Pith Number

pith:Z2IG3CDF

pith:2018:Z2IG3CDFFYFBKYGMR4A6RYWYJW

not attested not anchored not stored refs pending

XZ: Deriving redshifts from X-ray spectra of obscured AGN

Charlotte Simmonds, Franz Erik Bauer, Johannes Buchner, Li-Ting Hsu, Mara Salvato

arxiv:1807.01782 v1 · 2018-07-04 · astro-ph.IM · 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{Z2IG3CDFFYFBKYGMR4A6RYWYJW}

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	2026-05-18T00:03:04.755886Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ce906d88652e0a1560cc8f01e8e2d84d96a50a7c36a60ecbc5ea4cc977ea1c50

Aliases

arxiv: 1807.01782 · arxiv_version: 1807.01782v1 · doi: 10.48550/arxiv.1807.01782 · pith_short_12: Z2IG3CDFFYFB · pith_short_16: Z2IG3CDFFYFBKYGM · pith_short_8: Z2IG3CDF

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/Z2IG3CDFFYFBKYGMR4A6RYWYJW \
  | 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: ce906d88652e0a1560cc8f01e8e2d84d96a50a7c36a60ecbc5ea4cc977ea1c50

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "01fb39f953870b8248f38bc2614fb0f3c5bc0ae6f77697711642896ac65cecf3",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2018-07-04T21:17:27Z",
    "title_canon_sha256": "ab7d2b1eb5520c5f264871cd456fba4fccecaa09bca9f3f09b752c7ce44f8c39"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.01782",
    "kind": "arxiv",
    "version": 1
  }
}