Pith Number

pith:U2QMDIR4

pith:2019:U2QMDIR4YPZIYYS2UZA2TVPN7S

not attested not anchored not stored refs pending

Primary quantization matrix estimation of double compressed JPEG images via CNN

Benedetta Tondi, Mauro Barni, Yakun Niu, Yao Zhao

arxiv:1908.04259 v1 · 2019-08-09 · eess.IV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U2QMDIR4YPZIYYS2UZA2TVPN7S}

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	2026-07-04T23:53:21.788748Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a6a0c1a23cc3f28c625aa641a9d5edfc837534f90864f6d16bb3323331e43242

Aliases

arxiv: 1908.04259 · arxiv_version: 1908.04259v1 · doi: 10.48550/arxiv.1908.04259 · pith_short_12: U2QMDIR4YPZI · pith_short_16: U2QMDIR4YPZIYYS2 · pith_short_8: U2QMDIR4

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/U2QMDIR4YPZIYYS2UZA2TVPN7S \
  | 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: a6a0c1a23cc3f28c625aa641a9d5edfc837534f90864f6d16bb3323331e43242

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9497ff29a3c4e2da257f0f41b9567e38da642049f70484dd0bb3ae4939affe3d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.IV",
    "submitted_at": "2019-08-09T17:47:19Z",
    "title_canon_sha256": "c202367bc2d5dc27dc7c6473ee190b438926a74251015a75b95da5c5f17d8c1f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.04259",
    "kind": "arxiv",
    "version": 1
  }
}