Pith Number

pith:2JB4LGFF

pith:2019:2JB4LGFFY2A2SDZO6IYMTLIIPL

not attested not anchored not stored refs pending

Detection of symmetry using a crystallographic image processing algorithm

Paul Plachinda

arxiv:1908.07932 v1 · 2019-08-08 · physics.pop-ph · physics.ed-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2JB4LGFFY2A2SDZO6IYMTLIIPL}

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	2026-07-04T23:59:02.601851Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d243c598a5c681a90f2ef230c9ad087aed25825e15d69b1b8e551cffc3fc0cdc

Aliases

arxiv: 1908.07932 · arxiv_version: 1908.07932v1 · doi: 10.48550/arxiv.1908.07932 · pith_short_12: 2JB4LGFFY2A2 · pith_short_16: 2JB4LGFFY2A2SDZO · pith_short_8: 2JB4LGFF

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/2JB4LGFFY2A2SDZO6IYMTLIIPL \
  | 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: d243c598a5c681a90f2ef230c9ad087aed25825e15d69b1b8e551cffc3fc0cdc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "601acae206aa03515b173618794f1defeab9b017843509797a48b9fb5baf08ca",
    "cross_cats_sorted": [
      "physics.ed-ph"
    ],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "physics.pop-ph",
    "submitted_at": "2019-08-08T02:23:55Z",
    "title_canon_sha256": "1aa0b9558148b31372da4ddc971ef155639adf1bf67cd7951bafdccd381e8c3b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.07932",
    "kind": "arxiv",
    "version": 1
  }
}