Pith Number

pith:TEMJL22G

pith:2016:TEMJL22GIXXFQY2SBPQ4TLQFVA

not attested not anchored not stored refs pending

How Similar are the Properties of Quasars with Nearly Identical Ultraviolet Spectra?

Jaya Maithil, Jessica Sutter, Michael Brotherton, Thomas Rochais, Vikram Singh, William Chick, Zhouhui Shang

arxiv:1609.08732 v1 · 2016-09-28 · 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{TEMJL22GIXXFQY2SBPQ4TLQFVA}

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	2026-05-18T01:03:42.071654Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

991895eb4645ee5863520be1c9ae05a8076ea77dcb87a51ceddd5dd5b39bf289

Aliases

arxiv: 1609.08732 · arxiv_version: 1609.08732v1 · doi: 10.48550/arxiv.1609.08732 · pith_short_12: TEMJL22GIXXF · pith_short_16: TEMJL22GIXXFQY2S · pith_short_8: TEMJL22G

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/TEMJL22GIXXFQY2SBPQ4TLQFVA \
  | 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: 991895eb4645ee5863520be1c9ae05a8076ea77dcb87a51ceddd5dd5b39bf289

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "986c6b2666fd87b73477508ff3b815a3cb510e656ae345e1c6dce19d4ac50b2a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-09-28T02:10:38Z",
    "title_canon_sha256": "a785413cc8aa3e19c12404e00266cd00835c7ed024ead6c99dd76804160089bf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.08732",
    "kind": "arxiv",
    "version": 1
  }
}