Pith Number

pith:4S2SDQTI

pith:2018:4S2SDQTIIH73V7WCX4FWGHQGWP

not attested not anchored not stored refs pending

NuSTAR reveals that the heavily obscured nucleus of NGC 2785 was the contaminant of IRAS 09104+4109 in the BeppoSAX/PDS hard X-rays

A. Comastri, C. Vignali, E. Piconcelli, G. Lanzuisi, K. Iwasawa, L. Ballo, M. Mignoli, P. Severgnini, R. Gilli, V. La Parola

arxiv:1809.05107 v1 · 2018-09-13 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4S2SDQTIIH73V7WCX4FWGHQGWP}

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	2026-05-18T00:01:57.742137Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4b521c26841ffbafec2bf0b631e06b3dcaf3d20b21b2e1b3e7b2f22d523602b

Aliases

arxiv: 1809.05107 · arxiv_version: 1809.05107v1 · doi: 10.48550/arxiv.1809.05107 · pith_short_12: 4S2SDQTIIH73 · pith_short_16: 4S2SDQTIIH73V7WC · pith_short_8: 4S2SDQTI

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/4S2SDQTIIH73V7WCX4FWGHQGWP \
  | 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: e4b521c26841ffbafec2bf0b631e06b3dcaf3d20b21b2e1b3e7b2f22d523602b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "702764782e967ea84d8dc3d794918de40db28cf386d7064ecd2e5789b381324e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2018-09-13T18:00:10Z",
    "title_canon_sha256": "b250a72a6e4367ac405c7db6b4cf44f2f1454e51930e0e2615bda6f5c377cc3f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.05107",
    "kind": "arxiv",
    "version": 1
  }
}