Pith Number

pith:M2ISIQSX

pith:2009:M2ISIQSXTEARRWCBMMJWOYA5GM

not attested not anchored not stored refs pending

Pigment Melanin: Pattern for Iris Recognition

Babak N. Araabi, Hamid Soltanian-Zadeh, Mahdi S. Hosseini

arxiv:0911.5462 v1 · 2009-11-29 · 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{M2ISIQSXTEARRWCBMMJWOYA5GM}

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	2026-05-18T00:58:19.866517Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6691244257990118d841631367601d331e9cd426b0b59c844c66bb9279e868ae

Aliases

arxiv: 0911.5462 · arxiv_version: 0911.5462v1 · doi: 10.48550/arxiv.0911.5462 · pith_short_12: M2ISIQSXTEAR · pith_short_16: M2ISIQSXTEARRWCB · pith_short_8: M2ISIQSX

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/M2ISIQSXTEARRWCBMMJWOYA5GM \
  | 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: 6691244257990118d841631367601d331e9cd426b0b59c844c66bb9279e868ae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0a9cace81c8a4e8f723f4432e4a6b94c395062cd983e8a355dc423a3db03bc44",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2009-11-29T07:07:54Z",
    "title_canon_sha256": "11cc67ac06bef317eb17534692fe1886da18e9d7041b9b50c3544e00553de5b9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.5462",
    "kind": "arxiv",
    "version": 1
  }
}