Pith Number

pith:NNAHH5XE

pith:2018:NNAHH5XEIFA4UIWEBCLETSNOWZ

not attested not anchored not stored refs pending

Clustering via Boundary Erosion

Cheng-Hao Deng, Wan-Lei Zhao

arxiv:1804.04312 v2 · 2018-04-12 · 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{NNAHH5XEIFA4UIWEBCLETSNOWZ}

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	2026-05-18T00:18:35.401889Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b4073f6e44141ca22c4089649c9aeb6748b115c9af0923b1ad208613b873038

Aliases

arxiv: 1804.04312 · arxiv_version: 1804.04312v2 · doi: 10.48550/arxiv.1804.04312 · pith_short_12: NNAHH5XEIFA4 · pith_short_16: NNAHH5XEIFA4UIWE · pith_short_8: NNAHH5XE

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/NNAHH5XEIFA4UIWEBCLETSNOWZ \
  | 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: 6b4073f6e44141ca22c4089649c9aeb6748b115c9af0923b1ad208613b873038

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f60fe25a77b2841176af67b4ec5e213e3ade4d9a0cc08f88a9b1b010556bdcd5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2018-04-12T04:39:04Z",
    "title_canon_sha256": "7380a1d90d89282ee409c856ad0c45bda6efc1f237109217063a7699a5958cd3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.04312",
    "kind": "arxiv",
    "version": 2
  }
}