Pith Number

pith:6JU5FYUL

pith:2011:6JU5FYULUVUKKU2BMVRPYWQLF2

not attested not anchored not stored refs pending

Spin reversal of a rattleback with viscous friction

Hiroshi Takano

arxiv:1112.4913 v2 · 2011-12-21 · physics.class-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{6JU5FYULUVUKKU2BMVRPYWQLF2}

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	2026-05-18T04:03:44.955322Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f269d2e28ba568a553416562fc5a0b2e928c5006288973581f88b36fc6c1549b

Aliases

arxiv: 1112.4913 · arxiv_version: 1112.4913v2 · doi: 10.48550/arxiv.1112.4913 · pith_short_12: 6JU5FYULUVUK · pith_short_16: 6JU5FYULUVUKKU2B · pith_short_8: 6JU5FYUL

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/6JU5FYULUVUKKU2BMVRPYWQLF2 \
  | 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: f269d2e28ba568a553416562fc5a0b2e928c5006288973581f88b36fc6c1549b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0f9ce6cd8b2789a8042afa7359685af530a046e3b1391d11371b316c353e696d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2011-12-21T02:40:28Z",
    "title_canon_sha256": "17d875c94779942546599c10e7404b019bd9b484f2a3030daea04e3082c82959"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.4913",
    "kind": "arxiv",
    "version": 2
  }
}