Pith Number

pith:IDD6AD6Y

pith:2008:IDD6AD6YJUS6LNNPNL4KIBQSGX

not attested not anchored not stored refs pending

The Disk Around CoKu Tau/4: Circumbinary, not Transitional

A.L. Kraus, M.J. Ireland

arxiv:0803.2044 v2 · 2008-03-13 · 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{IDD6AD6YJUS6LNNPNL4KIBQSGX}

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	2026-07-04T17:09:50.332924Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

40c7e00fd84d25e5b5af6af8a4061235d553e3fcdb52ddd1313a6cc57a34e2db

Aliases

arxiv: 0803.2044 · arxiv_version: 0803.2044v2 · doi: 10.48550/arxiv.0803.2044 · pith_short_12: IDD6AD6YJUS6 · pith_short_16: IDD6AD6YJUS6LNNP · pith_short_8: IDD6AD6Y

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/IDD6AD6YJUS6LNNPNL4KIBQSGX \
  | 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: 40c7e00fd84d25e5b5af6af8a4061235d553e3fcdb52ddd1313a6cc57a34e2db

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "26a2bbf53bb74db6e7110ce1e4d199c7077b0c1e3e201b0153bf8a2e34657bd9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-03-13T20:41:10Z",
    "title_canon_sha256": "6a46286cfc34aa20e8b43b2537519dd4547f2a2ccd2b3064ebf40f16d6192da6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0803.2044",
    "kind": "arxiv",
    "version": 2
  }
}