Pith Number

pith:H2SRX5BE

pith:2019:H2SRX5BEKGZK45HVUDFTSZUWGZ

not attested not anchored not stored refs pending

Classical polarimetry with a twist: a compact, geometric approach

Rebecca M. Sparks, Thomas A. Germer, William B. Sparks

arxiv:1905.00843 v1 · 2019-05-02 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H2SRX5BEKGZK45HVUDFTSZUWGZ}

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	2026-05-17T23:44:54.071023Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ea51bf42451b2ae74f5a0cb396696366aaa66c8a93643cef0cb06287e051e93

Aliases

arxiv: 1905.00843 · arxiv_version: 1905.00843v1 · doi: 10.48550/arxiv.1905.00843 · pith_short_12: H2SRX5BEKGZK · pith_short_16: H2SRX5BEKGZK45HV · pith_short_8: H2SRX5BE

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/H2SRX5BEKGZK45HVUDFTSZUWGZ \
  | 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: 3ea51bf42451b2ae74f5a0cb396696366aaa66c8a93643cef0cb06287e051e93

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bde5adf6098ad1f04e49c619fdb4b9cc3d0a4e496603f5152f408b131c1567ec",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-05-02T16:41:56Z",
    "title_canon_sha256": "edceb2aacca3f6e3c64499b2d153ace34096825d968b7817976298f33a6e5dec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.00843",
    "kind": "arxiv",
    "version": 1
  }
}