Pith Number

pith:3GHQC4MF

pith:2009:3GHQC4MFXULKIV7RZXCFJXDY6C

not attested not anchored not stored refs pending

Mid-Infrared Spectroscopy of Optically Faint Extragalactic 70 micron Sources

C. Lonsdale (NRAO), D. Farrah (Sussex), D. Weedman (Cornell), H. Smith (UCSD), J. Houck (Cornell), M. Polletta (INAF), M. Rowan-Robinson (Imperial)

arxiv:0903.1289 v1 · 2009-03-06 · 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{3GHQC4MFXULKIV7RZXCFJXDY6C}

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	2026-05-18T02:35:00.585052Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d98f017185bd16a457f1cdc454dc78f0a5140fb570a39b4dff596dea68694646

Aliases

arxiv: 0903.1289 · arxiv_version: 0903.1289v1 · doi: 10.48550/arxiv.0903.1289 · pith_short_12: 3GHQC4MFXULK · pith_short_16: 3GHQC4MFXULKIV7R · pith_short_8: 3GHQC4MF

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/3GHQC4MFXULKIV7RZXCFJXDY6C \
  | 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: d98f017185bd16a457f1cdc454dc78f0a5140fb570a39b4dff596dea68694646

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "935dcd7092fd03b7fb503fa8e3895412f7bf2b0ae820cffb170d970e512dc7d1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-03-06T21:00:01Z",
    "title_canon_sha256": "49b85ee22ab45f6c65ecca747c6bb8a716f814b94928f4419132cdea7aa2ab3f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.1289",
    "kind": "arxiv",
    "version": 1
  }
}