Pith Number

pith:IAPUWSOD

pith:2014:IAPUWSODLA2DIOB4NJJWZMXZUR

not attested not anchored not stored refs pending

Dust in Active Galactic Nuclei: Anomalous Silicate to Optical Extinction Ratios?

Aigen Li (2) ((1) Shanghai Astronomical Observatory (2) University of Missouri), Jianwei Lyu (1), Lei Hao (1)

arxiv:1407.0909 v2 · 2014-07-03 · astro-ph.GA · 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{IAPUWSODLA2DIOB4NJJWZMXZUR}

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	2026-05-18T01:42:42.338782Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

401f4b49c3583434383c6a536cb2f9a47ec72363c109990c11d785c043191145

Aliases

arxiv: 1407.0909 · arxiv_version: 1407.0909v2 · doi: 10.48550/arxiv.1407.0909 · pith_short_12: IAPUWSODLA2D · pith_short_16: IAPUWSODLA2DIOB4 · pith_short_8: IAPUWSOD

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/IAPUWSODLA2DIOB4NJJWZMXZUR \
  | 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: 401f4b49c3583434383c6a536cb2f9a47ec72363c109990c11d785c043191145

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9f25c32b3dd178f026db9968884ab8106476a335ec8be6e1467bc533c3186afe",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2014-07-03T13:10:13Z",
    "title_canon_sha256": "a087d7a54d9146c2519a16b2cca99ef90d24371e46b8700fc44360e66f63fcae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.0909",
    "kind": "arxiv",
    "version": 2
  }
}