Pith Number

pith:54KFHZL4

pith:1997:54KFHZL4GLLRIJKRFZUKKO2FT6

not attested not anchored not stored refs pending

"Faster Than Light" Photons in Dilaton Black Hole Spacetimes

Hing Tong Cho

arxiv:gr-qc/9704014 v1 · 1997-04-07 · 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{54KFHZL4GLLRIJKRFZUKKO2FT6}

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	2026-05-18T02:37:29.470797Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef1453e57c32d71425512e68a53b459fadf47c01e44f456a87a8b774f4db2b50

Aliases

arxiv: gr-qc/9704014 · arxiv_version: gr-qc/9704014v1 · doi: 10.48550/arxiv.gr-qc/9704014 · pith_short_12: 54KFHZL4GLLR · pith_short_16: 54KFHZL4GLLRIJKR · pith_short_8: 54KFHZL4

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/54KFHZL4GLLRIJKRFZUKKO2FT6 \
  | 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: ef1453e57c32d71425512e68a53b459fadf47c01e44f456a87a8b774f4db2b50

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cb769b89f48947107c0f480bcec6ba15accddc6e1260758b8b0f3c649a5d874a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1997-04-07T04:47:26Z",
    "title_canon_sha256": "aef724266e35cd5307a634633bdb4d7ede59382e821224d257e1bcd3cf805a0b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9704014",
    "kind": "arxiv",
    "version": 1
  }
}