Pith Number

pith:UBYMAGF4

pith:2017:UBYMAGF4JLG5UV26XKQSSU7NUD

not attested not anchored not stored refs pending

Electromagnetic fields with vanishing quantum corrections

Marcello Ortaggio, Vojt\v{e}ch Pravda

arxiv:1708.08017 v2 · 2017-08-26 · hep-th · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UBYMAGF4JLG5UV26XKQSSU7NUD}

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	2026-05-18T00:21:46.157804Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a070c018bc4acdda575ebaa12953eda0eb549fa0b4d1a786e45d665089b219b2

Aliases

arxiv: 1708.08017 · arxiv_version: 1708.08017v2 · doi: 10.48550/arxiv.1708.08017 · pith_short_12: UBYMAGF4JLG5 · pith_short_16: UBYMAGF4JLG5UV26 · pith_short_8: UBYMAGF4

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/UBYMAGF4JLG5UV26XKQSSU7NUD \
  | 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: a070c018bc4acdda575ebaa12953eda0eb549fa0b4d1a786e45d665089b219b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "74e262d1f33cdc372fc3ea33b2b22b3c22fc9ee9762a54155eee184f0935fe6b",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2017-08-26T20:22:55Z",
    "title_canon_sha256": "c3f84be92c80840a17ce407f53d8d383a84e64d4a340f5a71b4e60255d290d86"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.08017",
    "kind": "arxiv",
    "version": 2
  }
}