Pith Number

pith:RFJPRFYT

pith:2000:RFJPRFYTE6TMU646NJIJJGSSZK

not attested not anchored not stored refs pending

On the Nature of Andromeda IV

A. M. N. Ferguson (IoA, Cambridge), J. S. Gallagher (UWisc), R. F. G. Wyse (JHU)

arxiv:astro-ph/0005015 v1 · 2000-04-30 · 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{RFJPRFYTE6TMU646NJIJJGSSZK}

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	2026-07-04T16:16:22.568882Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8952f8971327a6ca7b9e6a50949a52ca9f8b3b8e914ff368826efe209bc03f1f

Aliases

arxiv: astro-ph/0005015 · arxiv_version: astro-ph/0005015v1 · doi: 10.48550/arxiv.astro-ph/0005015 · pith_short_12: RFJPRFYTE6TM · pith_short_16: RFJPRFYTE6TMU646 · pith_short_8: RFJPRFYT

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/RFJPRFYTE6TMU646NJIJJGSSZK \
  | 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: 8952f8971327a6ca7b9e6a50949a52ca9f8b3b8e914ff368826efe209bc03f1f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "91062ee4b67b607e87c2e0774e3e54e40cdce9f663b6c70c891f7cca2e90656e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-04-30T19:54:25Z",
    "title_canon_sha256": "e3067b97e8cb66fa77267e5de854e5b6488fdb4e04e5eac27dfc92ccf9a777c4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0005015",
    "kind": "arxiv",
    "version": 1
  }
}