Pith Number

pith:N57U7RSN

pith:2008:N57U7RSNLYQDIOPVXRX4DQDUUP

not attested not anchored not stored refs pending

Simplicity in the Structure of QED and Gravity Amplitudes

N. E. J. Bjerrum-Bohr, Pierre Vanhove, Simon Badger

arxiv:0811.3405 v2 · 2008-11-20 · hep-th · hep-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{N57U7RSNLYQDIOPVXRX4DQDUUP}

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	2026-05-18T03:56:35.556006Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6f7f4fc64d5e203439f5bc6fc1c074a3c982bec7c2a177c21d055be4df2e1617

Aliases

arxiv: 0811.3405 · arxiv_version: 0811.3405v2 · doi: 10.48550/arxiv.0811.3405 · pith_short_12: N57U7RSNLYQD · pith_short_16: N57U7RSNLYQDIOPV · pith_short_8: N57U7RSN

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/N57U7RSNLYQDIOPVXRX4DQDUUP \
  | 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: 6f7f4fc64d5e203439f5bc6fc1c074a3c982bec7c2a177c21d055be4df2e1617

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee430e60e0715bfc18355043f076ec03cd21b3414665c5051f12eb1db6aa1a3b",
    "cross_cats_sorted": [
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2008-11-20T20:39:43Z",
    "title_canon_sha256": "d7089c5dd62f432d959cd0933d2e7f95f0a1065dfb26e5d5fd908507fe4f6ce3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0811.3405",
    "kind": "arxiv",
    "version": 2
  }
}