Pith Number

pith:SW4HKLDH

pith:2015:SW4HKLDH7X6PIWHOL4QT53XTLB

not attested not anchored not stored refs pending

Null-Field Radiationless Sources: Comment

Iver Brevik

arxiv:1509.03506 v1 · 2015-09-11 · 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{SW4HKLDH7X6PIWHOL4QT53XTLB}

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	2026-05-18T01:32:59.011520Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

95b8752c67fdfcf458ee5f213eeef3587915304aa3572b00f2614869e97a4c56

Aliases

arxiv: 1509.03506 · arxiv_version: 1509.03506v1 · doi: 10.48550/arxiv.1509.03506 · pith_short_12: SW4HKLDH7X6P · pith_short_16: SW4HKLDH7X6PIWHO · pith_short_8: SW4HKLDH

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/SW4HKLDH7X6PIWHOL4QT53XTLB \
  | 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: 95b8752c67fdfcf458ee5f213eeef3587915304aa3572b00f2614869e97a4c56

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "965652ff8684b252f4203f3822e3a4cdc30e55c0565466bc510096825ecb1880",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2015-09-11T13:46:46Z",
    "title_canon_sha256": "f6e734b12992d25595fd352843baf0b5b0ebdbf83a726d05f4c6004995b46b2f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.03506",
    "kind": "arxiv",
    "version": 1
  }
}