Pith Number

pith:C3U5OYHQ

pith:2005:C3U5OYHQZV7N3QQJWHTOFSK7VE

not attested not anchored not stored refs pending

Constraints on the sound speed of dark energy

Steen Hannestad (University of Aarhus)

arxiv:astro-ph/0504017 v1 · 2005-04-01 · astro-ph · hep-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{C3U5OYHQZV7N3QQJWHTOFSK7VE}

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.

Cited by

1 paper in Pith

Testing Planck 2020 and DESI data on wCDM Models

Receipt and verification

First computed	2026-07-04T16:51:50.552309Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

16e9d760f0cd7eddc209b1e6e2c95fa9392b7f9f4f49ef317de114ff3642d21e

Aliases

arxiv: astro-ph/0504017 · arxiv_version: astro-ph/0504017v1 · doi: 10.48550/arxiv.astro-ph/0504017 · pith_short_12: C3U5OYHQZV7N · pith_short_16: C3U5OYHQZV7N3QQJ · pith_short_8: C3U5OYHQ

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/C3U5OYHQZV7N3QQJWHTOFSK7VE \
  | 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: 16e9d760f0cd7eddc209b1e6e2c95fa9392b7f9f4f49ef317de114ff3642d21e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bf1bed1f0a578e12ebd497e074122182c83a3bc8f1ed6f4327e712ebd02776d7",
    "cross_cats_sorted": [
      "hep-ph"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-04-01T09:05:42Z",
    "title_canon_sha256": "e624516de2f16e4452ea90c812a77087f74f6e4e904e3464290fc2f247d67be7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0504017",
    "kind": "arxiv",
    "version": 1
  }
}