Pith Number

pith:CQVL7OSC

pith:2025:CQVL7OSCBJZULZOYCB3P7FEORN

not attested not anchored not stored refs pending

PRREACH: Probabilistic Risk Assessment Using Reachability for UAV Control

Hariharan Narayanan, Houssam Abbas, Nicole Fronda, Sadia Afrin Ananna, Steven Weber

arxiv:2509.04451 v1 · 2025-08-20 · 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{CQVL7OSCBJZULZOYCB3P7FEORN}

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	2026-07-05T12:05:23.192428Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

142abfba420a7345e5d81076ff948e8b761020518cd96e63cec655ee7fc8f45b

Aliases

arxiv: 2509.04451 · arxiv_version: 2509.04451v1 · doi: 10.48550/arxiv.2509.04451 · pith_short_12: CQVL7OSCBJZU · pith_short_16: CQVL7OSCBJZULZOY · pith_short_8: CQVL7OSC

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/CQVL7OSCBJZULZOYCB3P7FEORN \
  | 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: 142abfba420a7345e5d81076ff948e8b761020518cd96e63cec655ee7fc8f45b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e9430368f8d658c6b2faf251242d9af78a14c63ef6592b81e30c40a824b5d0fa",
    "cross_cats_sorted": [
      "cs.RO",
      "cs.SY"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "eess.SY",
    "submitted_at": "2025-08-20T03:22:09Z",
    "title_canon_sha256": "83ee0314acf1f997b240075ee3cd8a36ba2e2be0045b333a9d851c5a42404d36"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.04451",
    "kind": "arxiv",
    "version": 1
  }
}