Pith Number

pith:73UL7OFQ

pith:2008:73UL7OFQKZ5SRAMWZTOYQLJVCV

not attested not anchored not stored refs pending

Star formation in the hosts of high-z QSOs: Evidence from Spitzer PAH detections

D. Lutz, E. Sturm, E. Valiante, H. Netzer, L.J. Tacconi, M. Schweitzer, O. Shemmer, P. Andreani, R. Maiolino, S. Veilleux

arxiv:0805.2669 v1 · 2008-05-17 · 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{73UL7OFQKZ5SRAMWZTOYQLJVCV}

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	2026-07-04T17:10:54.694564Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fee8bfb8b0567b288196ccdd882d35154c108291ffcbfb5ac6aee3d5b797f294

Aliases

arxiv: 0805.2669 · arxiv_version: 0805.2669v1 · doi: 10.48550/arxiv.0805.2669 · pith_short_12: 73UL7OFQKZ5S · pith_short_16: 73UL7OFQKZ5SRAMW · pith_short_8: 73UL7OFQ

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/73UL7OFQKZ5SRAMWZTOYQLJVCV \
  | 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: fee8bfb8b0567b288196ccdd882d35154c108291ffcbfb5ac6aee3d5b797f294

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "01d379a23058db7c0c9c99750517bf8d966ed1c0d795c252e4934eb875deef08",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-05-17T13:30:17Z",
    "title_canon_sha256": "abb88f1c61d64bad1f0bbd0f07e9f537fcfde9a1be362c1708a5b00986c955b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0805.2669",
    "kind": "arxiv",
    "version": 1
  }
}