Pith Number

pith:DXBLDJHD

pith:2012:DXBLDJHD2Z4WQDSP4HXUCHRFVR

not attested not anchored not stored refs pending

The Dark Energy Spectrometer (DESpec): A Multi-Fiber Spectroscopic Upgrade of the Dark Energy Camera and Survey for the Blanco Telescope

(10) University of Pennsylvania, (11) KIPAC, (2) Fermilab, (3) Institute of Cosmology, (4) Institut de Ci\`encies de l'Espai, (5) Australian Astronomical Observatory, (6) Texas A&M University, 7), (7) University of Chicago, (8) Argonne National Laboratory, (9) Ludwig-Maximilians University, A. West (2), Barcelona, B. Flaugher (2), C. Hogan (2, D. Bacon (3), D. DePoy (6), D. Kirk (1), D. Thomas (3), E. Gaztanaga (4), F. Abdalla (1), F. Castander (4), Germany, Gravitation, H. Lin (2), H. T. Diehl (2), H. Wu (11) ((1) University College London, J. Annis (2), J. Frieman (2, J. Lawrence (5), J. Marriner (2), J. Marshall (6), J. Mohr (9), M. Colless (5), M. Eriksen (4), M. Sako (10), M. Soares-Santos (2), O. Lahav (1), Portsmouth, R. C. Nichol (3), R. Kron (2, R. Wechsler (11), S. Bridle (1), S. Jouvel (4), S. Kent (2, S. Kuhlmann (8), Spain, Stanford University), UK, W. Saunders (5)

arxiv:1209.2451 v1 · 2012-09-11 · astro-ph.CO · astro-ph.IM

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

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	2026-05-18T03:45:43.108372Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1dc2b1a4e3d679680e4fe1ef411e25ac7eb878b2690183a20269c56dd2a83196

Aliases

arxiv: 1209.2451 · arxiv_version: 1209.2451v1 · doi: 10.48550/arxiv.1209.2451 · pith_short_12: DXBLDJHD2Z4W · pith_short_16: DXBLDJHD2Z4WQDSP · pith_short_8: DXBLDJHD

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/DXBLDJHD2Z4WQDSP4HXUCHRFVR \
  | 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: 1dc2b1a4e3d679680e4fe1ef411e25ac7eb878b2690183a20269c56dd2a83196

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5296664a3b32f5d93525313ead6c8ffac0c50989dcabe215bb2ba74559d8390f",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-09-11T22:00:17Z",
    "title_canon_sha256": "cf7003ecce3e3e3c5b2bf11acc92a3649fb40946f93687a34a2d746c3a6e3f98"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.2451",
    "kind": "arxiv",
    "version": 1
  }
}