Pith Number

pith:PO5BHTHT

pith:2019:PO5BHTHTFN6U2GIUOGREGS4QZO

not attested not anchored not stored refs pending

Learning-Free Iris Segmentation Revisited: A First Step Toward Fast Volumetric Operation Over Video Samples

Adam Czajka, Camila Carballo, Jeffery Kinnison, Mateusz Trokielewicz, Walter Scheirer

arxiv:1901.01575 v1 · 2019-01-06 · 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{PO5BHTHTFN6U2GIUOGREGS4QZO}

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.

Cited by

1 paper in Pith

ThirdEye: Triplet Based Iris Recognition without Normalization

Receipt and verification

First computed	2026-05-17T23:56:51.688140Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7bba13ccf32b7d4d191471a2434b90cb96bca2582b31f771008aaaf91e7dacfc

Aliases

arxiv: 1901.01575 · arxiv_version: 1901.01575v1 · doi: 10.48550/arxiv.1901.01575 · pith_short_12: PO5BHTHTFN6U · pith_short_16: PO5BHTHTFN6U2GIU · pith_short_8: PO5BHTHT

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/PO5BHTHTFN6U2GIUOGREGS4QZO \
  | 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: 7bba13ccf32b7d4d191471a2434b90cb96bca2582b31f771008aaaf91e7dacfc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da416ab46318e3ab35154ba3419f8e57a8cdd397185306bead71d39b1fe2c30d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-01-06T17:22:08Z",
    "title_canon_sha256": "e5c75b638c1ccf637e2812ff467bea65715d1eb5b9ba5e492799b1fda1b07781"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.01575",
    "kind": "arxiv",
    "version": 1
  }
}