf7aefc286085858dea1395f8b313982dd4c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "df0d13dd88f7ea5147de9f79435e031a9337de318119e37621fdb01564fe71f8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2018-04-04T06:29:29Z",
    "title_canon_sha256": "32d461f47c2edf53e5955a2fd0256ea25de013f6b35d0196d13b56608b8fc7ba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.01251",
    "kind": "arxiv",
    "version": 1
  }
}