Pith Number

pith:LV7UWSAH

pith:2015:LV7UWSAH6L7GYHSYM22AZ3AZKD

not attested not anchored not stored refs pending

The color of smiling: computational synaesthesia of facial expressions

Giuseppe Boccignone, Raffaella Lanzarotti, Vittorio Cuculo

arxiv:1505.04260 v1 · 2015-05-16 · 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{LV7UWSAH6L7GYHSYM22AZ3AZKD}

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	2026-05-18T02:07:25.951419Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5d7f4b4807f2fe6c1e5866b40cec1950fb75e9b8c96058fad279bf97a17bef09

Aliases

arxiv: 1505.04260 · arxiv_version: 1505.04260v1 · doi: 10.48550/arxiv.1505.04260 · pith_short_12: LV7UWSAH6L7G · pith_short_16: LV7UWSAH6L7GYHSY · pith_short_8: LV7UWSAH

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/LV7UWSAH6L7GYHSYM22AZ3AZKD \
  | 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: 5d7f4b4807f2fe6c1e5866b40cec1950fb75e9b8c96058fad279bf97a17bef09

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "36611574c66be6636f933cc99b4ca69792f89ecf8da6619bc77736cf3cdd173a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2015-05-16T10:28:51Z",
    "title_canon_sha256": "7fdce05cde067b4c697d7a1a7b584fbd1f38762b7f192f023c50554271706cc4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.04260",
    "kind": "arxiv",
    "version": 1
  }
}