Pith Number

pith:3QXNW6MW

pith:2008:3QXNW6MWQ2LINQ4UBYSMCJH2EX

not attested not anchored not stored refs pending

Infrared Imaging of SDSS Quasars: Implications for the Quasar K correction

Julia Kennefick, Shelly Bursick

arxiv:0809.0521 v1 · 2008-09-02 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3QXNW6MWQ2LINQ4UBYSMCJH2EX}

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.

Cited by

1 paper in Pith

A new model of quasar mass evolution

Receipt and verification

First computed	2026-07-04T17:12:33.820153Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dc2edb7996869686c3940e24c124fa25db29c0d14bfea0502b5c46e290137d8f

Aliases

arxiv: 0809.0521 · arxiv_version: 0809.0521v1 · doi: 10.48550/arxiv.0809.0521 · pith_short_12: 3QXNW6MWQ2LI · pith_short_16: 3QXNW6MWQ2LINQ4U · pith_short_8: 3QXNW6MW

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/3QXNW6MWQ2LINQ4UBYSMCJH2EX \
  | 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: dc2edb7996869686c3940e24c124fa25db29c0d14bfea0502b5c46e290137d8f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d6729223b1570c7855caf470195d0ef751c91003ee7d005dd0f6bbd72bfec7a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-09-02T21:02:48Z",
    "title_canon_sha256": "0222332caeea57e4e7090011ec2fcb71931b7483abc11c858688a5d14a247569"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.0521",
    "kind": "arxiv",
    "version": 1
  }
}