Pith Number

pith:FXRZEOJD

pith:2001:FXRZEOJDCHMNQ5BFPGL7GB6V4O

not attested not anchored not stored refs pending

Multiwavelength Monitoring of the Narrow-Line Seyfert 1 Galaxy Akn 564. III. Optical Observations and the Optical--UV--X-ray Connection

A.V.Filippenko, B.M.Peterson, B.W.Peterson, C.J.Taylor, C.M.Gaskell, E.A.Sergeeva, E.Detsis, E.S.Klimek, G.M.Stirpe, H.Negoro, H.Netzer, I.Papadakis, I.Papamastorakis, K.A.Crowley, K.S.Rumstay, K.von Braun, M.E.Hiller, M.Gliozzi, M.H.Lannon, M.Vestergaard, O.Shemmer, P.Martini, P.Romano, P.Uttley, R.Bertram, R.M.Wagner, R.R.Treffers, R.W.Pogge, S.Collier, S.G.Sergeev, S.Kaspi, S.Mathur, T.A.George, T.J.Turner, T.L.Jewell, V.I.Pronik, W.Brinkmann, W.Li, Z.Zheng

arxiv:astro-ph/0107075 v1 · 2001-07-04 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FXRZEOJDCHMNQ5BFPGL7GB6V4O}

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	2026-07-04T16:23:39.356914Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2de392392311d8d874257997f307d5e381d3fb7055726097e27cd03a4031753b

Aliases

arxiv: astro-ph/0107075 · arxiv_version: astro-ph/0107075v1 · doi: 10.48550/arxiv.astro-ph/0107075 · pith_short_12: FXRZEOJDCHMN · pith_short_16: FXRZEOJDCHMNQ5BF · pith_short_8: FXRZEOJD

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/FXRZEOJDCHMNQ5BFPGL7GB6V4O \
  | 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: 2de392392311d8d874257997f307d5e381d3fb7055726097e27cd03a4031753b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d7fd431385b61a260b96229a960172d98d96f53eebe140c59ed28abe93cdee4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-07-04T14:00:11Z",
    "title_canon_sha256": "d475c67e5f7dfe01ea952db1dadfb4c40b65def8c06ae66b559e8cf8db5bb86f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0107075",
    "kind": "arxiv",
    "version": 1
  }
}