Pith Number

pith:IRA5KLT2

pith:2004:IRA5KLT2CKZPYN2WGMRLW4V6M5

not attested not anchored not stored refs pending

Spacetime topology from causality

Keye Martin, Prakash Panangaden

arxiv:gr-qc/0407093 v1 · 2004-07-26 · 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{IRA5KLT2CKZPYN2WGMRLW4V6M5}

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	2026-07-04T14:25:47.057916Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4441d52e7a12b2fc37563322bb72be676217bab0642f81c60323062898faa54e

Aliases

arxiv: gr-qc/0407093 · arxiv_version: gr-qc/0407093v1 · doi: 10.48550/arxiv.gr-qc/0407093 · pith_short_12: IRA5KLT2CKZP · pith_short_16: IRA5KLT2CKZPYN2W · pith_short_8: IRA5KLT2

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/IRA5KLT2CKZPYN2WGMRLW4V6M5 \
  | 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: 4441d52e7a12b2fc37563322bb72be676217bab0642f81c60323062898faa54e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3500093cd98221cb691baef8fe9175187b1c489d1dc0223d69b23a9131104318",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2004-07-26T02:54:11Z",
    "title_canon_sha256": "b6f39b33f3ce9015ecf1b6ad6c0ccf14492a7d31cbefe34170ef60d105fb84a3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0407093",
    "kind": "arxiv",
    "version": 1
  }
}