Pith Number

pith:S2X5WKCZ

pith:2019:S2X5WKCZHCQ52PZR4B6QXTAV7P

not attested not anchored not stored refs pending

Privacy Preserving Group Membership Verification and Identification

Laurent Amsaleg, Marzieh Gheisari, Teddy Furon

arxiv:1904.10327 v1 · 2019-04-23 · 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{S2X5WKCZHCQ52PZR4B6QXTAV7P}

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	2026-05-17T23:47:54.428474Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

96afdb285938a1dd3f31e07d0bcc15fbe6ed3f81aa4e817dcca6f326eaa0c301

Aliases

arxiv: 1904.10327 · arxiv_version: 1904.10327v1 · doi: 10.48550/arxiv.1904.10327 · pith_short_12: S2X5WKCZHCQ5 · pith_short_16: S2X5WKCZHCQ52PZR · pith_short_8: S2X5WKCZ

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/S2X5WKCZHCQ52PZR4B6QXTAV7P \
  | 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: 96afdb285938a1dd3f31e07d0bcc15fbe6ed3f81aa4e817dcca6f326eaa0c301

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9113b61e420f75c2aca4351a1715eb322d3a9040355e589ad29defafc5b473f1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-04-23T13:41:14Z",
    "title_canon_sha256": "7260622a49836ab217667d53e0c2bf9649aaf24fe17400d0b09fc5b3021b227d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.10327",
    "kind": "arxiv",
    "version": 1
  }
}