Pith Number

pith:7BUWDVBU

pith:2017:7BUWDVBUV7RYBKRMRNW6TJ2IE7

not attested not anchored not stored refs pending

Birth of a subaqueous barchan dune

Carlos Azael Alvarez Zambrano, Erick de Moraes Franklin

arxiv:1712.07162 v2 · 2017-12-19 · physics.flu-dyn

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7BUWDVBUV7RYBKRMRNW6TJ2IE7}

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	2026-05-18T00:04:02.868384Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f86961d434afe380aa2c8b6de9a74827fb6ed32bc89cf4f0195cbd7d9506623a

Aliases

arxiv: 1712.07162 · arxiv_version: 1712.07162v2 · doi: 10.48550/arxiv.1712.07162 · pith_short_12: 7BUWDVBUV7RY · pith_short_16: 7BUWDVBUV7RYBKRM · pith_short_8: 7BUWDVBU

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/7BUWDVBUV7RYBKRMRNW6TJ2IE7 \
  | 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: f86961d434afe380aa2c8b6de9a74827fb6ed32bc89cf4f0195cbd7d9506623a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "edba3c69df1aa98f94956c0f34043ca04e769204b7d7f3d9ce034dbe18f9d82f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2017-12-19T19:27:14Z",
    "title_canon_sha256": "5d75af99ad31cce534f28528add7e7a43a4d83ac9c8c6fb61d5e75678ccf5286"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.07162",
    "kind": "arxiv",
    "version": 2
  }
}