Pith Number

pith:P55Z773N

pith:2008:P55Z773N7FKEPPORJ7RT4WFBKV

not attested not anchored not stored refs pending

The Causal Structure of QED in Curved Spacetime: Analyticity and the Refractive Index

Graham M. Shore, Timothy J. Hollowood

arxiv:0806.1019 v3 · 2008-06-05 · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{P55Z773N7FKEPPORJ7RT4WFBKV}

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	2026-05-18T04:08:35.061067Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f7b9fff6df95447bdd14fe33e58a15557d41beb238c73f9f98b2628a247b88a

Aliases

arxiv: 0806.1019 · arxiv_version: 0806.1019v3 · doi: 10.48550/arxiv.0806.1019 · pith_short_12: P55Z773N7FKE · pith_short_16: P55Z773N7FKEPPOR · pith_short_8: P55Z773N

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/P55Z773N7FKEPPORJ7RT4WFBKV \
  | 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: 7f7b9fff6df95447bdd14fe33e58a15557d41beb238c73f9f98b2628a247b88a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ced130c29127ea9f35a9044a412b0900636f547601edcb3e916609f5ccad22de",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2008-06-05T17:34:57Z",
    "title_canon_sha256": "8c55dd24ec6b32e96535d3206381c5ade6a7727557319afa8fa632d2fc12ef30"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0806.1019",
    "kind": "arxiv",
    "version": 3
  }
}