Pith Number

pith:VJUIGVXT

pith:2021:VJUIGVXTKNXJPVTKS7KWQYO5ZQ

not attested not anchored not stored refs pending

Ambiguity of Objective Image Quality Metrics: A New Methodology for Performance Evaluation

Jong-Seok Lee, Junghyuk Lee, Luk\'a\v{s} Krasula, Manri Cheon, Patrick Le Callet, Toinon Vigier

arxiv:2101.07439 v1 · 2021-01-19 · cs.MM · 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{VJUIGVXTKNXJPVTKS7KWQYO5ZQ}

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	2026-07-05T02:08:33.502311Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aa688356f3536e97d66a97d56861ddcc1f304a1158fb86e99a120b20a3528382

Aliases

arxiv: 2101.07439 · arxiv_version: 2101.07439v1 · doi: 10.48550/arxiv.2101.07439 · pith_short_12: VJUIGVXTKNXJ · pith_short_16: VJUIGVXTKNXJPVTK · pith_short_8: VJUIGVXT

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/VJUIGVXTKNXJPVTKS7KWQYO5ZQ \
  | 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: aa688356f3536e97d66a97d56861ddcc1f304a1158fb86e99a120b20a3528382

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8fb5cf7e9e08568a1e4d804fa8994fe1aa1535c581ea41d26c49471aa59373f3",
    "cross_cats_sorted": [
      "eess.IV"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "cs.MM",
    "submitted_at": "2021-01-19T03:13:25Z",
    "title_canon_sha256": "6700c74e9f9096d042806744c22de785f3b9c85dc62d348bd1ba6cd6b4aa2009"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.07439",
    "kind": "arxiv",
    "version": 1
  }
}