Pith Number

pith:D4FLY3MM

pith:2015:D4FLY3MM36DBQLRKGAWP72NHGQ

not attested not anchored not stored refs pending

Mid-infrared luminous quasars in the GOODS-Herschel fields: a large population of heavily-obscured, Compton-thick quasars at z~2

A. Del Moro (Durham University, B. Luo, C. M. Harrison, D. D. Kocevski, D. Elbaz, D. H. McIntosh, D. M. Alexander, E. Daddi, F. E. Bauer, F. Stanley, J. R. Mullaney, MPE), W. N. Brandt, Y. Q. Xue

arxiv:1504.03329 v2 · 2015-04-13 · 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{D4FLY3MM36DBQLRKGAWP72NHGQ}

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	2026-05-18T01:22:01.673645Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f0abc6d8cdf86182e2a302cffe9a7342b480a3e9c800923417b8a0034853b46

Aliases

arxiv: 1504.03329 · arxiv_version: 1504.03329v2 · doi: 10.48550/arxiv.1504.03329 · pith_short_12: D4FLY3MM36DB · pith_short_16: D4FLY3MM36DBQLRK · pith_short_8: D4FLY3MM

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/D4FLY3MM36DBQLRKGAWP72NHGQ \
  | 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: 1f0abc6d8cdf86182e2a302cffe9a7342b480a3e9c800923417b8a0034853b46

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "76245804f419239d61da21706ec2de5acb97063600d498674fbddcdbb40af970",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-04-13T20:00:53Z",
    "title_canon_sha256": "670c0a436ea0d65a34cd48a8a4a20cbbe7e7b5d6f697ba1995a7477c7d5e172b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.03329",
    "kind": "arxiv",
    "version": 2
  }
}