Pith Number

pith:3XW3DVYQ

pith:2013:3XW3DVYQIPHOA552GHUNZPKO3S

not attested not anchored not stored refs pending

Face Recognition using Hough Peaks extracted from the significant blocks of the Gradient Image

Arindam Kar, Debotosh Bhattacharjee, Dipak Kumar Basu, Mahantapas Kundu, Mita Nasipuri

arxiv:1312.1683 v1 · 2013-12-05 · 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{3XW3DVYQIPHOA552GHUNZPKO3S}

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	2026-05-18T03:05:19.983213Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ddedb1d71043cee077ba31e8dcbd4edc8e714e5ca945f9f2750e5b0fdc9c51f0

Aliases

arxiv: 1312.1683 · arxiv_version: 1312.1683v1 · doi: 10.48550/arxiv.1312.1683 · pith_short_12: 3XW3DVYQIPHO · pith_short_16: 3XW3DVYQIPHOA552 · pith_short_8: 3XW3DVYQ

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/3XW3DVYQIPHOA552GHUNZPKO3S \
  | 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: ddedb1d71043cee077ba31e8dcbd4edc8e714e5ca945f9f2750e5b0fdc9c51f0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "04b987a7a879922b8a569bb75d2fada3f762403506ae3444cf7a3dc437916b8a",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/publicdomain/",
    "primary_cat": "cs.CV",
    "submitted_at": "2013-12-05T12:09:48Z",
    "title_canon_sha256": "c3c8ea55f01ac4da4cc98f35ec423a76e633a483c5e18b2a70dd4fe60404ea81"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.1683",
    "kind": "arxiv",
    "version": 1
  }
}