Pith Number

pith:VPRNWPFA

pith:2013:VPRNWPFAIU6XDM5KUK2ELW2U7E

not attested not anchored not stored refs pending

The Quest for the Most Spherical Bubble

Aurele de Bosset, Danail Obreschkow, Marc Tinguely, Mohamed Farhat, Nicolas Dorsaz, Philippe Kobel

arxiv:1303.4872 v2 · 2013-03-20 · physics.flu-dyn · physics.space-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{VPRNWPFAIU6XDM5KUK2ELW2U7E}

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	2026-05-18T03:28:16.942870Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

abe2db3ca0453d71b3aaa2b445db54f9150f1758d7f67df0b3502ddd431bb538

Aliases

arxiv: 1303.4872 · arxiv_version: 1303.4872v2 · doi: 10.48550/arxiv.1303.4872 · pith_short_12: VPRNWPFAIU6X · pith_short_16: VPRNWPFAIU6XDM5K · pith_short_8: VPRNWPFA

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/VPRNWPFAIU6XDM5KUK2ELW2U7E \
  | 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: abe2db3ca0453d71b3aaa2b445db54f9150f1758d7f67df0b3502ddd431bb538

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b32d59ad0cb0983e6effbf813e78d2b03fdb50d9c81641fd70f38d4b8ba1f490",
    "cross_cats_sorted": [
      "physics.space-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2013-03-20T08:43:03Z",
    "title_canon_sha256": "229e837c87d789ce8f0193f4961a789292647bb90cd28bdc0546f23c6fc3cf70"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.4872",
    "kind": "arxiv",
    "version": 2
  }
}