Pith Number

pith:VT6X4UB3

pith:2009:VT6X4UB3EI5ULT2LG7DQFJJF47

not attested not anchored not stored refs pending

Evolution of the Rate and Mode of Star Formation in Galaxies since z=0.7

(2) University of Chicago, (3) Osservatorio Astronomico di Padova), Alan Dressler (1), Augustus Oemler, Bianca M. Poggianti (3) ((1) Carnegie Observatories, Jane R. Rigby (1), Jr. (1), Lei Bai (1), Michael G. Gladders (2)

arxiv:0906.1224 v1 · 2009-06-05 · astro-ph.CO · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VT6X4UB3EI5ULT2LG7DQFJJF47}

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	2026-05-18T03:48:02.538249Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

acfd7e503b223b45cf4b37c702a525e7e652da8d16769727dd6ac73affa9ffec

Aliases

arxiv: 0906.1224 · arxiv_version: 0906.1224v1 · doi: 10.48550/arxiv.0906.1224 · pith_short_12: VT6X4UB3EI5U · pith_short_16: VT6X4UB3EI5ULT2L · pith_short_8: VT6X4UB3

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/VT6X4UB3EI5ULT2LG7DQFJJF47 \
  | 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: acfd7e503b223b45cf4b37c702a525e7e652da8d16769727dd6ac73affa9ffec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9f59a1d29d12ad764ce117b735752d79687d6dda30f0880f250b925f6a3daf6a",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-06-05T22:47:30Z",
    "title_canon_sha256": "d9c7735ae7e31efd749cd6b69922f61ac40f05022a994f5989fdff4294a45665"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.1224",
    "kind": "arxiv",
    "version": 1
  }
}