Pith Number

pith:PHE4RZZ6

pith:2012:PHE4RZZ62Q524BQKJFVPUMFMDD

not attested not anchored not stored refs pending

Recovering Missing Coefficients in DCT-Transformed Images

Andreas Karrenbauer, C.-C. Jay Kuo, Dietmar Saupe, Shujun Li

arxiv:1209.1673 v1 · 2012-09-07 · cs.MM · cs.CR · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PHE4RZZ62Q524BQKJFVPUMFMDD}

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	2026-05-18T03:45:54.763617Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

79c9c8e73ed43bae060a496afa30ac18cd1d38e6a55909b3dff7ee449ceb52e3

Aliases

arxiv: 1209.1673 · arxiv_version: 1209.1673v1 · doi: 10.48550/arxiv.1209.1673 · pith_short_12: PHE4RZZ62Q52 · pith_short_16: PHE4RZZ62Q524BQK · pith_short_8: PHE4RZZ6

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/PHE4RZZ62Q524BQKJFVPUMFMDD \
  | 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: 79c9c8e73ed43bae060a496afa30ac18cd1d38e6a55909b3dff7ee449ceb52e3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "70cb2c7bd64d8c8c67a7e03ae4f3dc66ec10bce2a3476cdfb99c0829fb5655fd",
    "cross_cats_sorted": [
      "cs.CR",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.MM",
    "submitted_at": "2012-09-07T23:59:01Z",
    "title_canon_sha256": "fe97e91f5ac8e7b894648b4b0362069854ce4cde6583d7cb5ceb5976a7ccaced"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.1673",
    "kind": "arxiv",
    "version": 1
  }
}