Pith Number

pith:HQYL6GVL

pith:2018:HQYL6GVLF2LQJYKVN4MJVWP3BD

not attested not anchored not stored refs pending

Automatic Classification of Roof Shapes for Multicopter Emergency Landing Site Selection

Ella M. Atkins, Jeremy D. Castagno

arxiv:1802.06274 v1 · 2018-02-17 · cs.RO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HQYL6GVLF2LQJYKVN4MJVWP3BD}

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	2026-05-18T00:23:03.831866Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c30bf1aab2e9704e1556f189ad9fb08c971e4908d24de074d50d763eb1bfbef

Aliases

arxiv: 1802.06274 · arxiv_version: 1802.06274v1 · doi: 10.48550/arxiv.1802.06274 · pith_short_12: HQYL6GVLF2LQ · pith_short_16: HQYL6GVLF2LQJYKV · pith_short_8: HQYL6GVL

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/HQYL6GVLF2LQJYKVN4MJVWP3BD \
  | 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: 3c30bf1aab2e9704e1556f189ad9fb08c971e4908d24de074d50d763eb1bfbef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "22efd00432c103534d2ecc5c03b9912007a4d96527c94d69906bc95b95c23f02",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.RO",
    "submitted_at": "2018-02-17T19:03:41Z",
    "title_canon_sha256": "f08508a2f170e7513e4841a7ebdd0c2407c8c61ac9356e325a953b32d6667728"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.06274",
    "kind": "arxiv",
    "version": 1
  }
}