Pith Number

pith:QV5VEBIG

pith:2011:QV5VEBIGW2FTGRJKXLXKTRZ52E

not attested not anchored not stored refs pending

Bottlenecks in granular flow: When does an obstacle increase the flowrate in an hourglass?

F. Alonso-Marroquin, L. M. Olsen-Kettle, S. A. Galindo-Torres, S. I. Azeezullah

arxiv:1109.6108 v1 · 2011-09-28 · cond-mat.soft

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QV5VEBIGW2FTGRJKXLXKTRZ52E}

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	2026-05-18T02:00:22.324365Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

857b520506b68b33452abaeea9c73dd126772f2dfdb274f428ccfcb8607aba81

Aliases

arxiv: 1109.6108 · arxiv_version: 1109.6108v1 · doi: 10.48550/arxiv.1109.6108 · pith_short_12: QV5VEBIGW2FT · pith_short_16: QV5VEBIGW2FTGRJK · pith_short_8: QV5VEBIG

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/QV5VEBIGW2FTGRJKXLXKTRZ52E \
  | 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: 857b520506b68b33452abaeea9c73dd126772f2dfdb274f428ccfcb8607aba81

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cfbf991b05f6abb98b03b93b8e27ec4f910fa7db415f1619e141971e70dc8b8d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.soft",
    "submitted_at": "2011-09-28T06:22:44Z",
    "title_canon_sha256": "c2c468a23b6cb6408a62facdc6063e562e9b82ce7251342105b55e0fe71bb8c1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.6108",
    "kind": "arxiv",
    "version": 1
  }
}