Pith Number

pith:PYLG2EOL

pith:2012:PYLG2EOLUD2HEMXGWQDYA5NNGK

not attested not anchored not stored refs pending

Robust Head Pose Estimation Using Contourlet Transform

Hashem Kalbkhani, Mahrokh G. Shayesteh, Mehdi Ghasemzadeh, Mohammad Tofighi

arxiv:1204.5431 v2 · 2012-04-24 · 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{PYLG2EOLUD2HEMXGWQDYA5NNGK}

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	2026-05-18T03:55:46.279987Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e166d11cba0f47232e6b4078075ad3290c6effa7d1c5446135262df812067b1

Aliases

arxiv: 1204.5431 · arxiv_version: 1204.5431v2 · doi: 10.48550/arxiv.1204.5431 · pith_short_12: PYLG2EOLUD2H · pith_short_16: PYLG2EOLUD2HEMXG · pith_short_8: PYLG2EOL

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/PYLG2EOLUD2HEMXGWQDYA5NNGK \
  | 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: 7e166d11cba0f47232e6b4078075ad3290c6effa7d1c5446135262df812067b1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "020f401a0a5a517b4840d3f224fba9334edccb407aae4b3e1cc7c5b8398929e7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2012-04-24T17:08:04Z",
    "title_canon_sha256": "339040d6938189109b033a2bb19f0646f1cc318e8c31f12edba6376bd3cb2c12"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.5431",
    "kind": "arxiv",
    "version": 2
  }
}