Pith Number

pith:Q2G6PF6J

pith:2012:Q2G6PF6JAXR37GTC3REMNH3PK2

not attested not anchored not stored refs pending

Examples of Artificial Perceptions in Optical Character Recognition and Iris Recognition

Alin C. Rosoiu, Claudiu G. Ghica, Cristina M. Noaica, Iulia M. Motoc, Nicolaie Popescu-Bodorin, Robert Badea

arxiv:1209.6195 v1 · 2012-09-27 · 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{Q2G6PF6JAXR37GTC3REMNH3PK2}

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	2026-05-18T03:44:35.084455Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

868de797c905e3bf9a62dc48c69f6f56b5d3aa18663004ef2d1a766f81621b4c

Aliases

arxiv: 1209.6195 · arxiv_version: 1209.6195v1 · doi: 10.48550/arxiv.1209.6195 · pith_short_12: Q2G6PF6JAXR3 · pith_short_16: Q2G6PF6JAXR37GTC · pith_short_8: Q2G6PF6J

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/Q2G6PF6JAXR37GTC3REMNH3PK2 \
  | 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: 868de797c905e3bf9a62dc48c69f6f56b5d3aa18663004ef2d1a766f81621b4c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc3d00759a6935604a96f7fc03fab8fd54a453f7f068f45c07e96ee87a95cf51",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2012-09-27T11:39:58Z",
    "title_canon_sha256": "299d214378983d0a125a12516e7200bf12f87250ad96ee4847c183f8177838dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.6195",
    "kind": "arxiv",
    "version": 1
  }
}