Pith Number

pith:7VD6UZ54

pith:2009:7VD6UZ54ISHTGAMP7B2THNQ7EO

not attested not anchored not stored refs pending

Comment on "New Results on Frame-Proof Codes and Traceability Schemes"

Jacob Lofvenberg, Jan-{\AA}ke Larsson

arxiv:0912.1440 v1 · 2009-12-08 · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7VD6UZ54ISHTGAMP7B2THNQ7EO}

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	2026-07-05T04:05:08.703336Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd47ea67bc448f33018ff87533b61f23bf310cad066e1434d29d5d1dd60d380f

Aliases

arxiv: 0912.1440 · arxiv_version: 0912.1440v1 · doi: 10.48550/arxiv.0912.1440 · pith_short_12: 7VD6UZ54ISHT · pith_short_16: 7VD6UZ54ISHTGAMP · pith_short_8: 7VD6UZ54

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/7VD6UZ54ISHTGAMP7B2THNQ7EO \
  | 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: fd47ea67bc448f33018ff87533b61f23bf310cad066e1434d29d5d1dd60d380f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "36c484d58874cc5412a06df308d7d56e81ff1311a94a0c92e4ec4d2b09b49ce6",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2009-12-08T09:19:38Z",
    "title_canon_sha256": "a35fbb44ac8e7b61d37671907a57c12c5226032964a146edda4aba7db60dc02f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.1440",
    "kind": "arxiv",
    "version": 1
  }
}