Pith Number

pith:PDHWMMY6

pith:2020:PDHWMMY62PEB6YZ5LIIMRFWA2L

not attested not anchored not stored refs pending

Feature Super-Resolution Based Facial Expression Recognition for Multi-scale Low-Resolution Faces

Feng Tian, Jizhong Zhang, Kuo-ming Chao, Wei Jing, Xu Liu, Zhenxin Hong

arxiv:2004.02234 v1 · 2020-04-05 · 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{PDHWMMY62PEB6YZ5LIIMRFWA2L}

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	2026-07-05T00:52:57.157739Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78cf66331ed3c81f633d5a10c896c0d2e3794d8ecafeb446ac439f4a351023e7

Aliases

arxiv: 2004.02234 · arxiv_version: 2004.02234v1 · doi: 10.48550/arxiv.2004.02234 · pith_short_12: PDHWMMY62PEB · pith_short_16: PDHWMMY62PEB6YZ5 · pith_short_8: PDHWMMY6

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/PDHWMMY62PEB6YZ5LIIMRFWA2L \
  | 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: 78cf66331ed3c81f633d5a10c896c0d2e3794d8ecafeb446ac439f4a351023e7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d168da50aebf9add1532b1e2b5ec2cc4e7653a7bb7a38f527c33af682691537d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2020-04-05T15:38:47Z",
    "title_canon_sha256": "08eb74432ff6d5845ddac22561fb46bea66203e8937edeffdc0fc10b51d1fbbc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.02234",
    "kind": "arxiv",
    "version": 1
  }
}