Pith Number

pith:2ZIUUSB2

pith:1997:2ZIUUSB2AA3YUDC3XLPO47BQKA

not attested not anchored not stored refs pending

Forks in the Road, on the Way to Quantum Gravity

Rafael D. Sorkin (ICN-UNAM, Syracuse University)

arxiv:gr-qc/9706002 v1 · 1997-06-01 · gr-qc · hep-th · quant-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2ZIUUSB2AA3YUDC3XLPO47BQKA}

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	2026-07-04T15:18:07.243769Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d6514a483a00378a0c5bbadeee7c30501803e6ca8318332843ff3940eac1bf55

Aliases

arxiv: gr-qc/9706002 · arxiv_version: gr-qc/9706002v1 · doi: 10.48550/arxiv.gr-qc/9706002 · pith_short_12: 2ZIUUSB2AA3Y · pith_short_16: 2ZIUUSB2AA3YUDC3 · pith_short_8: 2ZIUUSB2

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/2ZIUUSB2AA3YUDC3XLPO47BQKA \
  | 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: d6514a483a00378a0c5bbadeee7c30501803e6ca8318332843ff3940eac1bf55

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b5114ead5741d0f76ba1c9d6cc463e1a62b58be7b06bdf014fce5b21ca4097e5",
    "cross_cats_sorted": [
      "hep-th",
      "quant-ph"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1997-06-01T13:55:19Z",
    "title_canon_sha256": "5334a3ac7c027e8e013a7960debe2d74186dd18e8fa2124114d77492f1df0c68"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9706002",
    "kind": "arxiv",
    "version": 1
  }
}