Pith Number

pith:K4DGIWGI

pith:2010:K4DGIWGIXX4KXMKYCPEN6ENFEH

not attested not anchored not stored refs pending

Physical consequences of the QED theta angle

Stephen D.H. Hsu

arxiv:1012.2906 v1 · 2010-12-14 · hep-th · hep-ph · quant-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{K4DGIWGIXX4KXMKYCPEN6ENFEH}

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	2026-05-18T04:33:26.432530Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

57066458c8bdf8abb15813c8df11a521c899f2c33c4b7317cd36d57c51695604

Aliases

arxiv: 1012.2906 · arxiv_version: 1012.2906v1 · doi: 10.48550/arxiv.1012.2906 · pith_short_12: K4DGIWGIXX4K · pith_short_16: K4DGIWGIXX4KXMKY · pith_short_8: K4DGIWGI

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/K4DGIWGIXX4KXMKYCPEN6ENFEH \
  | 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: 57066458c8bdf8abb15813c8df11a521c899f2c33c4b7317cd36d57c51695604

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "28667a469e22fdc7cea18f0ddde9d976457435ef9cfa8935a6edae66c64c6829",
    "cross_cats_sorted": [
      "hep-ph",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2010-12-14T00:13:29Z",
    "title_canon_sha256": "a24590e43d00753546f3063673cb8123cda5e3df9a149bdf04347c75981f7a89"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1012.2906",
    "kind": "arxiv",
    "version": 1
  }
}