Pith Number

pith:NYSDTW6K

pith:2012:NYSDTW6KCESYQZZGPZKYTAP6PG

not attested not anchored not stored refs pending

Spitzer Observations of Young Red Quasars

Andreea Petric, Bernhard Schulz, Eilat Glikman, Henrik Spoon, Mark Lacy, Tanya Urrutia

arxiv:1208.4585 v1 · 2012-08-22 · 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{NYSDTW6KCESYQZZGPZKYTAP6PG}

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	2026-05-18T03:44:46.755746Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6e2439dbca11258867267e558981fe7985821bc298109218a40e5429e12bec86

Aliases

arxiv: 1208.4585 · arxiv_version: 1208.4585v1 · doi: 10.48550/arxiv.1208.4585 · pith_short_12: NYSDTW6KCESY · pith_short_16: NYSDTW6KCESYQZZG · pith_short_8: NYSDTW6K

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/NYSDTW6KCESYQZZGPZKYTAP6PG \
  | 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: 6e2439dbca11258867267e558981fe7985821bc298109218a40e5429e12bec86

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "538513513a88b2af85697bd2db13bc4b2b1ff4b4ae498abb23c316012545b0d2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-08-22T19:27:12Z",
    "title_canon_sha256": "6f569b5e46f1c7f53807eb9f3ef2a37c76ca99967fdcd079a6c10cd89cec3897"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.4585",
    "kind": "arxiv",
    "version": 1
  }
}