Pith Number

pith:2LBO4KSF

pith:2018:2LBO4KSFWVCHDB3IUPS3EVFZN6

not attested not anchored not stored refs pending

Post-mortem Human Iris Recognition

Adam Czajka, Mateusz Trokielewicz, Piotr Maciejewicz

arxiv:1809.00208 v1 · 2018-09-01 · 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{2LBO4KSFWVCHDB3IUPS3EVFZN6}

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	2026-05-18T00:06:35.789174Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d2c2ee2a45b544718768a3e5b254b96fbc879ec4c3f9d4cffcc1dab25751c9c2

Aliases

arxiv: 1809.00208 · arxiv_version: 1809.00208v1 · doi: 10.48550/arxiv.1809.00208 · pith_short_12: 2LBO4KSFWVCH · pith_short_16: 2LBO4KSFWVCHDB3I · pith_short_8: 2LBO4KSF

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/2LBO4KSFWVCHDB3IUPS3EVFZN6 \
  | 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: d2c2ee2a45b544718768a3e5b254b96fbc879ec4c3f9d4cffcc1dab25751c9c2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f0b411ff955cf24f54b46f877a048cfd900d5d82037c6bc99ba117213883b10e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2018-09-01T15:24:57Z",
    "title_canon_sha256": "dfb4fd7f4ba6efaba977db6494581d745022cdb8daf6a832bd990ea08dc566eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.00208",
    "kind": "arxiv",
    "version": 1
  }
}