Pith Number

pith:UMQJ2M3Y

pith:2012:UMQJ2M3YLVXZNZZL4E5K3NQTJV

not attested not anchored not stored refs pending

Machine Recognition of Hand Written Characters using Neural Networks

Ashish Chaturvedi, Yusuf Perwej

arxiv:1205.3964 v1 · 2012-05-17 · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UMQJ2M3YLVXZNZZL4E5K3NQTJV}

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	2026-05-18T03:55:24.111805Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3209d33785d6f96e72be13aadb6134d452f3813130f7f64c70755db8c24dfce

Aliases

arxiv: 1205.3964 · arxiv_version: 1205.3964v1 · doi: 10.48550/arxiv.1205.3964 · pith_short_12: UMQJ2M3YLVXZ · pith_short_16: UMQJ2M3YLVXZNZZL · pith_short_8: UMQJ2M3Y

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/UMQJ2M3YLVXZNZZL4E5K3NQTJV \
  | 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: a3209d33785d6f96e72be13aadb6134d452f3813130f7f64c70755db8c24dfce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "defe330869f35891496287334de7670335723565e0d6f60682dfe0a003d7c3c4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2012-05-17T15:50:08Z",
    "title_canon_sha256": "fd45c8e7b8b0a430c198eb9d8d5b85a8dd2b84b86d2695f4ccabbc916498d875"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.3964",
    "kind": "arxiv",
    "version": 1
  }
}