Pith Number

pith:REU3YWTA

pith:2012:REU3YWTADB2HPLIMBQ767V5EDW

not attested not anchored not stored refs pending

225-Ac and 223-Ra Production via 800 MeV Proton Irradiation of Natural Thorium Target

A. Couture, B. Ballard, E. R. Birnbaum, F. M. Hemez, F. M. Nortier, G. S. Goff, J. L. Ullmann, J. W. Weidner, K. D. John, L. E. Wolfsberg, L. J. Bitteker, M. E. Fassbender, R. Gritzo, S. G. Mashnik, W. Runde

arxiv:1204.2299 v1 · 2012-04-10 · 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{REU3YWTADB2HPLIMBQ767V5EDW}

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	2026-05-18T03:58:12.189355Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8929bc5a60187477ad0c0c3fefd7a41da08310f3228ab449c8aca7978570a402

Aliases

arxiv: 1204.2299 · arxiv_version: 1204.2299v1 · doi: 10.48550/arxiv.1204.2299 · pith_short_12: REU3YWTADB2H · pith_short_16: REU3YWTADB2HPLIM · pith_short_8: REU3YWTA

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/REU3YWTADB2HPLIMBQ767V5EDW \
  | 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: 8929bc5a60187477ad0c0c3fefd7a41da08310f3228ab449c8aca7978570a402

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "122523da668ac4a2d3817ca4528dec31f3cff9afd8135fcbba54620094a3659d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nucl-ex",
    "submitted_at": "2012-04-10T22:52:27Z",
    "title_canon_sha256": "63b9870f29da29a990683249983ce829412b38ad079f3232d55921dda5cea27a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.2299",
    "kind": "arxiv",
    "version": 1
  }
}