Pith Number

pith:YSNI3HX4

pith:2021:YSNI3HX4A2QICJJH2ZTCBK2NI7

not attested not anchored not stored refs pending

Measurement of Ac227 Impurity in Ac225 using Decay Energy Spectroscopy

Aidan D. Tollefson, Benjamin W. Stein, Chandler M. Smith, Daniel R. Schmidt, David J. Mercer, Ellen M. O'Brien, Joel N. Ullom, Katrina E. Koehler, Laura M. Lilley, Mark P. Croce, Matthew H. Carpenter, Michael D. Yoho, Michael E. Fassbender

arxiv:2102.02813 v1 · 2021-02-04 · physics.ins-det · nucl-ex · physics.med-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{YSNI3HX4A2QICJJH2ZTCBK2NI7}

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	2026-07-05T02:12:54.310799Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c49a8d9efc06a0812527d66620ab4d47ed65b410f473111057c4707366b3201a

Aliases

arxiv: 2102.02813 · arxiv_version: 2102.02813v1 · doi: 10.48550/arxiv.2102.02813 · pith_short_12: YSNI3HX4A2QI · pith_short_16: YSNI3HX4A2QICJJH · pith_short_8: YSNI3HX4

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/YSNI3HX4A2QICJJH2ZTCBK2NI7 \
  | 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: c49a8d9efc06a0812527d66620ab4d47ed65b410f473111057c4707366b3201a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4264319e20bd202b6e5f3e58b1832502807fbdc50d415ea841e7f0e6a55bb3ac",
    "cross_cats_sorted": [
      "nucl-ex",
      "physics.med-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.ins-det",
    "submitted_at": "2021-02-04T00:21:51Z",
    "title_canon_sha256": "22c3661e6cca856144a008be086302c5f087b4ef1122d0a00608000485d85fd5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.02813",
    "kind": "arxiv",
    "version": 1
  }
}