Pith Number

pith:GK2BBGDF

pith:2019:GK2BBGDFU642ISJSE5YQDIXJGC

not attested not anchored not stored refs pending

Properties of the Center of Gravity as an Algorithm for Position Measurements

Gregorio Landi

arxiv:1908.04447 v1 · 2019-08-13 · physics.ins-det

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GK2BBGDFU642ISJSE5YQDIXJGC}

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	2026-07-04T23:55:13.871463Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

32b4109865a7b9a44932277101a2e930a7c6a4a6ea4811721d84b7b7465e054e

Aliases

arxiv: 1908.04447 · arxiv_version: 1908.04447v1 · doi: 10.48550/arxiv.1908.04447 · pith_short_12: GK2BBGDFU642 · pith_short_16: GK2BBGDFU642ISJS · pith_short_8: GK2BBGDF

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/GK2BBGDFU642ISJSE5YQDIXJGC \
  | 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: 32b4109865a7b9a44932277101a2e930a7c6a4a6ea4811721d84b7b7465e054e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "42f2a43a8e79e8a2f57f30b23f9edbe7c9e99d9f518c0cdcef93c2f1220b2b5b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ins-det",
    "submitted_at": "2019-08-13T00:54:54Z",
    "title_canon_sha256": "56757a2d29898a4b1d7eb1af17d52ea25316097a1f62e7707a8754a21b83e075"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.04447",
    "kind": "arxiv",
    "version": 1
  }
}