Pith Number

pith:YG2LD2DP

pith:2021:YG2LD2DP2TGZ42KPCKOKNTAIMO

not attested not anchored not stored refs pending

Flying Robots for Safe and Efficient Parcel Delivery Within the COVID-19 Pandemic

Benjamin Sliwa, Christian Wietfeld, Manuel Patchou

arxiv:2101.07877 v1 · 2021-01-19 · cs.NI · 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{YG2LD2DP2TGZ42KPCKOKNTAIMO}

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	2026-07-05T02:08:22.839651Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c1b4b1e86fd4cd9e694f129ca6cc08638a892a18620d57d4356e740e5b0b0f6d

Aliases

arxiv: 2101.07877 · arxiv_version: 2101.07877v1 · doi: 10.48550/arxiv.2101.07877 · pith_short_12: YG2LD2DP2TGZ · pith_short_16: YG2LD2DP2TGZ42KP · pith_short_8: YG2LD2DP

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/YG2LD2DP2TGZ42KPCKOKNTAIMO \
  | 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: c1b4b1e86fd4cd9e694f129ca6cc08638a892a18620d57d4356e740e5b0b0f6d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ddcc9260e548429b3dd7c2afe80850b211086bf75725dd256edab64fa6593d34",
    "cross_cats_sorted": [
      "cs.RO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NI",
    "submitted_at": "2021-01-19T21:54:22Z",
    "title_canon_sha256": "43229f6c6fd4ee620396cc3a67568f935bdeb1939bdfaf35f5f2e14fa9161e80"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.07877",
    "kind": "arxiv",
    "version": 1
  }
}