Pith Number

pith:6WA7F6D4

pith:2017:6WA7F6D457ZTT42HORYEVVHVAI

not attested not anchored not stored refs pending

Catalog of Candidates for Quasars at 3 < z < 5.5 Selected among X-Ray Sources from the 3XMM-DR4 Survey of the XMM-Newton Observatory

A.V. Meshcheryakov (1), G.A. Khorunzhev (1), R.A. Burenin (1), S.Yu. Sazonov (1) ((1) Space Research Institute of RAS)

arxiv:1701.08806 v1 · 2017-01-30 · astro-ph.GA · astro-ph.CO · 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{6WA7F6D457ZTT42HORYEVVHVAI}

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	2026-05-18T00:51:39.138187Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f581f2f87ceff339f34774704ad4f5020836a46ab3fe8c3634de7735d43d189d

Aliases

arxiv: 1701.08806 · arxiv_version: 1701.08806v1 · doi: 10.48550/arxiv.1701.08806 · pith_short_12: 6WA7F6D457ZT · pith_short_16: 6WA7F6D457ZTT42H · pith_short_8: 6WA7F6D4

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/6WA7F6D457ZTT42HORYEVVHVAI \
  | 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: f581f2f87ceff339f34774704ad4f5020836a46ab3fe8c3634de7735d43d189d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f6ecba6af72be4b754cc3ce739fe3b5b846fc0c1c74556485e98cfc45bac7c1a",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-01-30T20:02:19Z",
    "title_canon_sha256": "23cccfea3864cd32fbb22662297882490bcbd91e7782b7a64b0a87f7d848a867"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.08806",
    "kind": "arxiv",
    "version": 1
  }
}