Pith Number

pith:P7CSALQ5

pith:2007:P7CSALQ5R2FZE34XKXYAE76OWO

not attested not anchored not stored refs pending

On the radar method in general-relativistic spacetimes

Volker Perlick

arxiv:0708.0170 v1 · 2007-08-01 · 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{P7CSALQ5R2FZE34XKXYAE76OWO}

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.

Cited by

1 paper in Pith

Observer Time from Causality in Perturbative Quantum Gravity

Receipt and verification

First computed	2026-05-18T02:16:28.981065Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7fc5202e1d8e8b926f9755f0027fceb3be67bba5b4714c08a753a5f042f0d78a

Aliases

arxiv: 0708.0170 · arxiv_version: 0708.0170v1 · doi: 10.48550/arxiv.0708.0170 · pith_short_12: P7CSALQ5R2FZ · pith_short_16: P7CSALQ5R2FZE34X · pith_short_8: P7CSALQ5

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/P7CSALQ5R2FZE34XKXYAE76OWO \
  | 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: 7fc5202e1d8e8b926f9755f0027fceb3be67bba5b4714c08a753a5f042f0d78a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7ad88a438195d92ec83a20afdb7be01c9d5a39c6025452c36a9f236e2ee4da80",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2007-08-01T14:54:52Z",
    "title_canon_sha256": "425d5fc478e817333613ee660039ec26981a4aea62feb7621c852e4473fc3786"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0708.0170",
    "kind": "arxiv",
    "version": 1
  }
}