Pith Number

pith:J7PMRQJL

pith:2016:J7PMRQJLA63XFAPHRMMR24PITP

not attested not anchored not stored refs pending

XMM-Newton reveals a Seyfert-like X-ray spectrum in the z=3.6 QSO B1422+231

B. De Marco, C. Vignali, G. Chartas, G. Lanzuisi, G. Ponti, M. Cappi, M. Dadina, M. Giustini

arxiv:1605.08549 v1 · 2016-05-27 · astro-ph.GA · 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{J7PMRQJLA63XFAPHRMMR24PITP}

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	2026-05-18T01:08:40.895135Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4fdec8c12b07b77281e78b191d71e89be31eac8ef15072f2640af960f7af88b0

Aliases

arxiv: 1605.08549 · arxiv_version: 1605.08549v1 · doi: 10.48550/arxiv.1605.08549 · pith_short_12: J7PMRQJLA63X · pith_short_16: J7PMRQJLA63XFAPH · pith_short_8: J7PMRQJL

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/J7PMRQJLA63XFAPHRMMR24PITP \
  | 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: 4fdec8c12b07b77281e78b191d71e89be31eac8ef15072f2640af960f7af88b0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b9de6ace1f70867ba01ea28419e24ea1095333fa771b6a85ab8958967bc97e88",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-05-27T09:07:23Z",
    "title_canon_sha256": "471e28f38320e2767c91fc975c2eb19516787958cef3f5bfbcf6a8522f585247"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.08549",
    "kind": "arxiv",
    "version": 1
  }
}