Pith Number

pith:5SPX3UWQ

pith:1999:5SPX3UWQZLFZXLDUZCO5KCL73U

not attested not anchored not stored refs pending

Nature: "I have Two Times"

Sascha Vongehr

arxiv:hep-th/9907034 v2 · 1999-07-07 · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5SPX3UWQZLFZXLDUZCO5KCL73U}

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	2026-07-04T14:33:29.042696Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec9f7dd2d0cacb9bac74c89dd5097fdd3f6d0ebb85aa1c4799f4bbe81c5ae201

Aliases

arxiv: hep-th/9907034 · arxiv_version: hep-th/9907034v2 · doi: 10.48550/arxiv.hep-th/9907034 · pith_short_12: 5SPX3UWQZLFZ · pith_short_16: 5SPX3UWQZLFZXLDU · pith_short_8: 5SPX3UWQ

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/5SPX3UWQZLFZXLDUZCO5KCL73U \
  | 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: ec9f7dd2d0cacb9bac74c89dd5097fdd3f6d0ebb85aa1c4799f4bbe81c5ae201

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c679fdd4937a831f7ce98c1eb95ae35d55b11e857b35a538de314a0efac0e463",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "hep-th",
    "submitted_at": "1999-07-07T01:25:52Z",
    "title_canon_sha256": "88fbaf336f730e65258eadb8f4d90576b1f9d689083bffe727e85beb4549782c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-th/9907034",
    "kind": "arxiv",
    "version": 2
  }
}