Pith Number

pith:Y2Q4EUIA

pith:2003:Y2Q4EUIA2ONH4QZNQZW4KAQMJI

not attested not anchored not stored refs pending

Weighting CMB and Galactic synchrotron polarisation

Carlo Baccigalupi

arxiv:astro-ph/0305415 v1 · 2003-05-21 · 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{Y2Q4EUIA2ONH4QZNQZW4KAQMJI}

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	2026-05-18T01:40:38.861084Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6a1c25100d39a7e432d866dc5020c4a3b9884c84f7a582b0df92be47762731e

Aliases

arxiv: astro-ph/0305415 · arxiv_version: astro-ph/0305415v1 · doi: 10.48550/arxiv.astro-ph/0305415 · pith_short_12: Y2Q4EUIA2ONH · pith_short_16: Y2Q4EUIA2ONH4QZN · pith_short_8: Y2Q4EUIA

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/Y2Q4EUIA2ONH4QZNQZW4KAQMJI \
  | 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: c6a1c25100d39a7e432d866dc5020c4a3b9884c84f7a582b0df92be47762731e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "21c7ff11aee0bc49c6dbf5eff534d0d21204bf2b87f52746d626900377efde43",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-05-21T20:50:02Z",
    "title_canon_sha256": "dedd5b2ff1a878a867ec565fe7fcebd8220d61bf40d9a3dde23bcf01e781c2df"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0305415",
    "kind": "arxiv",
    "version": 1
  }
}