Pith Number

pith:6J5JI5ED

pith:2021:6J5JI5EDSYFFKEWGW4JHMRP2R6

not attested not anchored not stored refs pending

SphereFace2: Binary Classification is All You Need for Deep Face Recognition

Adrian Weller, Bhiksha Raj, Rita Singh, Weiyang Liu, Yandong Wen

arxiv:2108.01513 v3 · 2021-08-03 · cs.CV · cs.AI · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6J5JI5EDSYFFKEWGW4JHMRP2R6}

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.

Cited by

1 paper in Pith

LVFace: Progressive Cluster Optimization for Large Vision Models in Face Recognition

Receipt and verification

First computed	2026-07-05T04:12:50.200242Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f27a947483960a5512c6b7127645fa8f94ec5dd87aa3e23f1f5040a7ab12ca5a

Aliases

arxiv: 2108.01513 · arxiv_version: 2108.01513v3 · doi: 10.48550/arxiv.2108.01513 · pith_short_12: 6J5JI5EDSYFF · pith_short_16: 6J5JI5EDSYFFKEWG · pith_short_8: 6J5JI5ED

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/6J5JI5EDSYFFKEWGW4JHMRP2R6 \
  | 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: f27a947483960a5512c6b7127645fa8f94ec5dd87aa3e23f1f5040a7ab12ca5a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ecc22dd0dbd3b4d87f679339902d32bcb009a147d5ae81058f53596275a442c7",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-08-03T13:58:45Z",
    "title_canon_sha256": "73a24cfb4e2f5766f7553b836cf9fea4c77a5cfeae0098691910c229d4a227e1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.01513",
    "kind": "arxiv",
    "version": 3
  }
}