Pith Number

pith:MPL4EI4I

pith:2009:MPL4EI4IMU62M5GXDPCSA6FMDH

not attested not anchored not stored refs pending

Galaxy and Mass Assembly (GAMA): Optimal Tiling of Dense Surveys with a Multi-Object Spectrograph

Aaron Robotham, A.M. Hopkins, C.C. Popescu, C.S. Frenk, D.H. Jones, D.T. Hill, D. Thomas, E. Cameron, E. van Kampen, H.R. Parkinson, I.F. Doyle, I.K. Baldry, J.A. Peacock, J. Liske, J. Loveday, K. Kuijken, L.S. Kelvin, M. Prescott, P. Norberg, R.C. Nichol, R.G. Sharp, R.J. Tuffs, S.M. Croom, S.P. Bamford, S.P. Driver, W.J. Sutherland

arxiv:0910.5121 v2 · 2009-10-27 · astro-ph.CO · 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{MPL4EI4IMU62M5GXDPCSA6FMDH}

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	2026-05-18T02:34:12.779286Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

63d7c22388653da674d71bc52078ac19ecc0aaf3ba631bfd32172aec36cef885

Aliases

arxiv: 0910.5121 · arxiv_version: 0910.5121v2 · doi: 10.48550/arxiv.0910.5121 · pith_short_12: MPL4EI4IMU62 · pith_short_16: MPL4EI4IMU62M5GX · pith_short_8: MPL4EI4I

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/MPL4EI4IMU62M5GXDPCSA6FMDH \
  | 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: 63d7c22388653da674d71bc52078ac19ecc0aaf3ba631bfd32172aec36cef885

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "be11653dea0e3f1f0828b2a91a9fe858aa62e3ac698bdac764ff7cb7ca4428dd",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-10-27T15:07:26Z",
    "title_canon_sha256": "2945219711f0a5f4c8efab848ab8a475a753e3ae98d47ef3cd45867797e601bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.5121",
    "kind": "arxiv",
    "version": 2
  }
}