Pith Number

pith:JNCJTXFQ

pith:2010:JNCJTXFQZRSO2Z5LEFVXH7C7L4

not attested not anchored not stored refs pending

Cornu's spiral in the Fresnel regime studied using ultrasound: A phase study

Akira Hitachi

arxiv:1008.4201 v2 · 2010-08-25 · physics.class-ph · 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{JNCJTXFQZRSO2Z5LEFVXH7C7L4}

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	2026-05-18T04:25:28.127350Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4b4499dcb0cc64ed67ab216b73fc5f5f22bf061d030c27ae07d58676a1c77c66

Aliases

arxiv: 1008.4201 · arxiv_version: 1008.4201v2 · doi: 10.48550/arxiv.1008.4201 · pith_short_12: JNCJTXFQZRSO · pith_short_16: JNCJTXFQZRSO2Z5L · pith_short_8: JNCJTXFQ

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/JNCJTXFQZRSO2Z5LEFVXH7C7L4 \
  | 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: 4b4499dcb0cc64ed67ab216b73fc5f5f22bf061d030c27ae07d58676a1c77c66

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4cdfdff78f76b8f2ca8427a4699fde6ee87b403aa0f205461019456fb9f7e723",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2010-08-25T05:14:17Z",
    "title_canon_sha256": "d0d291216356c51910aca45e953eb21e2653744dbcdf78ddc84940f00835865e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1008.4201",
    "kind": "arxiv",
    "version": 2
  }
}