Pith Number

pith:PXHZWBCO

pith:2014:PXHZWBCOWSMLQKNXWF64G77O2P

not attested not anchored not stored refs pending

Extremely Red Quasars from SDSS, BOSS and WISE: Classification of Optical Spectra

Adam D. Myers, Carolin Villforth, Donald P. Schneider, Fred Hamann, Gordon T. Richards, Guilin Liu, Isabelle Paris, Jenny E. Greene, Michael A. Strauss, Nadia L. Zakamska, Nicholas P. Ross, Rachael Alexandroff, W. Niel Brandt

arxiv:1405.1047 v2 · 2014-05-05 · astro-ph.GA · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PXHZWBCOWSMLQKNXWF64G77O2P}

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	2026-05-18T01:19:55.713796Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7dcf9b044eb498b829b7b17dc37feed3db9d336f9abec458e4895a72c8fc64f9

Aliases

arxiv: 1405.1047 · arxiv_version: 1405.1047v2 · doi: 10.48550/arxiv.1405.1047 · pith_short_12: PXHZWBCOWSML · pith_short_16: PXHZWBCOWSMLQKNX · pith_short_8: PXHZWBCO

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/PXHZWBCOWSMLQKNXWF64G77O2P \
  | 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: 7dcf9b044eb498b829b7b17dc37feed3db9d336f9abec458e4895a72c8fc64f9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0c86f0d259ff73cd3aa0d93adf8ec33f31c8059f365873a8326bf5dd15a63316",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2014-05-05T20:00:19Z",
    "title_canon_sha256": "6c6a86f850a48df1fbe791c3bf92c67dac683998877134a4e2f4f1c9d0bdd1bb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.1047",
    "kind": "arxiv",
    "version": 2
  }
}