Pith Number

pith:ETL6EYGD

pith:2009:ETL6EYGD7GELMSZBMH2HWUBMGG

not attested not anchored not stored refs pending

On the abundance of gravitational arcs produced by submillimeter galaxies at radio and submm wavelengths

A. Berciano Alba, C. Fedeli

arxiv:0907.2308 v2 · 2009-07-14 · 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{ETL6EYGD7GELMSZBMH2HWUBMGG}

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	2026-05-18T02:13:03.272142Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

24d7e260c3f988b64b2161f47b502c319b953557b9520edef0aedc0d7c2ad1e8

Aliases

arxiv: 0907.2308 · arxiv_version: 0907.2308v2 · doi: 10.48550/arxiv.0907.2308 · pith_short_12: ETL6EYGD7GEL · pith_short_16: ETL6EYGD7GELMSZB · pith_short_8: ETL6EYGD

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/ETL6EYGD7GELMSZBMH2HWUBMGG \
  | 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: 24d7e260c3f988b64b2161f47b502c319b953557b9520edef0aedc0d7c2ad1e8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e1b6868e0c36d323b03a8909ca43eb8873289fdf748d877a17d4ba3d7f31289",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-07-14T08:49:06Z",
    "title_canon_sha256": "046b3a9972f298610b49e1569f6e2abe907f8c158eba651b7ba6f047deaf2d59"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.2308",
    "kind": "arxiv",
    "version": 2
  }
}