Pith Number

pith:FJTGZFT2

pith:1994:FJTGZFT2TU5IYPNYPAFFOACGKT

not attested not anchored not stored refs pending

ROSAT PSPC Observations of the Seyfert 1 Galaxies Ark 564, NGC 985, Kaz 163, MRK 79 and RX J 2256.6+0525

A.C. Fabian, C.S. Reynolds, K. Nandra, W. Brinkmann, W.N. Brandt

arxiv:astro-ph/9411063 v1 · 1994-11-16 · astro-ph

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

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	2026-05-18T01:40:24.153997Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a666c967a9d3a8c3db8780a57004654e1e8382ca22a9403eb1a73c2bd54cbb4

Aliases

arxiv: astro-ph/9411063 · arxiv_version: astro-ph/9411063v1 · doi: 10.48550/arxiv.astro-ph/9411063 · pith_short_12: FJTGZFT2TU5I · pith_short_16: FJTGZFT2TU5IYPNY · pith_short_8: FJTGZFT2

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/FJTGZFT2TU5IYPNYPAFFOACGKT \
  | 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: 2a666c967a9d3a8c3db8780a57004654e1e8382ca22a9403eb1a73c2bd54cbb4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dfb3db94d8ca7ead440c294935c5bd41a2305c0358da9622d27c4d8857dda794",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1994-11-16T14:02:53Z",
    "title_canon_sha256": "aecd1c1add673152d57460299a8b2a8d16b6e4c030e43262d8b9224300e11583"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9411063",
    "kind": "arxiv",
    "version": 1
  }
}