Pith Number

pith:ENTF7IDS

pith:1997:ENTF7IDS2OGY7CNIBWJLP32GOI

not attested not anchored not stored refs pending

Evolution of Small Scale Cosmological Baryon Perturbations and Matter Transfer Functions

Humitaka Sato, Kazuhiro Yamamoto, Naoshi Sugiyama

arxiv:astro-ph/9709247 v1 · 1997-09-25 · 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{ENTF7IDS2OGY7CNIBWJLP32GOI}

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	2026-07-04T16:03:15.637995Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23665fa072d38d8f89a80d92b7ef46720ab9b00e22317884b959d049be8024a5

Aliases

arxiv: astro-ph/9709247 · arxiv_version: astro-ph/9709247v1 · doi: 10.48550/arxiv.astro-ph/9709247 · pith_short_12: ENTF7IDS2OGY · pith_short_16: ENTF7IDS2OGY7CNI · pith_short_8: ENTF7IDS

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/ENTF7IDS2OGY7CNIBWJLP32GOI \
  | 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: 23665fa072d38d8f89a80d92b7ef46720ab9b00e22317884b959d049be8024a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "75b815fd46d1cbd989934454b16f5f4422a0938071d527579d9cc4ba3f8e5fe1",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-09-25T11:46:34Z",
    "title_canon_sha256": "a847b029444e6c09dd472c30a5d6954ba21a61f703140a01edd549fcb657cd66"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9709247",
    "kind": "arxiv",
    "version": 1
  }
}