Pith Number

pith:2S2GEKUL

pith:2019:2S2GEKULJ2HGMCP5PY6G54BWPY

not attested not anchored not stored refs pending

Self-reinforcing Unsupervised Matching

Changshui Zhang, Jiang Lu, Lei Li

arxiv:1909.04138 v1 · 2019-08-23 · 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{2S2GEKULJ2HGMCP5PY6G54BWPY}

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	2026-07-05T05:45:22.152703Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d4b4622a8b4e8e6609fd7e3c6ef0367e2c50bd53d7209cd67294ace1a93119c1

Aliases

arxiv: 1909.04138 · arxiv_version: 1909.04138v1 · doi: 10.48550/arxiv.1909.04138 · pith_short_12: 2S2GEKULJ2HG · pith_short_16: 2S2GEKULJ2HGMCP5 · pith_short_8: 2S2GEKUL

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/2S2GEKULJ2HGMCP5PY6G54BWPY \
  | 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: d4b4622a8b4e8e6609fd7e3c6ef0367e2c50bd53d7209cd67294ace1a93119c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d2f63094f76d2160c56a233a26ff66f19d2bbee68ece21c9af4bc7810902139a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-08-23T10:43:43Z",
    "title_canon_sha256": "71287e28b978a92642e4e5fb273bd34113e89c91f8ed349e3d8db3192f33cecf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.04138",
    "kind": "arxiv",
    "version": 1
  }
}