Pith Number

pith:GJ7WE5GO

pith:2014:GJ7WE5GOIPZUB4ETVETTW2Y2YX

not attested not anchored not stored refs pending

An Estimation Method of Measuring Image Quality for Compressed Images of Human Face

Abhishek Bhattacharya, Tanusree Chatterjee

arxiv:1402.1331 v1 · 2014-02-06 · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GJ7WE5GOIPZUB4ETVETTW2Y2YX}

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	2026-05-18T02:59:59.392620Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

327f6274ce43f340f093a9273b6b1ac5c590ed2df94d38a0a55a27f65e822aba

Aliases

arxiv: 1402.1331 · arxiv_version: 1402.1331v1 · doi: 10.48550/arxiv.1402.1331 · pith_short_12: GJ7WE5GOIPZU · pith_short_16: GJ7WE5GOIPZUB4ET · pith_short_8: GJ7WE5GO

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/GJ7WE5GOIPZUB4ETVETTW2Y2YX \
  | 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: 327f6274ce43f340f093a9273b6b1ac5c590ed2df94d38a0a55a27f65e822aba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f19c5d562b768190395d34ca654d170beb31d072305da8e15630f0c7ec1614f4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2014-02-06T11:58:42Z",
    "title_canon_sha256": "453097193ddc548c4e28ace7769d0feff2d2ecd8e7fcb6f8ac15029d66434398"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.1331",
    "kind": "arxiv",
    "version": 1
  }
}