Pith Number

pith:IOISGO27

pith:2009:IOISGO27KLMNY2AZRHV6BVCVLV

not attested not anchored not stored refs pending

Spitzer-IRS Study of the Antennae Galaxies NGC 4038/39

B. Groves, B.R. Brandl, D.G. Whelan, J.D. Smith, Jr., J.R. Houck, L. Armus, L. Snijders, M. den Brok, P. van der Werf, R.C. Kennicutt, V. Charmandaris

arxiv:0905.1058 v1 · 2009-05-07 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IOISGO27KLMNY2AZRHV6BVCVLV}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T03:48:02.634647Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4391233b5f52d8dc681989ebe0d4555d5470af071b711388adbf76c192848077

Aliases

arxiv: 0905.1058 · arxiv_version: 0905.1058v1 · doi: 10.48550/arxiv.0905.1058 · pith_short_12: IOISGO27KLMN · pith_short_16: IOISGO27KLMNY2AZ · pith_short_8: IOISGO27

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/IOISGO27KLMNY2AZRHV6BVCVLV \
  | 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: 4391233b5f52d8dc681989ebe0d4555d5470af071b711388adbf76c192848077

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9cb1c6650d2fb575e0fdea1283f1eba6f58c3fb7fd2ce9f6cdccc63985ce7c88",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-05-07T15:57:07Z",
    "title_canon_sha256": "e4e054b548dd62fbca8191105927f59aa4d19f33aa365d81f3f4b56bd4edd908"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.1058",
    "kind": "arxiv",
    "version": 1
  }
}