Pith Number

pith:NFNLAJAM

pith:2011:NFNLAJAM4T54XNKWGNJ4FVQ4GN

not attested not anchored not stored refs pending

Constraining Dynamical Dark Energy Models through the Abundance of High-Redshift Supermassive Black Holes

Alessandra Lamastra, Cinzia Di Porto, Fabrizio Fiore, Luca Amendola, Nicola Menci

arxiv:1111.3800 v1 · 2011-11-16 · 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{NFNLAJAM4T54XNKWGNJ4FVQ4GN}

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	2026-05-18T01:59:32.392912Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

695ab0240ce4fbcbb5563353c2d61c3362f386beb94c6722cca424998868bfde

Aliases

arxiv: 1111.3800 · arxiv_version: 1111.3800v1 · doi: 10.48550/arxiv.1111.3800 · pith_short_12: NFNLAJAM4T54 · pith_short_16: NFNLAJAM4T54XNKW · pith_short_8: NFNLAJAM

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/NFNLAJAM4T54XNKWGNJ4FVQ4GN \
  | 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: 695ab0240ce4fbcbb5563353c2d61c3362f386beb94c6722cca424998868bfde

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a4eea15c03154613f5ecad28415a465e0ade753b234e20687946a33165b2784c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-11-16T13:39:17Z",
    "title_canon_sha256": "3790f40ececdf8e25a5917668a1a3a50f4e387ed5f531fbeda586ea994355e61"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.3800",
    "kind": "arxiv",
    "version": 1
  }
}