Pith Number

pith:UD7XU3BG

pith:2012:UD7XU3BGCNTZ2SIMPFYZE7VDPJ

not attested not anchored not stored refs pending

Combined Haar-Hilbert and Log-Gabor Based Iris Encoders

Alina Barbulescu, Iulia M. Motoc, Valentina E. Balas

arxiv:1202.1685 v1 · 2012-02-08 · 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{UD7XU3BGCNTZ2SIMPFYZE7VDPJ}

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	2026-05-18T04:02:51.453093Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a0ff7a6c2613679d490c7971927ea37a58c267e4ecac826ba39f9885677dba15

Aliases

arxiv: 1202.1685 · arxiv_version: 1202.1685v1 · doi: 10.48550/arxiv.1202.1685 · pith_short_12: UD7XU3BGCNTZ · pith_short_16: UD7XU3BGCNTZ2SIM · pith_short_8: UD7XU3BG

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/UD7XU3BGCNTZ2SIMPFYZE7VDPJ \
  | 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: a0ff7a6c2613679d490c7971927ea37a58c267e4ecac826ba39f9885677dba15

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c3e1ff480730ad8496343270f7729d7529027628f3accc4396e6274ad501f5fc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2012-02-08T13:07:10Z",
    "title_canon_sha256": "6a86f7b30267a27bc6559afb7b3ee9975dd30ff2473940e5afba26bafe2e1a3d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.1685",
    "kind": "arxiv",
    "version": 1
  }
}