Pith Number

pith:EA6H4BB2

pith:2014:EA6H4BB24I2DYXXSD3RU5UID5X

not attested not anchored not stored refs pending

Hyperfine splitting in positronium to ${\cal O}(\alpha^7m_e)$: one-photon annihilation contribution

Alexander Penin, Jan Piclum, Marc Baker, Matthias Steinhauser, Peter Marquard

arxiv:1402.0876 v1 · 2014-02-04 · hep-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{EA6H4BB24I2DYXXSD3RU5UID5X}

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	2026-05-18T02:55:05.459611Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

203c7e043ae2343c5ef21ee34ed103edf6e4d239f8c16bbd71ce3ccf79f745a5

Aliases

arxiv: 1402.0876 · arxiv_version: 1402.0876v1 · doi: 10.48550/arxiv.1402.0876 · pith_short_12: EA6H4BB24I2D · pith_short_16: EA6H4BB24I2DYXXS · pith_short_8: EA6H4BB2

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/EA6H4BB24I2DYXXSD3RU5UID5X \
  | 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: 203c7e043ae2343c5ef21ee34ed103edf6e4d239f8c16bbd71ce3ccf79f745a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "19c1ffff2e389369ff1fa29fe0a60b3fd09ad66fd0eb255307530495350fa985",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-ph",
    "submitted_at": "2014-02-04T21:00:57Z",
    "title_canon_sha256": "c7fac26f5eb39162a7eba35902136764080aea4987be11275d0c27f4f8ad0e93"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.0876",
    "kind": "arxiv",
    "version": 1
  }
}