Pith Number

pith:OCOPJCZJ

pith:1997:OCOPJCZJ3F7OI5M4YGJZACT3IP

not attested not anchored not stored refs pending

Persistence Amplitudes from Numerical Quantum Gravity

Andrew Sornborger, Peter D'Eath

arxiv:gr-qc/9712043 v1 · 1997-12-09 · 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{OCOPJCZJ3F7OI5M4YGJZACT3IP}

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	2026-05-18T02:37:28.309227Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

709cf48b29d97ee4759cc193900a7b43f6d3298c761e87605314164c5b420d30

Aliases

arxiv: gr-qc/9712043 · arxiv_version: gr-qc/9712043v1 · doi: 10.48550/arxiv.gr-qc/9712043 · pith_short_12: OCOPJCZJ3F7O · pith_short_16: OCOPJCZJ3F7OI5M4 · pith_short_8: OCOPJCZJ

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/OCOPJCZJ3F7OI5M4YGJZACT3IP \
  | 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: 709cf48b29d97ee4759cc193900a7b43f6d3298c761e87605314164c5b420d30

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "df0b491507b7c5b69309bb17260233f40dc8ed4e61fb146dff80c9c6e2bbebd0",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1997-12-09T17:13:45Z",
    "title_canon_sha256": "9f7d2df5882bcdde40eef2f0a4d231b3b6dd3adabda764ebba8b3c55d392a35e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9712043",
    "kind": "arxiv",
    "version": 1
  }
}