Pith Number

pith:HO4H5UIO

pith:2015:HO4H5UIOJYM5Z4SNDP3TL45EJH

not attested not anchored not stored refs pending

Spitzer Space Telescope Measurements of Dust Reverberation Lags in the Seyfert 1 Galaxy NGC 6418

Alessandro Capetti, Alessandro Marconi, Andrew Robinson, Billy Vazquez, Bradley M. Peterson, Catherine Buchanan, Christopher Packham, Clive Tadhunter, Dan Batcheldor, David J. Axon, Enrique Perez, Giovanna Stirpe, Hagai Netzer, Jack Gallimore, John Upton, Keith Horne, Makoto Kishimoto, Mark Bottorff, Michael Fausnaugh, Michael Richmond, Moshe Eltizur, Pasquale Galianni, Thaisa Storchi-Bergmann, Triana Almeyda, Vicente Estrada-Carpenter

arxiv:1502.01977 v1 · 2015-02-06 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HO4H5UIOJYM5Z4SNDP3TL45EJH}

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	2026-05-18T01:41:04.402583Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3bb87ed10e4e19dcf24d1bf735f3a449d44683b8a1fa0b6fded2ee54591ee528

Aliases

arxiv: 1502.01977 · arxiv_version: 1502.01977v1 · doi: 10.48550/arxiv.1502.01977 · pith_short_12: HO4H5UIOJYM5 · pith_short_16: HO4H5UIOJYM5Z4SN · pith_short_8: HO4H5UIO

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/HO4H5UIOJYM5Z4SNDP3TL45EJH \
  | 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: 3bb87ed10e4e19dcf24d1bf735f3a449d44683b8a1fa0b6fded2ee54591ee528

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "089ecb069c3b563cbe71e79c7b39890b6a60f0ab77aef4f359704c1d26d1736f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-02-06T18:19:19Z",
    "title_canon_sha256": "5face8b4f6a445dc82aec40ba1c1647667bfb524fa9c8f4334f09ca4eb80a7bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.01977",
    "kind": "arxiv",
    "version": 1
  }
}