Pith Number

pith:45YMRWUK

pith:2020:45YMRWUKT2SBZ3RWHAVFDDARFQ

not attested not anchored not stored refs pending

Observational nonstationarity of AGN variability: The only way to go is down!

Jenny E. Greene, Neven Caplar, Sean D. Johnson, Theodore Pena

arxiv:2001.04471 v2 · 2020-01-13 · astro-ph.GA · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{45YMRWUKT2SBZ3RWHAVFDDARFQ}

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	2026-07-05T00:40:08.775665Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e770c8da8a9ea41cee36382a518c112c2de1e556168b6f8f7f843db38f53e24e

Aliases

arxiv: 2001.04471 · arxiv_version: 2001.04471v2 · doi: 10.48550/arxiv.2001.04471 · pith_short_12: 45YMRWUKT2SB · pith_short_16: 45YMRWUKT2SBZ3RW · pith_short_8: 45YMRWUK

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/45YMRWUKT2SBZ3RWHAVFDDARFQ \
  | 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: e770c8da8a9ea41cee36382a518c112c2de1e556168b6f8f7f843db38f53e24e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e8a0e9178701d1bd6be95d66cb61451e107fffcd6b1f4cab79d97628f89fef5a",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2020-01-13T19:00:00Z",
    "title_canon_sha256": "162c2049bd514b93da56e05aac514edfcce204af3c0413f75e0194105a613a94"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.04471",
    "kind": "arxiv",
    "version": 2
  }
}