Pith Number

pith:DDX22ZO5

pith:2015:DDX22ZO5MUS7P3XLHR3NPQKC5Q

not attested not anchored not stored refs pending

A DCT And SVD based Watermarking Technique To Identify Tag

Ao Wang, Hui Li, JianBiao Lin, Ke Ji, Tianjing Tang

arxiv:1502.02969 v1 · 2015-02-10 · cs.MM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DDX22ZO5MUS7P3XLHR3NPQKC5Q}

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	2026-05-18T02:27:30.154772Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18efad65dd6525f7eeeb3c76d7c142ec0cb06563b97242fa014b8995621af755

Aliases

arxiv: 1502.02969 · arxiv_version: 1502.02969v1 · doi: 10.48550/arxiv.1502.02969 · pith_short_12: DDX22ZO5MUS7 · pith_short_16: DDX22ZO5MUS7P3XL · pith_short_8: DDX22ZO5

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/DDX22ZO5MUS7P3XLHR3NPQKC5Q \
  | 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: 18efad65dd6525f7eeeb3c76d7c142ec0cb06563b97242fa014b8995621af755

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4099e35245cad096f210460c777ce96c2e7a144fe81755afb86279b7245b05e2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.MM",
    "submitted_at": "2015-02-10T16:23:07Z",
    "title_canon_sha256": "2acea69b3f8877799368da9a4e1eb7eaa842536516f66549eeacf90f62d0bc2f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.02969",
    "kind": "arxiv",
    "version": 1
  }
}