Pith Number

pith:JWHMEX24

pith:2017:JWHMEX24TJ632MC24BKXS6FGRW

not attested not anchored not stored refs pending

An Active Galactic Nucleus Caught in the Act of Turning Off and On

Daniel Stern, David Pooley, Fiona A. Harrison, Francisco M\"uller-S\'anchez, Jenny E. Greene, Julia M. Comerford, Rebecca Nevin, R. Scott Barrows

arxiv:1710.00825 v1 · 2017-10-02 · astro-ph.GA · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JWHMEX24TJ632MC24BKXS6FGRW}

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	2026-05-18T00:30:40.921285Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4d8ec25f5c9a7dbd305ae0557978a68d9c1e4fedee8f52e19d890b93f738c270

Aliases

arxiv: 1710.00825 · arxiv_version: 1710.00825v1 · doi: 10.48550/arxiv.1710.00825 · pith_short_12: JWHMEX24TJ63 · pith_short_16: JWHMEX24TJ632MC2 · pith_short_8: JWHMEX24

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/JWHMEX24TJ632MC24BKXS6FGRW \
  | 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: 4d8ec25f5c9a7dbd305ae0557978a68d9c1e4fedee8f52e19d890b93f738c270

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "53d981d0a35bc4739a49f0112543dae25ac63537220d742c639777470c640bec",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-10-02T18:00:01Z",
    "title_canon_sha256": "0dd5d2215e87faceca371762ca4cf7723a856e562d096030a263bc7a0a014409"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.00825",
    "kind": "arxiv",
    "version": 1
  }
}