Pith Number

pith:NTCY6MYU

pith:2004:NTCY6MYUOPHIKGFWWQPJMFS5FO

not attested not anchored not stored refs pending

Fundamental stellar parameters

M. Wittkowski

arxiv:astro-ph/0412519 v1 · 2004-12-20 · 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{NTCY6MYUOPHIKGFWWQPJMFS5FO}

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	2026-07-04T14:13:59.261204Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6cc58f331473ce8518b6b41e96165d2ba7210e8ec9edfec0acde61d13dd7804e

Aliases

arxiv: astro-ph/0412519 · arxiv_version: astro-ph/0412519v1 · doi: 10.48550/arxiv.astro-ph/0412519 · pith_short_12: NTCY6MYUOPHI · pith_short_16: NTCY6MYUOPHIKGFW · pith_short_8: NTCY6MYU

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/NTCY6MYUOPHIKGFWWQPJMFS5FO \
  | 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: 6cc58f331473ce8518b6b41e96165d2ba7210e8ec9edfec0acde61d13dd7804e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "df9af035a40d288271a725b4ae7ff7fab37b80bfa1259c3dd93fb68308bc5f2c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-12-20T13:40:54Z",
    "title_canon_sha256": "43d0130e9d6d175adf4068c8ba0e57e88bb04c2068a05ff6fb3ba7afe1ce4ae1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0412519",
    "kind": "arxiv",
    "version": 1
  }
}