Pith Number

pith:OB2LL5BJ

pith:2019:OB2LL5BJAZZCL4U4MDEAY36FKU

not attested not anchored not stored refs pending

New Constraints on Quasar Evolution: Broad Line Velocity Shifts over $1.5\lesssim z\lesssim 7.5 $

Richard S. Ellis, Romain A. Meyer, Sarah E. I. Bosman

arxiv:1902.04558 v2 · 2019-02-12 · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OB2LL5BJAZZCL4U4MDEAY36FKU}

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	2026-05-17T23:43:37.025301Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7074b5f429067225f29c60c80c6fc5553ec2fd174466c6f8c9282da4aa2214c5

Aliases

arxiv: 1902.04558 · arxiv_version: 1902.04558v2 · doi: 10.48550/arxiv.1902.04558 · pith_short_12: OB2LL5BJAZZC · pith_short_16: OB2LL5BJAZZCL4U4 · pith_short_8: OB2LL5BJ

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/OB2LL5BJAZZCL4U4MDEAY36FKU \
  | 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: 7074b5f429067225f29c60c80c6fc5553ec2fd174466c6f8c9282da4aa2214c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "432e6f4ff2a893dee5b7d4ddbe143063405b5a078855207cb0512db0964f4a1f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-02-12T18:59:39Z",
    "title_canon_sha256": "a7c4f217960972b7df370566891f7014a32a752e5a26e394f033a8c9f7342026"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.04558",
    "kind": "arxiv",
    "version": 2
  }
}