Pith Number

pith:DN2YNZ6G

pith:2015:DN2YNZ6G5JXPEMMDPK3A3QJ7Z5

not attested not anchored not stored refs pending

Variable-spot ion beam figuring

Keqiang Qiu, Lixiang Wu, Shaojun Fu

arxiv:1509.02499 v2 · 2015-09-05 · physics.ins-det

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DN2YNZ6G5JXPEMMDPK3A3QJ7Z5}

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	2026-05-18T01:20:34.269463Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1b7586e7c6ea6ef231837ab60dc13fcf5a551ffba0a742498f947079a7a9a7fa

Aliases

arxiv: 1509.02499 · arxiv_version: 1509.02499v2 · doi: 10.48550/arxiv.1509.02499 · pith_short_12: DN2YNZ6G5JXP · pith_short_16: DN2YNZ6G5JXPEMMD · pith_short_8: DN2YNZ6G

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/DN2YNZ6G5JXPEMMDPK3A3QJ7Z5 \
  | 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: 1b7586e7c6ea6ef231837ab60dc13fcf5a551ffba0a742498f947079a7a9a7fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "36f8d1e47af0fdce9408c1396f31919e9563b460bf369e43e45f3d436c62af1e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ins-det",
    "submitted_at": "2015-09-05T12:44:37Z",
    "title_canon_sha256": "b0267fbf24cca9e583d503c08b2f04a38daf7fbf83ffa0fdfa37862e66c83336"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.02499",
    "kind": "arxiv",
    "version": 2
  }
}