Pith Number

pith:EXF652OX

pith:2011:EXF652OX3RUIO32LE4UUA6MW6J

not attested not anchored not stored refs pending

Measurement of airborne radioactivity from the Fukushima reactor accident in Tokushima, Japan

K. Fushimi, M. Sakama, S. Nakayama, Y. Sakaguchi

arxiv:1104.3611 v5 · 2011-04-19 · 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{EXF652OX3RUIO32LE4UUA6MW6J}

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	2026-05-18T03:42:46.302124Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25cbeee9d7dc68876f4b2729407996f267a213f9156dd6409d053c3942dd8d73

Aliases

arxiv: 1104.3611 · arxiv_version: 1104.3611v5 · doi: 10.48550/arxiv.1104.3611 · pith_short_12: EXF652OX3RUI · pith_short_16: EXF652OX3RUIO32L · pith_short_8: EXF652OX

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/EXF652OX3RUIO32LE4UUA6MW6J \
  | 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: 25cbeee9d7dc68876f4b2729407996f267a213f9156dd6409d053c3942dd8d73

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "59b2539b664e0bd5102d3c8f689b24150cff5718a5221411286a7654d026c090",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nucl-ex",
    "submitted_at": "2011-04-19T00:46:18Z",
    "title_canon_sha256": "52f00ccf605989496c869445eb4348ea8900735551d4866d4a9a5f6f01089463"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.3611",
    "kind": "arxiv",
    "version": 5
  }
}