Pith Number

pith:VJ2M6LSB

pith:2012:VJ2M6LSBGOPWCFTFEEHNOSGFEK

not attested not anchored not stored refs pending

Heavily Reddened Quasars at z~2 in the UKIDSS Large Area Survey: A Transitional Phase in AGN Evolution

Bram P. Venemans, Cambridge), Eduardo Gonzalez-Solares, Manda Banerji (IoA, Paul C. Hewett, Richard G. McMahon, Susannah Alaghband-Zadeh

arxiv:1203.5530 v3 · 2012-03-25 · 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{VJ2M6LSBGOPWCFTFEEHNOSGFEK}

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	2026-05-18T01:58:02.024239Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aa74cf2e41339f611665210ed748c522ab6e6110b58e8c3e5cbc9670cd01a49a

Aliases

arxiv: 1203.5530 · arxiv_version: 1203.5530v3 · doi: 10.48550/arxiv.1203.5530 · pith_short_12: VJ2M6LSBGOPW · pith_short_16: VJ2M6LSBGOPWCFTF · pith_short_8: VJ2M6LSB

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/VJ2M6LSBGOPWCFTFEEHNOSGFEK \
  | 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: aa74cf2e41339f611665210ed748c522ab6e6110b58e8c3e5cbc9670cd01a49a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c0b42d481132e32f89781bb285d038a522a5bac725364931286d8106e551cf00",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-03-25T18:45:49Z",
    "title_canon_sha256": "f9efb3c537f52dad880c90c475380c7c9f22042bb55d0c5aa6aa9c129bfa7310"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.5530",
    "kind": "arxiv",
    "version": 3
  }
}