Pith Number

pith:7DBOBQQV

pith:2012:7DBOBQQV6CB3NBIOHXWT7CRE56

not attested not anchored not stored refs pending

A sensitive cloud chamber without radioactive sources

Akio Itoh, Ayu Oyama, Haruka Takahashi, Syoji Zeze

arxiv:1202.2423 v2 · 2012-02-11 · physics.pop-ph · physics.ed-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{7DBOBQQV6CB3NBIOHXWT7CRE56}

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	2026-05-18T01:58:31.036344Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8c2e0c215f083b6850e3ded3f8a24efb84ce4e6f858c4477ed45cf7383bca66

Aliases

arxiv: 1202.2423 · arxiv_version: 1202.2423v2 · doi: 10.48550/arxiv.1202.2423 · pith_short_12: 7DBOBQQV6CB3 · pith_short_16: 7DBOBQQV6CB3NBIO · pith_short_8: 7DBOBQQV

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/7DBOBQQV6CB3NBIOHXWT7CRE56 \
  | 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: f8c2e0c215f083b6850e3ded3f8a24efb84ce4e6f858c4477ed45cf7383bca66

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "784ed9f6ba99115229ee5fd78ef43db2b45e0a0fce189a6ae461b61280b767f7",
    "cross_cats_sorted": [
      "physics.ed-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.pop-ph",
    "submitted_at": "2012-02-11T09:17:38Z",
    "title_canon_sha256": "d18523094484582ec24e04e7c9af1a2728a6db785dac4de4c77692f38e883690"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.2423",
    "kind": "arxiv",
    "version": 2
  }
}