Pith Number

pith:NINJIZW2

pith:2021:NINJIZW22KENFM537N4SKWSURK

not attested not anchored not stored refs pending

Unsupervised Statistical Learning for Die Analysis in Ancient Numismatics

Abhinav Natarajan, Andreas Heinecke, Emanuel Mayer, Yoonju Jung

arxiv:2112.00290 v1 · 2021-12-01 · 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{NINJIZW22KENFM537N4SKWSURK}

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

A High-Accuracy SSIM-based Scoring System for Coin Die Link Identification

Receipt and verification

First computed	2026-07-05T03:36:44.720075Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a1a9466dad288d2b3bbfb79255a548ab481be7f234fc133dc348ad8bfb1f0ac

Aliases

arxiv: 2112.00290 · arxiv_version: 2112.00290v1 · doi: 10.48550/arxiv.2112.00290 · pith_short_12: NINJIZW22KEN · pith_short_16: NINJIZW22KENFM53 · pith_short_8: NINJIZW2

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/NINJIZW22KENFM537N4SKWSURK \
  | 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: 6a1a9466dad288d2b3bbfb79255a548ab481be7f234fc133dc348ad8bfb1f0ac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a3e368f6357b5f00685d35531440a5dbbb3bd5c1edbbc3d4d2e6388d55cc05ed",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-12-01T06:02:07Z",
    "title_canon_sha256": "644a1829d242da9ffcbf5d80f31a3fe9f4a9181b8f7e917823db191de08e0344"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.00290",
    "kind": "arxiv",
    "version": 1
  }
}