Pith Number

pith:BEXXFDIX

pith:2008:BEXXFDIXTKBVTZAWXUK3XVVSBX

not attested not anchored not stored refs pending

The secret world of shrimps: polarisation vision at its best

Andrew G. White, Sonja Kleinlogel

arxiv:0804.2162 v1 · 2008-04-14 · physics.bio-ph · physics.optics · q-bio.NC · quant-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{BEXXFDIXTKBVTZAWXUK3XVVSBX}

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	2026-05-18T04:07:06.969953Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

092f728d179a8359e416bd15bbd6b20dec292b63e34a8591bb5286f607d3c4ea

Aliases

arxiv: 0804.2162 · arxiv_version: 0804.2162v1 · doi: 10.48550/arxiv.0804.2162 · pith_short_12: BEXXFDIXTKBV · pith_short_16: BEXXFDIXTKBVTZAW · pith_short_8: BEXXFDIX

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/BEXXFDIXTKBVTZAWXUK3XVVSBX \
  | 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: 092f728d179a8359e416bd15bbd6b20dec292b63e34a8591bb5286f607d3c4ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f9317a053ca014a046be44b9bbe45bce6f2cd7b1b1a26e56da0b08a50dcc091e",
    "cross_cats_sorted": [
      "physics.optics",
      "q-bio.NC",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.bio-ph",
    "submitted_at": "2008-04-14T07:14:16Z",
    "title_canon_sha256": "dd2607f798bfd5894accd2655596414e724402bf368b583295fba8435f39561d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0804.2162",
    "kind": "arxiv",
    "version": 1
  }
}