Pith Number

pith:HG4VFDY5

pith:2026:HG4VFDY5EH45ILWRSHNSZ3NZN6

not attested not anchored not stored refs pending

A conformally-Euclidean Line Element for evaluating color differences

Kristiaan Neyts, Patrick Candry, Patrick De Visschere

arxiv:2606.12588 v1 · 2026-06-10 · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HG4VFDY5EH45ILWRSHNSZ3NZN6}

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	2026-06-12T00:07:55.644768Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

39b9528f1d21f9d42ed191db2cedb96f84813138be45bb59152ab6f5d1c62528

Aliases

arxiv: 2606.12588 · arxiv_version: 2606.12588v1 · doi: 10.48550/arxiv.2606.12588 · pith_short_12: HG4VFDY5EH45 · pith_short_16: HG4VFDY5EH45ILWR · pith_short_8: HG4VFDY5

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/HG4VFDY5EH45ILWRSHNSZ3NZN6 \
  | 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: 39b9528f1d21f9d42ed191db2cedb96f84813138be45bb59152ab6f5d1c62528

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eae3fc21ddbf856036f25c42786aad0bd7e900f78a5bb9b0cb6df4b56b30fb99",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2026-06-10T18:34:49Z",
    "title_canon_sha256": "88ed122bb29d2cf8cacce2da5477b7f11da9a74722211c036970fa1b97f27ddf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.12588",
    "kind": "arxiv",
    "version": 1
  }
}