Pith Number

pith:NON4HLVZ

pith:2026:NON4HLVZBZWY2VYYA3MDJWXGE5

not attested not anchored not stored refs pending

Semantic Hardness Is Not Visual Hardness: Sign-Aware Hard Negative Mining for Sign Language Retrieval

Changsu Choi, Chan Hur, Eui Jun Hwang, Fitsum Gaim, Hoyun Song, Junmyeong Lee, KyungTae Lim, Sukmin Cho

arxiv:2607.09263 v1 · 2026-07-10 · 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{NON4HLVZBZWY2VYYA3MDJWXGE5}

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	2026-07-13T01:18:56.776522Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b9bc3aeb90e6d8d571806d834dae6275d709b9d1470db0a239184247670c4ee

Aliases

arxiv: 2607.09263 · arxiv_version: 2607.09263v1 · doi: 10.48550/arxiv.2607.09263 · pith_short_12: NON4HLVZBZWY · pith_short_16: NON4HLVZBZWY2VYY · pith_short_8: NON4HLVZ

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/NON4HLVZBZWY2VYYA3MDJWXGE5 \
  | 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: 6b9bc3aeb90e6d8d571806d834dae6275d709b9d1470db0a239184247670c4ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed7a0edf6467f0c9aa62fa3fddca54aaea26363a5c7aea7d5cb5c3350503f6bd",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2026-07-10T10:26:38Z",
    "title_canon_sha256": "6f3a6e636b9731331e1fbeb69d7756fe69d1eb59f1c930b681d5e5ad426f3288"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.09263",
    "kind": "arxiv",
    "version": 1
  }
}