Pith Number

pith:7OAMOH76

pith:2016:7OAMOH76XNUMU6HS6OCRRFWYCT

not attested not anchored not stored refs pending

Efficient Optical flow and Stereo Vision for Velocity Estimation and Obstacle Avoidance on an Autonomous Pocket Drone

Christophe de Wagter, Guido de Croon, Hilbert Kappen, Karl Tuyls, Kimberly McGuire

arxiv:1612.06702 v2 · 2016-12-20 · 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{7OAMOH76XNUMU6HS6OCRRFWYCT}

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	2026-05-18T00:48:41.954861Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb80c71ffebb68ca78f2f3851896d814d7229a06c2444214664ca10d8bfa4c5b

Aliases

arxiv: 1612.06702 · arxiv_version: 1612.06702v2 · doi: 10.48550/arxiv.1612.06702 · pith_short_12: 7OAMOH76XNUM · pith_short_16: 7OAMOH76XNUMU6HS · pith_short_8: 7OAMOH76

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/7OAMOH76XNUMU6HS6OCRRFWYCT \
  | 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: fb80c71ffebb68ca78f2f3851896d814d7229a06c2444214664ca10d8bfa4c5b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "84dc0a6bdeb9123e9ee3067d3dad0277ad60728a051b69f02e138ffcad8bb251",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.RO",
    "submitted_at": "2016-12-20T15:11:27Z",
    "title_canon_sha256": "a0054195cf39dc8cc1eacdeb5bdb5308467365e06739d63ca09ae3b02fdb4678"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.06702",
    "kind": "arxiv",
    "version": 2
  }
}