Pith Number

pith:EUKZ2NAX

pith:2015:EUKZ2NAXGJVAXKUNZ2NWRAGE35

not attested not anchored not stored refs pending

Near-Infrared Spectroscopy of Quasars at z~3 and Estimates of Their Supermassive Black Hole Masses

(2) Subaru/NAOJ/GUAS, (3) University of Tokyo, (4) Sapporo Medical University, (5) Kyoto Sangyo University, (6) JAXA, (7) Ehime University, (8) Kure National College of Technology, (9) Kyoto University), Hiroaki Sameshima (5), Kenta Matsuoka (9) ((1) GUAS/Subaru/NAOJ, Masatoshi Imanishi (2), Nagisa Oi (6), Nozomu Kawatatu (8), Takeo Minezaki (3), Tohru Nagao (7), Tomoki Morokuma (3), Toshihiro Kawaguchi (4), Yosuke Minowa (2), Yuriko Saito (1)

arxiv:1510.02522 v1 · 2015-10-08 · 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{EUKZ2NAXGJVAXKUNZ2NWRAGE35}

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	2026-05-18T01:26:41.109236Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25159d3417326a0baa8dce9b6880c4df63d83655bccb3f75551b6f8ba2506bf2

Aliases

arxiv: 1510.02522 · arxiv_version: 1510.02522v1 · doi: 10.48550/arxiv.1510.02522 · pith_short_12: EUKZ2NAXGJVA · pith_short_16: EUKZ2NAXGJVAXKUN · pith_short_8: EUKZ2NAX

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/EUKZ2NAXGJVAXKUNZ2NWRAGE35 \
  | 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: 25159d3417326a0baa8dce9b6880c4df63d83655bccb3f75551b6f8ba2506bf2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8871849d53e9bb4d865cb3a9dd2572f01658b66afb29f3a2164fb786d4e28e79",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-10-08T22:29:30Z",
    "title_canon_sha256": "be005192a8b21b04d1a038ca4db1ebb55d77a4a37ade9ce80d8fedbb9b7c6d3e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.02522",
    "kind": "arxiv",
    "version": 1
  }
}