Pith Number

pith:SIIMPAMN

pith:2009:SIIMPAMNT3W5KA7572A3M6JGRF

not attested not anchored not stored refs pending

An Imaging and Spectroscopic Study of Four Strong MgII Absorbers Revealed By GRB060418

(2) KICP/UChicago, 3), (3) UCO/Lick, (4) UC Berkeley), H.-W. Chen (2), J. S. Bloom (4) ((1) UC Santa Cruz, J. X. Prochaska (1, L. K. Pollack (1)

arxiv:0902.3661 v2 · 2009-02-20 · 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{SIIMPAMNT3W5KA7572A3M6JGRF}

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	2026-05-18T02:35:00.974423Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9210c7818d9eedd503fdfe81b67926897ca5ad7260c622d3fd21925ebfbaa54d

Aliases

arxiv: 0902.3661 · arxiv_version: 0902.3661v2 · doi: 10.48550/arxiv.0902.3661 · pith_short_12: SIIMPAMNT3W5 · pith_short_16: SIIMPAMNT3W5KA75 · pith_short_8: SIIMPAMN

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/SIIMPAMNT3W5KA7572A3M6JGRF \
  | 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: 9210c7818d9eedd503fdfe81b67926897ca5ad7260c622d3fd21925ebfbaa54d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "271e195c22d1e2bbb6a574e5a98372de9b082b52112cc7052b6f56de21b97bc1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-02-20T21:00:53Z",
    "title_canon_sha256": "2040de32cea94b434987b4282ddcc7115e9ee92dcaf87b62289cf133a8dc1baa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.3661",
    "kind": "arxiv",
    "version": 2
  }
}