Pith Number

pith:FFPALKTA

pith:2004:FFPALKTAXNTKLX6LLFZLIDQXW7

not attested not anchored not stored refs pending

Q0957+561 revised: CO emission from a disk at z=1.4

A. Eckart, D. Downes, J. Martin-Pintado, M. Krips, P. Planesas, R. Neri

arxiv:astro-ph/0411138 v2 · 2004-11-05 · 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{FFPALKTAXNTKLX6LLFZLIDQXW7}

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	2026-05-18T01:07:31.960781Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

295e05aa60bb66a5dfcb5972b40e17b7d0f60864daa35c6e09db728323458af2

Aliases

arxiv: astro-ph/0411138 · arxiv_version: astro-ph/0411138v2 · doi: 10.48550/arxiv.astro-ph/0411138 · pith_short_12: FFPALKTAXNTK · pith_short_16: FFPALKTAXNTKLX6L · pith_short_8: FFPALKTA

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/FFPALKTAXNTKLX6LLFZLIDQXW7 \
  | 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: 295e05aa60bb66a5dfcb5972b40e17b7d0f60864daa35c6e09db728323458af2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f41b0973c356765b553616a8e959f1adf53d99c7f667840d283573fef04ab6c9",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-11-05T11:57:16Z",
    "title_canon_sha256": "cc387ceb45b9ac416e13967209c7d82ad40497a0866cd7b845aa578907a6a834"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0411138",
    "kind": "arxiv",
    "version": 2
  }
}