Pith Number

pith:63TPGKHT

pith:2012:63TPGKHTDOIZW6AXL5CNODQZSV

not attested not anchored not stored refs pending

User Guide for the Discrete Dipole Approximation Code DDSCAT 7.2

Bruce T. Draine (Princeton Univ.), Piotr J. Flatau (UCSD)

arxiv:1202.3424 v3 · 2012-02-15 · physics.comp-ph · astro-ph.GA · cond-mat.mes-hall · 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{63TPGKHTDOIZW6AXL5CNODQZSV}

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	2026-05-18T03:55:37.028818Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f6e6f328f31b919b78175f44d70e199578d0935867461fb55173d573c5ac6f67

Aliases

arxiv: 1202.3424 · arxiv_version: 1202.3424v3 · doi: 10.48550/arxiv.1202.3424 · pith_short_12: 63TPGKHTDOIZ · pith_short_16: 63TPGKHTDOIZW6AX · pith_short_8: 63TPGKHT

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/63TPGKHTDOIZW6AXL5CNODQZSV \
  | 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: f6e6f328f31b919b78175f44d70e199578d0935867461fb55173d573c5ac6f67

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "995b811eaed08df5b39c2884ff695894952e8419c2b049f47e618eea67abf69c",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "cond-mat.mes-hall",
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.comp-ph",
    "submitted_at": "2012-02-15T20:27:02Z",
    "title_canon_sha256": "25b72cba491b0876fbba125bd39ed1eab0b50adaa99b225c77844a0fe606929f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.3424",
    "kind": "arxiv",
    "version": 3
  }
}