Pith Number

pith:DUELWIQW

pith:2009:DUELWIQW6CEO36DEKXJXGKORL3

not attested not anchored not stored refs pending

The Effect of Dust Extinction on the Observed Properties of Galaxies in the Near-Infrared

Ihab F. Riad (1), Patrick A. Woudt (1) ((1) Department of Astronomy, Ren\'ee C. Kraan-Korteweg (1), South Africa), University of Cape Town

arxiv:0909.3569 v1 · 2009-09-19 · 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{DUELWIQW6CEO36DEKXJXGKORL3}

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	2026-05-18T02:11:46.174227Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1d08bb2216f088edf86455d37329d15efaa49106b17302322e64a0a1851faabb

Aliases

arxiv: 0909.3569 · arxiv_version: 0909.3569v1 · doi: 10.48550/arxiv.0909.3569 · pith_short_12: DUELWIQW6CEO · pith_short_16: DUELWIQW6CEO36DE · pith_short_8: DUELWIQW

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/DUELWIQW6CEO36DEKXJXGKORL3 \
  | 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: 1d08bb2216f088edf86455d37329d15efaa49106b17302322e64a0a1851faabb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a72a434d067474116e12248f7d342732120ddb0331b83bc08cdef18a1c51e13e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-09-19T08:38:50Z",
    "title_canon_sha256": "acf1459c07b52cc582b3f44618f31d640396472772f3382282f93c104598c0e5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.3569",
    "kind": "arxiv",
    "version": 1
  }
}