Pith Number

pith:K2B2X7EG

pith:2011:K2B2X7EGI4KTMFJTDJXOBDZQO5

not attested not anchored not stored refs pending

Optimal symmetric Tardos traitor tracing schemes

Benne de Weger, Thijs Laarhoven

arxiv:1107.3441 v2 · 2011-07-18 · 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{K2B2X7EGI4KTMFJTDJXOBDZQO5}

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	2026-05-18T02:55:18.828982Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5683abfc8647153615331a6ee08f307747ec306daf625a38b4aa409c070266e0

Aliases

arxiv: 1107.3441 · arxiv_version: 1107.3441v2 · doi: 10.48550/arxiv.1107.3441 · pith_short_12: K2B2X7EGI4KT · pith_short_16: K2B2X7EGI4KTMFJT · pith_short_8: K2B2X7EG

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/K2B2X7EGI4KTMFJTDJXOBDZQO5 \
  | 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: 5683abfc8647153615331a6ee08f307747ec306daf625a38b4aa409c070266e0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bcbd42c4ff2e622f508d622d936094017e5a3df66a9190df8253bff53d922257",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2011-07-18T14:07:06Z",
    "title_canon_sha256": "046ce58dfe565b1f85bf0c7ee6458057b829aab9e908781c38fa15a67116e4bf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.3441",
    "kind": "arxiv",
    "version": 2
  }
}