Pith Number

pith:OSTP4XQS

pith:2007:OSTP4XQSOCAZFDZ7AZNORUW2TM

not attested not anchored not stored refs pending

Baryonic Acoustic Oscillations in 21cm Emission: A Probe of Dark Energy out to High Redshifts

Abraham Loeb, Paul Geil, Stuart Wyithe

arxiv:0709.2955 v1 · 2007-09-19 · 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{OSTP4XQSOCAZFDZ7AZNORUW2TM}

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	2026-05-18T02:16:11.157048Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

74a6fe5e127081928f3f065ae8d2da9b28f2ab5fa9c7c69b79bf8c385e53cd2d

Aliases

arxiv: 0709.2955 · arxiv_version: 0709.2955v1 · doi: 10.48550/arxiv.0709.2955 · pith_short_12: OSTP4XQSOCAZ · pith_short_16: OSTP4XQSOCAZFDZ7 · pith_short_8: OSTP4XQS

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/OSTP4XQSOCAZFDZ7AZNORUW2TM \
  | 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: 74a6fe5e127081928f3f065ae8d2da9b28f2ab5fa9c7c69b79bf8c385e53cd2d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f24ecd9b872aacb669020c2ac6034fa49082792090c2aa4e9d9eba3b8e5a595b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-09-19T05:32:47Z",
    "title_canon_sha256": "9feec04282753072771e78092bc386a62737e2edf17254ab754de4147933a7fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0709.2955",
    "kind": "arxiv",
    "version": 1
  }
}