Pith Number

pith:3FZHNJM2

pith:2010:3FZHNJM2SJK7Q5FKNMQPXYCJ2U

not attested not anchored not stored refs pending

Sky subtraction at the Poisson limit with fibre-optic multi-object spectroscopy

Hannah Parkinson, Robert Sharp

arxiv:1007.0648 v1 · 2010-07-05 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3FZHNJM2SJK7Q5FKNMQPXYCJ2U}

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	2026-05-18T02:06:32.467601Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d97276a59a9255f874aa6b20fbe049d53a23f0174af9a63746f9ca478969b5b5

Aliases

arxiv: 1007.0648 · arxiv_version: 1007.0648v1 · doi: 10.48550/arxiv.1007.0648 · pith_short_12: 3FZHNJM2SJK7 · pith_short_16: 3FZHNJM2SJK7Q5FK · pith_short_8: 3FZHNJM2

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/3FZHNJM2SJK7Q5FKNMQPXYCJ2U \
  | 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: d97276a59a9255f874aa6b20fbe049d53a23f0174af9a63746f9ca478969b5b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cca4d4e1d4f8fef1f2532a3fa99c2dc5e4d5b9a736ad7e6a0f8f8ece0fba122b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2010-07-05T09:46:42Z",
    "title_canon_sha256": "1f462214650eb8cf30741a4be072b0b64f107bdd698653065bfead11bf2d8933"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1007.0648",
    "kind": "arxiv",
    "version": 1
  }
}