Pith Number

pith:Z7KVYXEX

pith:2004:Z7KVYXEX2WKDNSVEUXZNLOFPOM

not attested not anchored not stored refs pending

The Exploration of the Unknown

J. M. Cordes (Cornell U., K. I. Kellermann (NRAO), NAIC), P. N. Wilkinson (JBO), R. D. Ekers (CSIRO), T. Joseph W. Lazio (NRL)

arxiv:astro-ph/0410225 v3 · 2004-10-08 · 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{Z7KVYXEX2WKDNSVEUXZNLOFPOM}

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	2026-07-04T16:44:56.494037Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cfd55c5c97d59436caa4a5f2d5b8af7336f58f98e7c5621e382408f3cfc3b11c

Aliases

arxiv: astro-ph/0410225 · arxiv_version: astro-ph/0410225v3 · doi: 10.48550/arxiv.astro-ph/0410225 · pith_short_12: Z7KVYXEX2WKD · pith_short_16: Z7KVYXEX2WKDNSVE · pith_short_8: Z7KVYXEX

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/Z7KVYXEX2WKDNSVEUXZNLOFPOM \
  | 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: cfd55c5c97d59436caa4a5f2d5b8af7336f58f98e7c5621e382408f3cfc3b11c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5f33fd5ab878ec23e6589eba3e84b3fbaa14b6fa4093384c7e527b0e00830956",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-10-08T10:33:00Z",
    "title_canon_sha256": "225346145e615bcaf6c84d1a3c40db11656d77d51b338dcaa5c63e75cb950c5c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0410225",
    "kind": "arxiv",
    "version": 3
  }
}