Pith Number

pith:7XMDAEGZ

pith:2000:7XMDAEGZMGNSAM4EWHACMD6K6J

not attested not anchored not stored refs pending

Saving Astronomical Treasures

Milcho Tsvetkov, Noah Brosch, Peter Kroll, Rene Hudec

arxiv:astro-ph/0010027 v1 · 2000-10-02 · 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{7XMDAEGZMGNSAM4EWHACMD6K6J}

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	2026-07-04T14:10:46.105270Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fdd83010d9619b203384b1c0260fcaf2692f0d9a98faff20134a111786950782

Aliases

arxiv: astro-ph/0010027 · arxiv_version: astro-ph/0010027v1 · doi: 10.48550/arxiv.astro-ph/0010027 · pith_short_12: 7XMDAEGZMGNS · pith_short_16: 7XMDAEGZMGNSAM4E · pith_short_8: 7XMDAEGZ

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/7XMDAEGZMGNSAM4EWHACMD6K6J \
  | 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: fdd83010d9619b203384b1c0260fcaf2692f0d9a98faff20134a111786950782

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4c0db41f4cb139cab77e191cb5665cfdb37f4a1c988dc0c65d0e7064a61a71a5",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-10-02T12:08:37Z",
    "title_canon_sha256": "e45480b76b7d8bbbccc9fc8c2bbc758f0f90035873a54b89d0bb5b1be7df2a67"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0010027",
    "kind": "arxiv",
    "version": 1
  }
}