Pith Number

pith:LJ6VDEOI

pith:2004:LJ6VDEOIOPLZ4W5OLS2FRHJBSY

not attested not anchored not stored refs pending

Horizons

Gerard 't Hooft (Spinoza Institute, ITP, Netherlands), Utrecht

arxiv:gr-qc/0401027 v1 · 2004-01-08 · 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{LJ6VDEOIOPLZ4W5OLS2FRHJBSY}

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	2026-05-18T00:37:16.526648Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5a7d5191c873d79e5bae5cb4589d21960dad00487711fbeff100239e439684c0

Aliases

arxiv: gr-qc/0401027 · arxiv_version: gr-qc/0401027v1 · doi: 10.48550/arxiv.gr-qc/0401027 · pith_short_12: LJ6VDEOIOPLZ · pith_short_16: LJ6VDEOIOPLZ4W5O · pith_short_8: LJ6VDEOI

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/LJ6VDEOIOPLZ4W5OLS2FRHJBSY \
  | 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: 5a7d5191c873d79e5bae5cb4589d21960dad00487711fbeff100239e439684c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6880b2a07b83cca33352430f008156a2aa31ae3cfceaf576ac071ab0eb3f9dfe",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2004-01-08T13:10:02Z",
    "title_canon_sha256": "701e5ae2cd2a38d9a79e484ee3e89e14368b9427f9795c361ab1ccb1d348989c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0401027",
    "kind": "arxiv",
    "version": 1
  }
}