Pith Number

pith:TIVHVBEK

pith:2020:TIVHVBEKG6GTRCBEWSG65URIOH

not attested not anchored not stored refs pending

Why is a soap bubble like a railway?

David Wakeham

arxiv:2008.09611 v1 · 2020-08-23 · physics.pop-ph · math.HO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TIVHVBEKG6GTRCBEWSG65URIOH}

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	2026-07-05T01:29:15.201594Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9a2a7a848a378d388824b48deed22871e233b714574169573f1d7cf273d35432

Aliases

arxiv: 2008.09611 · arxiv_version: 2008.09611v1 · doi: 10.48550/arxiv.2008.09611 · pith_short_12: TIVHVBEKG6GT · pith_short_16: TIVHVBEKG6GTRCBE · pith_short_8: TIVHVBEK

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/TIVHVBEKG6GTRCBEWSG65URIOH \
  | 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: 9a2a7a848a378d388824b48deed22871e233b714574169573f1d7cf273d35432

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "777643a7ed4f51ae2c21a2b121e1e0f86a777588f91503f5d44b9b15c4a4d7e4",
    "cross_cats_sorted": [
      "math.HO"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "physics.pop-ph",
    "submitted_at": "2020-08-23T21:34:10Z",
    "title_canon_sha256": "8b8840ed1e068a8da00a752cc58224cf68d6ed9bf6ac751d5135b7fc9eb1afb3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2008.09611",
    "kind": "arxiv",
    "version": 1
  }
}