Pith Number

pith:5V24YOVF

pith:2010:5V24YOVF7DMVGV6L6HMHJC42U5

not attested not anchored not stored refs pending

The effect of varying sound velocity on primordial curvature perturbations

Jun'ichi Yokoyama, Masahiro Nakashima, Ryo Saito, Yu-ichi Takamizu

arxiv:1009.4394 v3 · 2010-09-22 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5V24YOVF7DMVGV6L6HMHJC42U5}

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	2026-05-18T04:20:51.151167Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ed75cc3aa5f8d95357cbf1d8748b9aa74c279fec25a1fbb20e3ed83dff26b794

Aliases

arxiv: 1009.4394 · arxiv_version: 1009.4394v3 · doi: 10.48550/arxiv.1009.4394 · pith_short_12: 5V24YOVF7DMV · pith_short_16: 5V24YOVF7DMVGV6L · pith_short_8: 5V24YOVF

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/5V24YOVF7DMVGV6L6HMHJC42U5 \
  | 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: ed75cc3aa5f8d95357cbf1d8748b9aa74c279fec25a1fbb20e3ed83dff26b794

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b7a0487fb2219b50dd3e562e6e2e0b63f1db1851f795655a165aa227f9ef598b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-09-22T15:48:43Z",
    "title_canon_sha256": "b8f65948a85241d2f02453b6321bba6dd986fbd43d07e2f6a0a95af3aae769d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.4394",
    "kind": "arxiv",
    "version": 3
  }
}