Pith Number

pith:MK2IYII5

pith:1998:MK2IYII5YAJUSERBWZ2YHOGLOQ

not attested not anchored not stored refs pending

The HST Key Project on the Extragalactic Distance Scale XIV. The Cepheids in NGC 1365

A. Turner, B. F. Madore, B. K. Gibson, D. Kelson, D. Rawson, F. Bresolin, G. D. Illingworth, H. Ford, J. A. Graham, J. G. Hoessel, J. Huchra, Jr., J. R. Mould, L. Ferrarese, L. Macri, M. Han, N. A. Silbermann, P. B. Stetson, P. Harding, R. C. Kennicutt, R. J. Hill, R. Phelps, S. M. G. Hughes, S. Sakai, W. L. Freedman

arxiv:astro-ph/9806017 v1 · 1998-06-01 · 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	2026-05-18T03:47:42.587212Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

62b48c211dc013491221b67583b8cb74140d9e2ad4f5c1f239824ea0dbd55e67

Aliases

arxiv: astro-ph/9806017 · arxiv_version: astro-ph/9806017v1 · doi: 10.48550/arxiv.astro-ph/9806017 · pith_short_12: MK2IYII5YAJU · pith_short_16: MK2IYII5YAJUSERB · pith_short_8: MK2IYII5

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/MK2IYII5YAJUSERBWZ2YHOGLOQ \
  | 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: 62b48c211dc013491221b67583b8cb74140d9e2ad4f5c1f239824ea0dbd55e67

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ba1b106cc28d911b92b31e66511f432d68b5d9246b1cfe604d8ba0af6e54d28b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-06-01T19:04:20Z",
    "title_canon_sha256": "fe4fbd7f3e4520cef2199baf76c4932d0949140c9d55a296fa3cfa52fc8325b3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9806017",
    "kind": "arxiv",
    "version": 1
  }
}