Pith Number

pith:5HA7NWZU

pith:2022:5HA7NWZUFXHPPCPG32Y4DB5VJM

not attested not anchored not stored refs pending

Onboard Safety Guarantees for Racing Drones: High-speed Geofencing with Control Barrier Functions

Aaron D. Ames, Aiden Swann, Andrew Singletary, Yuxiao Chen

arxiv:2201.04331 v1 · 2022-01-12 · eess.SY · cs.RO · cs.SY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5HA7NWZUFXHPPCPG32Y4DB5VJM}

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	2026-07-05T03:47:59.253514Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e9c1f6db342dcef789e6deb1c187b54b2ceae8e7aee98c71040d2b51147be7eb

Aliases

arxiv: 2201.04331 · arxiv_version: 2201.04331v1 · doi: 10.48550/arxiv.2201.04331 · pith_short_12: 5HA7NWZUFXHP · pith_short_16: 5HA7NWZUFXHPPCPG · pith_short_8: 5HA7NWZU

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/5HA7NWZUFXHPPCPG32Y4DB5VJM \
  | 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: e9c1f6db342dcef789e6deb1c187b54b2ceae8e7aee98c71040d2b51147be7eb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "656372a8e1df8e7fa2225eb1c513e075b18bcffc5b5542274818aaea0cb5f452",
    "cross_cats_sorted": [
      "cs.RO",
      "cs.SY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SY",
    "submitted_at": "2022-01-12T06:39:27Z",
    "title_canon_sha256": "5e1e48b4a9661a6d0403e878a21cc3f818e8f3eb9daf8e1cc56bd3f062c40cd9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2201.04331",
    "kind": "arxiv",
    "version": 1
  }
}