Pith Number

pith:4ROKEC4Y

pith:2016:4ROKEC4YKECXTZTAHHOU7ODTVC

not attested not anchored not stored refs pending

Perceptually Consistent Color-to-Gray Image Conversion

Janine Walker, Nick Barnes, Shaodi You

arxiv:1605.01843 v1 · 2016-05-06 · 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{4ROKEC4YKECXTZTAHHOU7ODTVC}

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	2026-05-18T01:15:31.170272Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e45ca20b98510579e66039dd4fb873a88eba17ffd10494ab5e449c980c5dfe96

Aliases

arxiv: 1605.01843 · arxiv_version: 1605.01843v1 · doi: 10.48550/arxiv.1605.01843 · pith_short_12: 4ROKEC4YKECX · pith_short_16: 4ROKEC4YKECXTZTA · pith_short_8: 4ROKEC4Y

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/4ROKEC4YKECXTZTAHHOU7ODTVC \
  | 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: e45ca20b98510579e66039dd4fb873a88eba17ffd10494ab5e449c980c5dfe96

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f4ab3dcf7cdd7bb2a2520f5d786dfc74b93733e2561a32e05c51fe668a5768e3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2016-05-06T07:13:48Z",
    "title_canon_sha256": "72dc4bb1daca7ff51b5947767b73e8d46ca30c088cf0a993aafc21cd0dbb9f38"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.01843",
    "kind": "arxiv",
    "version": 1
  }
}