Pith Number

pith:QG5VUOXH

pith:2017:QG5VUOXHUJZADQSXJUXAFDKMVA

not attested not anchored not stored refs pending

An Observational Upper Limit on the Interstellar Number Density of Asteroids and Comets

Alan Fitzsimmons, Bonnie Meinke, Ed Beshore, Larry Denneau, Peter Veres, Robert Jedicke, Toni Engelhardt

arxiv:1702.02237 v1 · 2017-02-08 · 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{QG5VUOXHUJZADQSXJUXAFDKMVA}

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.

Cited by

1 paper in Pith

The Natural History of 'Oumuamua

Receipt and verification

First computed	2026-05-18T00:49:09.216628Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81bb5a3ae7a27201c2574d2e028d4ca82c17a3470458549ee7405c44c47c483f

Aliases

arxiv: 1702.02237 · arxiv_version: 1702.02237v1 · doi: 10.48550/arxiv.1702.02237 · pith_short_12: QG5VUOXHUJZA · pith_short_16: QG5VUOXHUJZADQSX · pith_short_8: QG5VUOXH

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/QG5VUOXHUJZADQSXJUXAFDKMVA \
  | 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: 81bb5a3ae7a27201c2574d2e028d4ca82c17a3470458549ee7405c44c47c483f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9a27f7fac99041715439a09986388cfbe9ca1261c54bfaa6ebb0f1190c2b22bc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2017-02-08T00:55:59Z",
    "title_canon_sha256": "880960849439fba2fc33fdedbbb9d6595a79beae35b3bf65df506b8503879a75"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.02237",
    "kind": "arxiv",
    "version": 1
  }
}