Pith Number

pith:VHHUH5FW

pith:2018:VHHUH5FWJ7CYZ5LJWH3YYHNPFD

not attested not anchored not stored refs pending

Optimal Strategies for Matching and Retrieval Problems by Comparing Covariates

Bhiksha Raj, Mahmoud Al Ismail, Rita Singh, Yandong Wen

arxiv:1807.04834 v2 · 2018-07-12 · 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{VHHUH5FWJ7CYZ5LJWH3YYHNPFD}

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	2026-05-18T00:10:44.143436Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a9cf43f4b64fc58cf569b1f78c1daf28dde1690230196c86295e9c2f51a3d62b

Aliases

arxiv: 1807.04834 · arxiv_version: 1807.04834v2 · doi: 10.48550/arxiv.1807.04834 · pith_short_12: VHHUH5FWJ7CY · pith_short_16: VHHUH5FWJ7CYZ5LJ · pith_short_8: VHHUH5FW

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/VHHUH5FWJ7CYZ5LJWH3YYHNPFD \
  | 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: a9cf43f4b64fc58cf569b1f78c1daf28dde1690230196c86295e9c2f51a3d62b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f5502cd812672ccc47c875cb9ab97fdbcbf48c2c07aeccc6e3eadef91db9e74",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2018-07-12T21:36:07Z",
    "title_canon_sha256": "84461b78720325e76aba3441cb5c59c613293bc4d60b2cf3a08c04bedf814b33"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.04834",
    "kind": "arxiv",
    "version": 2
  }
}