Pith Number

pith:SOC2VBOH

pith:2019:SOC2VBOH3XYVQDUPVFZYWNFBFU

not attested not anchored not stored refs pending

Biometric Template Storage with Blockchain: A First Look into Cost and Performance Tradeoffs

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

arxiv:1904.13128 v1 · 2019-04-30 · 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{SOC2VBOH3XYVQDUPVFZYWNFBFU}

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	2026-05-17T23:47:22.088362Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9385aa85c7ddf1580e8fa9738b34a12d376b9a46e350bbeec9ccb73f169b264f

Aliases

arxiv: 1904.13128 · arxiv_version: 1904.13128v1 · doi: 10.48550/arxiv.1904.13128 · pith_short_12: SOC2VBOH3XYV · pith_short_16: SOC2VBOH3XYVQDUP · pith_short_8: SOC2VBOH

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/SOC2VBOH3XYVQDUPVFZYWNFBFU \
  | 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: 9385aa85c7ddf1580e8fa9738b34a12d376b9a46e350bbeec9ccb73f169b264f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "71448ea35b314026c8b51544c0a30dd438872ceff014d90c74632fbca34345f1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2019-04-30T09:54:53Z",
    "title_canon_sha256": "20c03c78803405e49a1e66dc75c845ac39ba911758ed13a3049527698243200b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.13128",
    "kind": "arxiv",
    "version": 1
  }
}