Pith Number

pith:PZ4FP5UM

pith:2014:PZ4FP5UMFELZ6EDTRXQFIUQJ2G

not attested not anchored not stored refs pending

The True (?) Story of Hilbert's Infinite Hotel

Helge Kragh

arxiv:1403.0059 v2 · 2014-03-01 · physics.hist-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{PZ4FP5UMFELZ6EDTRXQFIUQJ2G}

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	2026-05-18T02:55:27.209657Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e7857f68c29179f10738de0545209d197e5c93266cf65e44e484e1d32b0e770

Aliases

arxiv: 1403.0059 · arxiv_version: 1403.0059v2 · doi: 10.48550/arxiv.1403.0059 · pith_short_12: PZ4FP5UMFELZ · pith_short_16: PZ4FP5UMFELZ6EDT · pith_short_8: PZ4FP5UM

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/PZ4FP5UMFELZ6EDTRXQFIUQJ2G \
  | 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: 7e7857f68c29179f10738de0545209d197e5c93266cf65e44e484e1d32b0e770

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "baafa2770696941e629713000d8935ffe9c54e534dec46ddfef050190fee5e5c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2014-03-01T07:24:21Z",
    "title_canon_sha256": "eed80a9974d6b7e113d4e5cc06e53b20fac9e2bfcc2c5fb1b4926b2f06d5fbea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.0059",
    "kind": "arxiv",
    "version": 2
  }
}