Pith Number

pith:4GCWBMMU

pith:2021:4GCWBMMUXJXLLHJAJC5NU42COW

not attested not anchored not stored refs pending

SDD-FIQA: Unsupervised Face Image Quality Assessment with Similarity Distribution Distance

Fu-Zhao Ou, Jilin Li, Liujuan Cao, Ruixin Zhang, Shaoxin Li, Xingyu Chen, Yong Li, Yuan-Gen Wang, Yuge Huang

arxiv:2103.05977 v1 · 2021-03-10 · 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{4GCWBMMUXJXLLHJAJC5NU42COW}

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	2026-07-05T02:22:00.307019Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e18560b194ba6eb59d2048bada73427590e48d8e84106430f022f6589fa0a0c5

Aliases

arxiv: 2103.05977 · arxiv_version: 2103.05977v1 · doi: 10.48550/arxiv.2103.05977 · pith_short_12: 4GCWBMMUXJXL · pith_short_16: 4GCWBMMUXJXLLHJA · pith_short_8: 4GCWBMMU

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/4GCWBMMUXJXLLHJAJC5NU42COW \
  | 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: e18560b194ba6eb59d2048bada73427590e48d8e84106430f022f6589fa0a0c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c369a04dc997ec025137d99b5dbe359d7c2bf307a3047f2a913405ee3996cb01",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-03-10T10:23:28Z",
    "title_canon_sha256": "2247efb34ecad5bdd7aa14ad7e99c680c586e521a73848b4482375a26222775f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.05977",
    "kind": "arxiv",
    "version": 1
  }
}