Pith Number

pith:TKSA3PAE

pith:2020:TKSA3PAETHUGOH2FM7Q4CFEZRG

not attested not anchored not stored refs pending

The April-June 2020 super-outburst of OJ 287 and its long-term multiwavelength light curve with Swift: binary supermassive black hole and jet activity

A. Gopakumar, D. Grupe, J.L. Gomez, L. Dey, M.J. Valtonen, M.L. Parker, S. Komossa

arxiv:2008.01826 v1 · 2020-08-04 · astro-ph.HE · 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{TKSA3PAETHUGOH2FM7Q4CFEZRG}

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	2026-07-05T01:24:55.130669Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9aa40dbc0499e8671f4567e1c1149989a911be6c54eec5cad3bdf10633167906

Aliases

arxiv: 2008.01826 · arxiv_version: 2008.01826v1 · doi: 10.48550/arxiv.2008.01826 · pith_short_12: TKSA3PAETHUG · pith_short_16: TKSA3PAETHUGOH2F · pith_short_8: TKSA3PAE

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/TKSA3PAETHUGOH2FM7Q4CFEZRG \
  | 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: 9aa40dbc0499e8671f4567e1c1149989a911be6c54eec5cad3bdf10633167906

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a7191e0408afe0068549a45ac917139929738812caa372a6d630b3bfbc00a36",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2020-08-04T20:59:40Z",
    "title_canon_sha256": "0cbd5e8cfd543f3ffaa0a7aa117c4e4ca4f1b16fafed567ecf0c58cd21cc4f3c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2008.01826",
    "kind": "arxiv",
    "version": 1
  }
}