Pith Number

pith:C34UTK3U

pith:2012:C34UTK3ULIKR5LF3EOE6IAIJAJ

not attested not anchored not stored refs pending

Performance Evaluation of Spread Spectrum Watermarking using Error Control Coding

S. K. Sarkar, T. S. Das, V. H. Mankar

arxiv:1207.2687 v1 · 2012-07-11 · 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{C34UTK3ULIKR5LF3EOE6IAIJAJ}

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	2026-05-18T03:51:14.814912Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

16f949ab745a151eacbb2389e4010902633cf2dc3dd604a239f301c269f5e366

Aliases

arxiv: 1207.2687 · arxiv_version: 1207.2687v1 · doi: 10.48550/arxiv.1207.2687 · pith_short_12: C34UTK3ULIKR · pith_short_16: C34UTK3ULIKR5LF3 · pith_short_8: C34UTK3U

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/C34UTK3ULIKR5LF3EOE6IAIJAJ \
  | 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: 16f949ab745a151eacbb2389e4010902633cf2dc3dd604a239f301c269f5e366

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "381a00130ef4603aa767f432c8212df897455b85ab69c972f3f1dbb54252bd64",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2012-07-11T16:02:02Z",
    "title_canon_sha256": "a87c20a65761e32b0c833c9dc3749540a45625bf31970649ab302f78aab585e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.2687",
    "kind": "arxiv",
    "version": 1
  }
}