Pith Number

pith:FKHB4J2I

pith:2021:FKHB4J2IXW3H2GUKMHW3FUOGF2

not attested not anchored not stored refs pending

A twin-decoder structure for incompressible laminar flow reconstruction with uncertainty estimation around 2D obstacles

Elie Hachem, Frederic Heymes, Jonathan Viquerat, Junfeng Chen

arxiv:2104.03619 v2 · 2021-04-08 · 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{FKHB4J2IXW3H2GUKMHW3FUOGF2}

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	2026-07-05T03:19:08.030734Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a8e1e2748bdb67d1a8a61edb2d1c62ea4c0672ee2072bd2c03bfd4f3a1c7e64

Aliases

arxiv: 2104.03619 · arxiv_version: 2104.03619v2 · doi: 10.48550/arxiv.2104.03619 · pith_short_12: FKHB4J2IXW3H · pith_short_16: FKHB4J2IXW3H2GUK · pith_short_8: FKHB4J2I

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/FKHB4J2IXW3H2GUKMHW3FUOGF2 \
  | 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: 2a8e1e2748bdb67d1a8a61edb2d1c62ea4c0672ee2072bd2c03bfd4f3a1c7e64

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "47da8cb37efbd85e363d79831ef8895d6b6d9b49412b237c034e3ba5f46c1bd1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2021-04-08T09:08:02Z",
    "title_canon_sha256": "760261ad3c4a20522ba9ed0b334857728b79e83240ac7c9f13a7d62c5032d095"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.03619",
    "kind": "arxiv",
    "version": 2
  }
}