Pith Number

pith:SBBKSL4W

pith:2004:SBBKSL4WQVB2AUVAJAWQQ56QQY

not attested not anchored not stored refs pending

Polarization Observations with the Cosmic Background Imager

A. C. S. Readhead, B. S. Mason, C. Achermann, C. Dickinson, C. Pryke, C. R. Contaldi, D. Pogosyan, E. M. Leitch, J. E. Carlstrom, J. K. Cartwright, J. L. Sievers, J. May, J. M. Kovac, J. R. Bond, L. Bronfman, M. C. Shepherd, M. Pospieszalski, P. Altamirano, R. Bustos, R. Reeves, S. Casassus, S. Padin, S. T. Myers, S. Torres, T. J. Pearson, W. L. Holzapfel

arxiv:astro-ph/0409569 v2 · 2004-09-23 · 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{SBBKSL4WQVB2AUVAJAWQQ56QQY}

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	2026-07-04T14:13:46.417807Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9042a92f968543a052a0482d0877d0861758c2c03711e35fdd22e02c17ef1859

Aliases

arxiv: astro-ph/0409569 · arxiv_version: astro-ph/0409569v2 · doi: 10.48550/arxiv.astro-ph/0409569 · pith_short_12: SBBKSL4WQVB2 · pith_short_16: SBBKSL4WQVB2AUVA · pith_short_8: SBBKSL4W

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/SBBKSL4WQVB2AUVAJAWQQ56QQY \
  | 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: 9042a92f968543a052a0482d0877d0861758c2c03711e35fdd22e02c17ef1859

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "66f8445ebd7d1b89d0b07167fccb917a51c72a6030ac770c205768935652147f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-09-23T18:59:54Z",
    "title_canon_sha256": "540dcb3088535cc9d5f561709c40391bd4b0ed67b7cbcdc2aa5537647fab3d4d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0409569",
    "kind": "arxiv",
    "version": 2
  }
}