Pith Number

pith:SDXL4LF3

pith:2011:SDXL4LF3D4R7PVR5RSZGA4XHF6

not attested not anchored not stored refs pending

QED Effective Action in Magnetic Field Backgrounds and Electromagnetic Duality

Kyoto Univ.), Nat'l Taiwan Univ., Sang Pyo Kim (Kunsan Nat'l Univ., YITP

arxiv:1109.1249 v1 · 2011-09-06 · hep-th · astro-ph.HE · hep-ph · nucl-th

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

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	2026-05-18T02:00:38.846582Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

90eebe2cbb1f23f7d63d8cb26072e72fba6bdac4f8b363e38f1f0dcfabf927ba

Aliases

arxiv: 1109.1249 · arxiv_version: 1109.1249v1 · doi: 10.48550/arxiv.1109.1249 · pith_short_12: SDXL4LF3D4R7 · pith_short_16: SDXL4LF3D4R7PVR5 · pith_short_8: SDXL4LF3

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/SDXL4LF3D4R7PVR5RSZGA4XHF6 \
  | 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: 90eebe2cbb1f23f7d63d8cb26072e72fba6bdac4f8b363e38f1f0dcfabf927ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9863f7b18510fbb63b9797b363135eb50c82956213aa95a197a83e2218fd60bc",
    "cross_cats_sorted": [
      "astro-ph.HE",
      "hep-ph",
      "nucl-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2011-09-06T18:00:15Z",
    "title_canon_sha256": "015ea0ae6cc950241d547695b573eda3ffe4e0bb844114b0cc2592d7da406076"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.1249",
    "kind": "arxiv",
    "version": 1
  }
}