Pith Number

pith:DBYU4MRP

pith:2010:DBYU4MRP37ZY53DVGRW4F2IZDA

not attested not anchored not stored refs pending

Probing high-redshift quasars with ALMA. I. Expected observables and potential number of sources

Dominik R. G. Schleicher, Marco Spaans, Ralf S. Klessen

arxiv:1001.2118 v1 · 2010-01-13 · 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{DBYU4MRP37ZY53DVGRW4F2IZDA}

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	2026-05-18T02:09:55.099812Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18714e322fdff38eec75346dc2e9191824b0b0fb49869c79a6102ea232d49928

Aliases

arxiv: 1001.2118 · arxiv_version: 1001.2118v1 · doi: 10.48550/arxiv.1001.2118 · pith_short_12: DBYU4MRP37ZY · pith_short_16: DBYU4MRP37ZY53DV · pith_short_8: DBYU4MRP

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/DBYU4MRP37ZY53DVGRW4F2IZDA \
  | 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: 18714e322fdff38eec75346dc2e9191824b0b0fb49869c79a6102ea232d49928

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9ce6a2ebb0a8c522d3f613b217ca44f43da98e63fdbb4c84da5ed953b7f18a85",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-01-13T10:21:25Z",
    "title_canon_sha256": "1efec2f21b6fccd0b37839384fbfaa8385dc91243dd6195a256ed4c3e84ccc06"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1001.2118",
    "kind": "arxiv",
    "version": 1
  }
}