Pith Number

pith:2BYWECWV

pith:2017:2BYWECWV2N5ZA3QOR6FCU2WDOT

not attested not anchored not stored refs pending

Parapositronium can decay into three photons

Andrzej Czarnecki, Andrzej Pokraka

arxiv:1707.09466 v2 · 2017-07-29 · hep-ph · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2BYWECWV2N5ZA3QOR6FCU2WDOT}

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	2026-05-18T00:30:43.654646Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d071620ad5d37b906e0e8f8a2a6ac374e488847a959680bb9129645248f2b8bc

Aliases

arxiv: 1707.09466 · arxiv_version: 1707.09466v2 · doi: 10.48550/arxiv.1707.09466 · pith_short_12: 2BYWECWV2N5Z · pith_short_16: 2BYWECWV2N5ZA3QO · pith_short_8: 2BYWECWV

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/2BYWECWV2N5ZA3QOR6FCU2WDOT \
  | 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: d071620ad5d37b906e0e8f8a2a6ac374e488847a959680bb9129645248f2b8bc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "663ebd513747385a898a420746c9332c44d10b59cb0f8efb47e1bd24e7571446",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-ph",
    "submitted_at": "2017-07-29T05:52:56Z",
    "title_canon_sha256": "1a9b1311edc8c94d2bb54c61a9e97a7c754683e7c63c6d640ec5505d3a44ed19"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.09466",
    "kind": "arxiv",
    "version": 2
  }
}