Pith Number

pith:H7VYDBQU

pith:1997:H7VYDBQU2Z7Z5SB5HOADEVXSVI

not attested not anchored not stored refs pending

On the Dust Extinction in High-z Galaxies and the Case of Extremely Red Objects

Andrea Cimatti (Arcetri), Carlo Giovanardi (Arcetri), Simone Bianchi (Arcetri & Cardiff) Andrea Ferrara (Arcetri)

arxiv:astro-ph/9708197 v1 · 1997-08-21 · 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{H7VYDBQU2Z7Z5SB5HOADEVXSVI}

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	2026-05-18T01:22:58.648059Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3feb818614d67f9ec83d3b803256f2aa13414e484c402a16374a9f27c7087728

Aliases

arxiv: astro-ph/9708197 · arxiv_version: astro-ph/9708197v1 · doi: 10.48550/arxiv.astro-ph/9708197 · pith_short_12: H7VYDBQU2Z7Z · pith_short_16: H7VYDBQU2Z7Z5SB5 · pith_short_8: H7VYDBQU

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/H7VYDBQU2Z7Z5SB5HOADEVXSVI \
  | 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: 3feb818614d67f9ec83d3b803256f2aa13414e484c402a16374a9f27c7087728

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "66cbcf5a94c75d7123744e22200a81e377b3e6ac2659299562802ba4a9de1e2b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-08-21T12:30:08Z",
    "title_canon_sha256": "81c7647def055d9ee0ee134e00f9945e7eae731fa5c28fb08933ffa434af2435"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9708197",
    "kind": "arxiv",
    "version": 1
  }
}