Pith Number

pith:4ADALSLS

pith:2010:4ADALSLS7ZVDAU3FTKOTJ424VG

not attested not anchored not stored refs pending

Negative Databases for Biometric Data

Herv\'e Chabanne, Julien Bringer

arxiv:1005.1194 v2 · 2010-05-07 · 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{4ADALSLS7ZVDAU3FTKOTJ424VG}

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	2026-05-18T02:24:08.753297Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e00605c972fe6a3053659a9d34f35ca9824f2db41bebe4823375432829e5faf5

Aliases

arxiv: 1005.1194 · arxiv_version: 1005.1194v2 · doi: 10.48550/arxiv.1005.1194 · pith_short_12: 4ADALSLS7ZVD · pith_short_16: 4ADALSLS7ZVDAU3F · pith_short_8: 4ADALSLS

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/4ADALSLS7ZVDAU3FTKOTJ424VG \
  | 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: e00605c972fe6a3053659a9d34f35ca9824f2db41bebe4823375432829e5faf5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3d6c049922177c69ae3ffcfc677a69147917396d0b83492cf163f0dab793e58d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2010-05-07T12:29:01Z",
    "title_canon_sha256": "66a95a61f6fb42fa00b008d34821928fe198d0581fb58a279d9301cc209f5a65"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1005.1194",
    "kind": "arxiv",
    "version": 2
  }
}