Pith Number

pith:QRY5BQSC

pith:1997:QRY5BQSCXEYTXV5JQKXYBB3HTY

not attested not anchored not stored refs pending

Sources of Predictability

James B. Hartle (Institute for Theoretical Physics, Santa Barbara), University of California

arxiv:gr-qc/9701027 v2 · 1997-01-13 · 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{QRY5BQSCXEYTXV5JQKXYBB3HTY}

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	2026-05-18T04:24:25.903608Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8471d0c242b9313bd7a982af8087679e07a8df28753878d210f04558ec41115a

Aliases

arxiv: gr-qc/9701027 · arxiv_version: gr-qc/9701027v2 · doi: 10.48550/arxiv.gr-qc/9701027 · pith_short_12: QRY5BQSCXEYT · pith_short_16: QRY5BQSCXEYTXV5J · pith_short_8: QRY5BQSC

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/QRY5BQSCXEYTXV5JQKXYBB3HTY \
  | 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: 8471d0c242b9313bd7a982af8087679e07a8df28753878d210f04558ec41115a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3e52278b454480a12869b2324e49fc0c0e2a6fa1f247892097791b0729f6872d",
    "cross_cats_sorted": [
      "hep-th",
      "quant-ph"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1997-01-13T18:25:57Z",
    "title_canon_sha256": "36169451c2f3687a865d7ee54ce5c40bcd08da8250854dcdcecd3019a8dce2d2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9701027",
    "kind": "arxiv",
    "version": 2
  }
}