Pith Number

pith:4HRKKB6W

pith:2021:4HRKKB6W2Z3MVM4TDC3MSQHTSX

not attested not anchored not stored refs pending

SREDS: A dichromatic separation based measure of skin color

Chinmay Sahu, Keivan Bahmani, Mahesh Banavar, Richard Plesh, Stephanie Schuckers

arxiv:2104.02926 v1 · 2021-04-07 · eess.IV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4HRKKB6W2Z3MVM4TDC3MSQHTSX}

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	2026-07-05T02:30:01.070641Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1e2a507d6d676cab39318b6c940f395eeb62a646fcfa4ef6be980bb1114d1fc

Aliases

arxiv: 2104.02926 · arxiv_version: 2104.02926v1 · doi: 10.48550/arxiv.2104.02926 · pith_short_12: 4HRKKB6W2Z3M · pith_short_16: 4HRKKB6W2Z3MVM4T · pith_short_8: 4HRKKB6W

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/4HRKKB6W2Z3MVM4TDC3MSQHTSX \
  | 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: e1e2a507d6d676cab39318b6c940f395eeb62a646fcfa4ef6be980bb1114d1fc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "af7bbd3629837f45c65041a88d173445382118c35267548734df9726dda7c2e0",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "eess.IV",
    "submitted_at": "2021-04-07T05:44:02Z",
    "title_canon_sha256": "08a1d506a444290e306622550e75b341584917c22e67609fe2d18d74e1081775"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.02926",
    "kind": "arxiv",
    "version": 1
  }
}