Pith Number

pith:2LX4ELEB

pith:2026:2LX4ELEBITC2F5FFNR4H42JYGZ

not attested not anchored not stored refs pending

A tabletop demonstration of distributed friction: the spinning wine glass

Ruben Canora

arxiv:2606.20694 v1 · 2026-06-15 · physics.class-ph · physics.pop-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{2LX4ELEBITC2F5FFNR4H42JYGZ}

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	2026-06-23T00:11:53.871202Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d2efc22c8144c5a2f4a56c787e69383641efc18f45fb440d8dd6fe0bea278a56

Aliases

arxiv: 2606.20694 · arxiv_version: 2606.20694v1 · doi: 10.48550/arxiv.2606.20694 · pith_short_12: 2LX4ELEBITC2 · pith_short_16: 2LX4ELEBITC2F5FF · pith_short_8: 2LX4ELEB

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/2LX4ELEBITC2F5FFNR4H42JYGZ \
  | 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: d2efc22c8144c5a2f4a56c787e69383641efc18f45fb440d8dd6fe0bea278a56

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "139163be482f4273de7aaed4dcdbcfd11261e95c1e55b9a8481431cf2518df8c",
    "cross_cats_sorted": [
      "physics.pop-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2026-06-15T06:02:15Z",
    "title_canon_sha256": "099e56594785f09bf9cbfa73fc9788b83c95ab1c8d0069fa653a714a958cf1c6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.20694",
    "kind": "arxiv",
    "version": 1
  }
}