Pith Number

pith:CWUCKSXP

pith:2026:CWUCKSXPYRUHGQETNGQPS6IHQP

not attested not anchored not stored refs pending

A Simple Method of Demonstration of Characteristics of Rainbows Using a Glass of Water and a Few Laser Sources

Debapriyo Syam, Pradipta Panchadhyayee, Sanjoy Kumar Pal, Shinjinee Das Gupta, Soumen Sarkar

arxiv:2605.26148 v1 · 2026-05-23 · physics.ed-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CWUCKSXPYRUHGQETNGQPS6IHQP}

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	2026-05-27T00:04:26.226399Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

15a8254aefc46873409369a0f9790783e5f16cc04cab94b17aa3e4c71ea26cee

Aliases

arxiv: 2605.26148 · arxiv_version: 2605.26148v1 · doi: 10.48550/arxiv.2605.26148 · pith_short_12: CWUCKSXPYRUH · pith_short_16: CWUCKSXPYRUHGQET · pith_short_8: CWUCKSXP

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/CWUCKSXPYRUHGQETNGQPS6IHQP \
  | 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: 15a8254aefc46873409369a0f9790783e5f16cc04cab94b17aa3e4c71ea26cee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "020f2a854e541397783efbfe9d264b5bab9b60a986d05d19023671cf5321eddf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2026-05-23T02:37:32Z",
    "title_canon_sha256": "c6495b0a7861a43944f93298deda81c0a8e2b5a29ce9e1475afc217883335ad1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.26148",
    "kind": "arxiv",
    "version": 1
  }
}