Pith Number

pith:C5MLL65W

pith:2018:C5MLL65WQZVFPEYTXOBCZM7MW6

not attested not anchored not stored refs pending

A new physical interpretation of optical and infrared variability in quasars

Aaron M. Meisner, Andrew J. Drake, Arjun Dey, Barry McKernan, Daniel Stern, Dustin Lang, Hyunsung D. Jun, K. E. Saavik Ford, Matthew Graham, Nicholas P. Ross, Roberto J. Assef

arxiv:1805.06921 v2 · 2018-05-17 · 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{C5MLL65WQZVFPEYTXOBCZM7MW6}

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	2026-05-18T00:04:39.360836Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1758b5fbb6866a579313bb822cb3ecb7b1c59c9a4baf0a0298abd1a023e1933a

Aliases

arxiv: 1805.06921 · arxiv_version: 1805.06921v2 · doi: 10.48550/arxiv.1805.06921 · pith_short_12: C5MLL65WQZVF · pith_short_16: C5MLL65WQZVFPEYT · pith_short_8: C5MLL65W

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/C5MLL65WQZVFPEYTXOBCZM7MW6 \
  | 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: 1758b5fbb6866a579313bb822cb3ecb7b1c59c9a4baf0a0298abd1a023e1933a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e8eda9ec3933d6dbafbeaff84b46031a75d981e020ff7ed619ac5527c214bfd9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-05-17T18:34:20Z",
    "title_canon_sha256": "deefa1c0cfaedd7c21da45f171a2032f9cd1110c3710215e7ff846f9d268fbda"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.06921",
    "kind": "arxiv",
    "version": 2
  }
}