Pith Number

pith:3KEJ25LT

pith:2021:3KEJ25LTNFOVPMWWOFIDBOLPHP

not attested not anchored not stored refs pending

Improving Face Recognition with Large Age Gaps by Learning to Distinguish Children

Jaegul Choo, Jooyeol Yun, Jungsoo Lee, Sunghyun Park, Yonggyu Kim

arxiv:2110.11630 v1 · 2021-10-22 · 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{3KEJ25LTNFOVPMWWOFIDBOLPHP}

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	2026-07-05T03:24:49.699881Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

da889d7573695d57b2d6715030b96f3bcc41b4c2b1860d6b18437e805dcf25f7

Aliases

arxiv: 2110.11630 · arxiv_version: 2110.11630v1 · doi: 10.48550/arxiv.2110.11630 · pith_short_12: 3KEJ25LTNFOV · pith_short_16: 3KEJ25LTNFOVPMWW · pith_short_8: 3KEJ25LT

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/3KEJ25LTNFOVPMWWOFIDBOLPHP \
  | 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: da889d7573695d57b2d6715030b96f3bcc41b4c2b1860d6b18437e805dcf25f7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "332dfbaf6fb48f35d7098e45c0b2240dc8ad3450c203a2190526d8c94ca8c78e",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-10-22T07:31:14Z",
    "title_canon_sha256": "78816d6f5c0441b9fcc40531c836fa29a080a87cb592b73fee8e388bc9626b42"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2110.11630",
    "kind": "arxiv",
    "version": 1
  }
}