Pith Number

pith:U7ZP2RMK

pith:2015:U7ZP2RMKJXSGCXK4TT7QK6ICQM

not attested not anchored not stored refs pending

Online Handwritten Devanagari Stroke Recognition Using Extended Directional Features

Lajish VL, Sunil Kumar Kopparapu

arxiv:1501.02887 v1 · 2015-01-11 · 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{U7ZP2RMKJXSGCXK4TT7QK6ICQM}

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	2026-05-18T02:29:31.001831Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7f2fd458a4de4615d5c9cff057902831bc6ae05c27e6d31674a1e7da6878a26

Aliases

arxiv: 1501.02887 · arxiv_version: 1501.02887v1 · doi: 10.48550/arxiv.1501.02887 · pith_short_12: U7ZP2RMKJXSG · pith_short_16: U7ZP2RMKJXSGCXK4 · pith_short_8: U7ZP2RMK

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/U7ZP2RMKJXSGCXK4TT7QK6ICQM \
  | 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: a7f2fd458a4de4615d5c9cff057902831bc6ae05c27e6d31674a1e7da6878a26

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d1d6a3f61d3513d248a367bbb9145ab9152ee3047d48470ff6f62ec204f6713a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2015-01-11T16:53:05Z",
    "title_canon_sha256": "3840571ef35678c8e05b3fe0f0fc3532b9ace1443121826b4921e3ef92db7996"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.02887",
    "kind": "arxiv",
    "version": 1
  }
}