Pith Number

pith:PP42HSXA

pith:2015:PP42HSXAJRTP5IDDBVBOKRPOYC

not attested not anchored not stored refs pending

Positron annihilation with core and valence electrons

D. G. Green, G. F. Gribakin

arxiv:1502.08045 v2 · 2015-02-27 · physics.atom-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{PP42HSXAJRTP5IDDBVBOKRPOYC}

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	2026-05-18T02:25:33.619557Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7bf9a3cae04c66fea0630d42e545eec0b4f6173184876ba516518b4258192408

Aliases

arxiv: 1502.08045 · arxiv_version: 1502.08045v2 · doi: 10.48550/arxiv.1502.08045 · pith_short_12: PP42HSXAJRTP · pith_short_16: PP42HSXAJRTP5IDD · pith_short_8: PP42HSXA

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/PP42HSXAJRTP5IDDBVBOKRPOYC \
  | 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: 7bf9a3cae04c66fea0630d42e545eec0b4f6173184876ba516518b4258192408

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d2835fb5b28f34c49adca57604446bc1d78a6c7ef3d3109da646d03dd944a0b8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2015-02-27T20:32:14Z",
    "title_canon_sha256": "9c0ea2b3f98254df0dea78c42a0bc4547e53efbc3404c7f4747dfcaf4c51e8b5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.08045",
    "kind": "arxiv",
    "version": 2
  }
}