Pith Number

pith:2VAEF4EN

pith:2009:2VAEF4EN5UPWYPEDKS52SI73NJ

not attested not anchored not stored refs pending

Measurement of the thorium-228 activity in solutions cavitated by ultrasonic sound

E. Vazquez-Jauregui, M. Gerbier-Violleau, R. Ford

arxiv:0911.1387 v2 · 2009-11-07 · nucl-ex

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2VAEF4EN5UPWYPEDKS52SI73NJ}

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	2026-05-18T02:10:58.446191Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d54042f08ded1f6c3c8354bba923fb6a4c6f67ccf6307a18313ead96f08b43cd

Aliases

arxiv: 0911.1387 · arxiv_version: 0911.1387v2 · doi: 10.48550/arxiv.0911.1387 · pith_short_12: 2VAEF4EN5UPW · pith_short_16: 2VAEF4EN5UPWYPED · pith_short_8: 2VAEF4EN

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/2VAEF4EN5UPWYPEDKS52SI73NJ \
  | 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: d54042f08ded1f6c3c8354bba923fb6a4c6f67ccf6307a18313ead96f08b43cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f448f6577b54300a9ac2c83d6711e4248f89ab7c915738de55fd93e0217a528a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nucl-ex",
    "submitted_at": "2009-11-07T03:04:39Z",
    "title_canon_sha256": "97504fc59e6df7ad3e99f5d16fc660ff3f78510745d78841c3e677b00aa9b9f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.1387",
    "kind": "arxiv",
    "version": 2
  }
}