Pith Number

pith:QNOJ7QZM

pith:2021:QNOJ7QZM3KFBQSW2TPBPSYMYFC

not attested not anchored not stored refs pending

Investigating the risks of debris-generating ASAT tests in the presence of megaconstellations

Aaron C. Boley, Sarah Thiele

arxiv:2111.12196 v2 · 2021-11-23 · astro-ph.EP · astro-ph.IM · physics.space-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QNOJ7QZM3KFBQSW2TPBPSYMYFC}

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	2026-07-05T05:27:46.715813Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

835c9fc32cda8a184ada9bc2f96198289fced7019b3a50babb2d951841dee778

Aliases

arxiv: 2111.12196 · arxiv_version: 2111.12196v2 · doi: 10.48550/arxiv.2111.12196 · pith_short_12: QNOJ7QZM3KFB · pith_short_16: QNOJ7QZM3KFBQSW2 · pith_short_8: QNOJ7QZM

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/QNOJ7QZM3KFBQSW2TPBPSYMYFC \
  | 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: 835c9fc32cda8a184ada9bc2f96198289fced7019b3a50babb2d951841dee778

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c0ae1fcd62754984c1bc9d834d1647c630b37e770c2d0e58a44dd9c86036a0a9",
    "cross_cats_sorted": [
      "astro-ph.IM",
      "physics.space-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2021-11-23T23:40:07Z",
    "title_canon_sha256": "5666756d1e0bbd7f103d6c57ce2132ec135364118a9379e72128db436bbeecae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.12196",
    "kind": "arxiv",
    "version": 2
  }
}