Pith Number

pith:RCCB5PSS

pith:2019:RCCB5PSSYVOKAYSJDGQK2AY7OG

not attested not anchored not stored refs pending

Blockchain and Biometrics: A First Look into Opportunities and Challenges

Julian Fierrez, Oscar Delgado-Mohatar, Ruben Tolosana, Ruben Vera-Rodriguez

arxiv:1903.05496 v1 · 2019-03-13 · cs.CR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RCCB5PSSYVOKAYSJDGQK2AY7OG}

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	2026-05-17T23:50:48.486572Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

88841ebe52c55ca0624919a0ad031f71b8f463cc65a6601657563dcbfc472fea

Aliases

arxiv: 1903.05496 · arxiv_version: 1903.05496v1 · doi: 10.48550/arxiv.1903.05496 · pith_short_12: RCCB5PSSYVOK · pith_short_16: RCCB5PSSYVOKAYSJ · pith_short_8: RCCB5PSS

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/RCCB5PSSYVOKAYSJDGQK2AY7OG \
  | 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: 88841ebe52c55ca0624919a0ad031f71b8f463cc65a6601657563dcbfc472fea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dac310e5455e6693fb7ebe5c429ee2ed4792c60678835673693b2c5c6df9d0ae",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2019-03-13T13:58:41Z",
    "title_canon_sha256": "e1fd45604e65e2f53bb57f16a217936c16d1f7c8842f96aad9bb462d0dded2c1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.05496",
    "kind": "arxiv",
    "version": 1
  }
}