Pith Number

pith:KSKXYUWR

pith:2004:KSKXYUWRAC4F7NKN5OHUK52G6Q

not attested not anchored not stored refs pending

The Third VLBA Calibrator Survey

ASC LPI), D. Gordon (Raytheon/NASA GSFC), E. Fomalont (NRAO), Inc./NASA GSFC), L. Petrov (NVI, Y. Y. Kovalev (NRAO

arxiv:astro-ph/0409698 v2 · 2004-09-28 · 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{KSKXYUWRAC4F7NKN5OHUK52G6Q}

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	2026-05-18T04:18:14.418940Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

54957c52d100b85fb54deb8f457746f40ea828c0f5c79b31e372a8650b41be74

Aliases

arxiv: astro-ph/0409698 · arxiv_version: astro-ph/0409698v2 · doi: 10.48550/arxiv.astro-ph/0409698 · pith_short_12: KSKXYUWRAC4F · pith_short_16: KSKXYUWRAC4F7NKN · pith_short_8: KSKXYUWR

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/KSKXYUWRAC4F7NKN5OHUK52G6Q \
  | 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: 54957c52d100b85fb54deb8f457746f40ea828c0f5c79b31e372a8650b41be74

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3fbd729361183f4ad346dd3a9656b218041f3beb8729d245727affdddd209d99",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-09-28T19:56:01Z",
    "title_canon_sha256": "7f0f1cace5b5dc146c1106c25da0974e3a0d5b574e1898d30a511b6226795d0d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0409698",
    "kind": "arxiv",
    "version": 2
  }
}