Pith Number

pith:L5KA4WPY

pith:2018:L5KA4WPYXIJX5DO4JBFR66BRCQ

not attested not anchored not stored refs pending

BRDF Estimation of Complex Materials with Nested Learning

Dan Casas, Elena Garces, Jorge Lopez-Moreno, Raquel Vidaurre

arxiv:1811.09131 v1 · 2018-11-22 · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{L5KA4WPYXIJX5DO4JBFR66BRCQ}

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	2026-05-18T00:00:06.972960Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f540e59f8ba137e8ddc484b1f783114294a0d5a30016b41de80ef53a620b808

Aliases

arxiv: 1811.09131 · arxiv_version: 1811.09131v1 · doi: 10.48550/arxiv.1811.09131 · pith_short_12: L5KA4WPYXIJX · pith_short_16: L5KA4WPYXIJX5DO4 · pith_short_8: L5KA4WPY

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/L5KA4WPYXIJX5DO4JBFR66BRCQ \
  | 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: 5f540e59f8ba137e8ddc484b1f783114294a0d5a30016b41de80ef53a620b808

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b7dc003191c3e79e4bf31761af5f923f614d0a2d0c6c3a55642a884cf9f91799",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2018-11-22T12:15:30Z",
    "title_canon_sha256": "89f8f72a87ba4acb90016de34e4d7af63d61d7ecdada2ec7c897d26efb09de0a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.09131",
    "kind": "arxiv",
    "version": 1
  }
}