Pith Number

pith:7EFMTV2T

pith:2009:7EFMTV2T6PWETIK4MZIZ27N7WF

not attested not anchored not stored refs pending

A Spitzer Unbiased Ultradeep Spectroscopic Survey

2), (2) IPAC/Caltech, 3), (3) NHSC, (4) U. Toledo, (5) U. Wyoming, (6) Cornell, (7) IAP), B. Bertincourt (1, D. Dale (5), G. Helou (2), G. Lagache (1), H. Roussel (7) ((1) IAS, J.-D. Smith (4), J.-L. Puget (1), K. Sheth (2), M. Harwit (6), P. Appleton (2, P. Ogle (2), T. Brooke (2)

arxiv:0910.2430 v1 · 2009-10-13 · 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{7EFMTV2T6PWETIK4MZIZ27N7WF}

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	2026-05-18T02:34:19.003138Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f90ac9d753f3ec49a15c66519d7dbfb1467023240a2562b7c8358e1859ce149d

Aliases

arxiv: 0910.2430 · arxiv_version: 0910.2430v1 · doi: 10.48550/arxiv.0910.2430 · pith_short_12: 7EFMTV2T6PWE · pith_short_16: 7EFMTV2T6PWETIK4 · pith_short_8: 7EFMTV2T

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/7EFMTV2T6PWETIK4MZIZ27N7WF \
  | 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: f90ac9d753f3ec49a15c66519d7dbfb1467023240a2562b7c8358e1859ce149d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d9980d825f27b3beee75b333b0a1d429d5803f94973719b59df254f4f91cc42",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-10-13T16:17:18Z",
    "title_canon_sha256": "ba9f7f9a754bcaf10824dc77f6a1b5b8e0f21c2da94f629b9c11e12f9011e938"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.2430",
    "kind": "arxiv",
    "version": 1
  }
}