Pith Number

pith:KPMMEKAB

pith:2000:KPMMEKAB3KBWVUKINLWVLGE3UE

not attested not anchored not stored refs pending

Extended Quintessence: imprints on the cosmic microwave background spectra

Carlo Baccigalupi, Francesca Perrotta, Sabino Matarrese

arxiv:astro-ph/0002268 v1 · 2000-02-12 · 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{KPMMEKAB3KBWVUKINLWVLGE3UE}

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	2026-05-18T01:00:31.929366Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

53d8c22801da836ad1486aed55989ba13bbabfed1f14955d3c1f5ff4b79de1e6

Aliases

arxiv: astro-ph/0002268 · arxiv_version: astro-ph/0002268v1 · doi: 10.48550/arxiv.astro-ph/0002268 · pith_short_12: KPMMEKAB3KBW · pith_short_16: KPMMEKAB3KBWVUKI · pith_short_8: KPMMEKAB

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/KPMMEKAB3KBWVUKINLWVLGE3UE \
  | 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: 53d8c22801da836ad1486aed55989ba13bbabfed1f14955d3c1f5ff4b79de1e6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8b67b0b4a3d9a5ed6a3609e0a5648eea7ff0d5cb7b5855123da9d8f8bc62baa9",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-02-12T16:52:03Z",
    "title_canon_sha256": "6720adef55a1c32e6c059c5a3f53b686f3e84ca4ba7ec9a319e825bbc18ac81b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0002268",
    "kind": "arxiv",
    "version": 1
  }
}