Pith Number

pith:W2SYYCPJ

pith:2009:W2SYYCPJRSLMUD35GHIIZVSS6Q

not attested not anchored not stored refs pending

A population of weak metal-line absorbers surrounding the Milky Way

Alessio P.M. Fangano, Jane C. Charlton, Joseph R. Masiero, Nadya Ben Bekhti, Philipp Richter

arxiv:0901.2567 v1 · 2009-01-16 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W2SYYCPJRSLMUD35GHIIZVSS6Q}

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	2026-05-18T02:35:06.430669Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6a58c09e98c96ca0f7d31d08cd652f41852428f2ece490e4e930e726c58da07

Aliases

arxiv: 0901.2567 · arxiv_version: 0901.2567v1 · doi: 10.48550/arxiv.0901.2567 · pith_short_12: W2SYYCPJRSLM · pith_short_16: W2SYYCPJRSLMUD35 · pith_short_8: W2SYYCPJ

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/W2SYYCPJRSLMUD35GHIIZVSS6Q \
  | 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: b6a58c09e98c96ca0f7d31d08cd652f41852428f2ece490e4e930e726c58da07

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b666203a6a7f69ae068daa2afcb71d2aae97a9806b2f8cc849a1f31753cd6248",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-01-16T21:00:03Z",
    "title_canon_sha256": "f9452034e5d8411c950a70211ee31b4409b1345fc16842e72e34f9b9ae7418aa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.2567",
    "kind": "arxiv",
    "version": 1
  }
}