Pith Number

pith:S7EHM3BZ

pith:2018:S7EHM3BZRNNSFZLGAIIR2A4K4I

not attested not anchored not stored refs pending

Constraints on exotic spin-dependent interactions between matter and antimatter from antiprotonic helium spectroscopy

Derek F. Jackson Kimball, Dmitry Budker, Filip Ficek, MiKhail G. Kozlov, Pavel Fadeev, Victor V. Flambaum, Yevgeny V. Stadnik

arxiv:1801.00491 v1 · 2018-01-01 · physics.atom-ph

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{S7EHM3BZRNNSFZLGAIIR2A4K4I}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:16:27.443284Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

97c8766c398b5b22e56602111d038ae2228c8288f1bd115516b460150367c3e4

Aliases

arxiv: 1801.00491 · arxiv_version: 1801.00491v1 · doi: 10.48550/arxiv.1801.00491 · pith_short_12: S7EHM3BZRNNS · pith_short_16: S7EHM3BZRNNSFZLG · pith_short_8: S7EHM3BZ

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/S7EHM3BZRNNSFZLGAIIR2A4K4I \
  | 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: 97c8766c398b5b22e56602111d038ae2228c8288f1bd115516b460150367c3e4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "818bbee80a9997cf887a4eac03c24356c866fe8aa5bd87a80f0fbe9eeffcf8e8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2018-01-01T18:18:00Z",
    "title_canon_sha256": "3ef6d62cd23e7e02ca721b81e8447c15d26c7bc5e8c5ae98f79b5a250a8e0a81"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.00491",
    "kind": "arxiv",
    "version": 1
  }
}