Pith Number

pith:MB7DZKPB

pith:2014:MB7DZKPBQN4MA5B5YRXG5HYJGY

not attested not anchored not stored refs pending

Fifty Years of Quasars: Physical Insights and Potential for Cosmology

A. Del Olmo, D. Dultzin, J. W. Sulentic, M. D'Onofrio, P. Marziani

arxiv:1411.6900 v1 · 2014-11-25 · astro-ph.GA · 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{MB7DZKPBQN4MA5B5YRXG5HYJGY}

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	2026-05-18T01:41:25.956275Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

607e3ca9e18378c0743dc46e6e9f09361adbf67dc36c144f7c168adffd3904fa

Aliases

arxiv: 1411.6900 · arxiv_version: 1411.6900v1 · doi: 10.48550/arxiv.1411.6900 · pith_short_12: MB7DZKPBQN4M · pith_short_16: MB7DZKPBQN4MA5B5 · pith_short_8: MB7DZKPB

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/MB7DZKPBQN4MA5B5YRXG5HYJGY \
  | 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: 607e3ca9e18378c0743dc46e6e9f09361adbf67dc36c144f7c168adffd3904fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "569768ec602f6fa36a9209d7b647696ce7c5976357c60cc6fc9ce8cb94b97683",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2014-11-25T16:02:57Z",
    "title_canon_sha256": "e1db6fabdbe087cdd8f1367ae4146a1953740f4588e43f480677ad10a2453c9a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1411.6900",
    "kind": "arxiv",
    "version": 1
  }
}