Pith Number

pith:MPC2HQRT

pith:2010:MPC2HQRTP6J2LE2UP5HXGZWUCW

not attested not anchored not stored refs pending

A snapshot from the history of cosmic ray research: a Japanese scientist view

Yasushi Muraki

arxiv:1012.1492 v1 · 2010-12-07 · physics.hist-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{MPC2HQRTP6J2LE2UP5HXGZWUCW}

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	2026-05-18T02:04:32.147382Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

63c5a3c2337f93a593547f4f7366d415ade959220999eadf46be8f603e97cd50

Aliases

arxiv: 1012.1492 · arxiv_version: 1012.1492v1 · doi: 10.48550/arxiv.1012.1492 · pith_short_12: MPC2HQRTP6J2 · pith_short_16: MPC2HQRTP6J2LE2U · pith_short_8: MPC2HQRT

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/MPC2HQRTP6J2LE2UP5HXGZWUCW \
  | 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: 63c5a3c2337f93a593547f4f7366d415ade959220999eadf46be8f603e97cd50

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e9f122028017a5468a91c4412de3fe51dcfe5258cfc7af03a2ca27bc0da5a79d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2010-12-07T12:52:33Z",
    "title_canon_sha256": "de03a59911ec3f127fea8e44188cb7995ffc5aee302168700e18a9a9f7922c67"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1012.1492",
    "kind": "arxiv",
    "version": 1
  }
}