Pith Number

pith:652LQ6UY

pith:2017:652LQ6UYONJN2EPGPUG3Z7LBI3

not attested not anchored not stored refs pending

Optical Spectroscopy of Candidates for Quasars at 3<z<5.5 from the XMM-Newton X-ray survey. A distant X-ray Quasar at z=5.08

(2) Institute of Solar-Terrestrial Physics of Siberian brunch RAS), A.L. Amvrosov (2), G.A. Khorunzhev (1), M.V. Eselevich (2) ((1) Space Research Institute of RAS, R.A. Burenin (1), S.Yu. Sazonov (1)

arxiv:1701.08820 v1 · 2017-01-30 · astro-ph.GA · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{652LQ6UYONJN2EPGPUG3Z7LBI3}

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	2026-05-18T00:51:39.115542Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f774b87a987352dd11e67d0dbcfd6146eca6e05cd8ce6f648f8baf3892c763b4

Aliases

arxiv: 1701.08820 · arxiv_version: 1701.08820v1 · doi: 10.48550/arxiv.1701.08820 · pith_short_12: 652LQ6UYONJN · pith_short_16: 652LQ6UYONJN2EPG · pith_short_8: 652LQ6UY

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/652LQ6UYONJN2EPGPUG3Z7LBI3 \
  | 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: f774b87a987352dd11e67d0dbcfd6146eca6e05cd8ce6f648f8baf3892c763b4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c886a58b8f7001e500734a4c8bd2257e34ddcbdba6ee4b3c2f8044bafb3ab30",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-01-30T20:37:53Z",
    "title_canon_sha256": "cc639c29b874898579f0225ca27fb2a6c9da6b6e07e30c9dad8e38d0260d3968"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.08820",
    "kind": "arxiv",
    "version": 1
  }
}