Pith Number

pith:5IJNAPW7

pith:2018:5IJNAPW7MTIRFFN3TIX7GEEIQZ

not attested not anchored not stored refs pending

Fingertip Detection and Tracking for Recognition of Air-Writing in Videos

Arif Ahmed, Debi Prosad Dogra, Partha Pratim Roy, Samarjit Kar, Sohom Mukherjee

arxiv:1809.03016 v1 · 2018-09-09 · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5IJNAPW7MTIRFFN3TIX7GEEIQZ}

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	2026-05-17T23:42:03.053104Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ea12d03edf64d11295bb9a2ff310888651796a5e138620c9e3a7ff8b100e40e6

Aliases

arxiv: 1809.03016 · arxiv_version: 1809.03016v1 · doi: 10.48550/arxiv.1809.03016 · pith_short_12: 5IJNAPW7MTIR · pith_short_16: 5IJNAPW7MTIRFFN3 · pith_short_8: 5IJNAPW7

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/5IJNAPW7MTIRFFN3TIX7GEEIQZ \
  | 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: ea12d03edf64d11295bb9a2ff310888651796a5e138620c9e3a7ff8b100e40e6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3a73a39aa0cb584909fd6f2bb91745809da27bfc243eced6b15b126e05d48c4a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2018-09-09T18:10:59Z",
    "title_canon_sha256": "93f6c8471471e37b3eae7a23721ed8b6013e4c6269683566c101c44edac675cf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.03016",
    "kind": "arxiv",
    "version": 1
  }
}