Pith Number

pith:YCHWSJWF

pith:2019:YCHWSJWFJWW4SWLBK4BILORU7A

not attested not anchored not stored refs pending

The final SDSS-IV/SPIDERS X-ray point source spectroscopic catalogue

A. Georgakakis, A. Merloni, A. Schwope, D. Bizyaev, D. Coffey, D. P. Schneider, J. Buchner, J. Comparat, J. R. Brownstein, J. Wolf, K. Nandra, K. Pan, M. Brusa, M. Salvato, N. Clerc, R. Arcodia, T. Dwelly, T. Liu

arxiv:1912.03068 v2 · 2019-12-06 · 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{YCHWSJWFJWW4SWLBK4BILORU7A}

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	2026-07-05T00:58:44.166503Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c08f6926c54dadc95961570285ba34f81901d69f2a9d7ab3eb46edb8f92bf40d

Aliases

arxiv: 1912.03068 · arxiv_version: 1912.03068v2 · doi: 10.48550/arxiv.1912.03068 · pith_short_12: YCHWSJWFJWW4 · pith_short_16: YCHWSJWFJWW4SWLB · pith_short_8: YCHWSJWF

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/YCHWSJWFJWW4SWLBK4BILORU7A \
  | 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: c08f6926c54dadc95961570285ba34f81901d69f2a9d7ab3eb46edb8f92bf40d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cb2cdb1438bad7bd7bbb5a0aa9964008e4a45525ed4af7db6b696b252b405680",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-12-06T11:19:08Z",
    "title_canon_sha256": "2c2f10a7d06407e595dccab03cf2646d5789ea3a5345492d585bca64632f9918"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1912.03068",
    "kind": "arxiv",
    "version": 2
  }
}