Pith Number

pith:WKYT5QCR

pith:2010:WKYT5QCRBX6X3EO7XJU6WLQOPS

not attested not anchored not stored refs pending

Extinction in Star-Forming Disk Galaxies from Inclination-Dependent Composite Spectra

Alex Szalay, Ching-Wa Yip, Istvan Csabai, Laszlo Dobos, Rosemary Wyse, Tamas Budavari

arxiv:1001.1424 v1 · 2010-01-09 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WKYT5QCRBX6X3EO7XJU6WLQOPS}

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	2026-05-18T02:10:03.507143Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b2b13ec0510dfd7d91dfba69eb2e0e7c82e075c4fb37f60ab356bc783cc7eb8b

Aliases

arxiv: 1001.1424 · arxiv_version: 1001.1424v1 · doi: 10.48550/arxiv.1001.1424 · pith_short_12: WKYT5QCRBX6X · pith_short_16: WKYT5QCRBX6X3EO7 · pith_short_8: WKYT5QCR

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/WKYT5QCRBX6X3EO7XJU6WLQOPS \
  | 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: b2b13ec0510dfd7d91dfba69eb2e0e7c82e075c4fb37f60ab356bc783cc7eb8b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "32109b987f62a5e92cd7c28fe94f4ce9099d66ffee015e8878b7515462bc36ff",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-01-09T13:59:51Z",
    "title_canon_sha256": "02436b419e2c50ef89e0055f38b8b0ca8a7d37f12c148d5f38ede8f9c5617449"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1001.1424",
    "kind": "arxiv",
    "version": 1
  }
}