Pith Number

pith:XWADQ7B4

pith:2013:XWADQ7B4JDDYY37YLI3FMA2BNS

not attested not anchored not stored refs pending

Optimising Spectroscopic and Photometric Galaxy Surveys: Efficient Target Selection and Survey Strategy

D. Kirk, F. B. Abdalla, H. Lin, J. A. Frieman, J. Annis, O. Lahav, R. Kron, S. Jouvel

arxiv:1307.8061 v2 · 2013-07-30 · 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{XWADQ7B4JDDYY37YLI3FMA2BNS}

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	2026-05-18T01:48:32.735636Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bd80387c3c48c78c6ff85a365603416c8cf685ceb12fb8980f841c04e000ae6f

Aliases

arxiv: 1307.8061 · arxiv_version: 1307.8061v2 · doi: 10.48550/arxiv.1307.8061 · pith_short_12: XWADQ7B4JDDY · pith_short_16: XWADQ7B4JDDYY37Y · pith_short_8: XWADQ7B4

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/XWADQ7B4JDDYY37YLI3FMA2BNS \
  | 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: bd80387c3c48c78c6ff85a365603416c8cf685ceb12fb8980f841c04e000ae6f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d7551957d2e91fd5d826477371b988ebee6e7fd2c302e95c709220229d38c6c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-07-30T17:43:40Z",
    "title_canon_sha256": "cc7a6b53b973076684ea23da81f2d452de8a6c64ab9389fcdc1953e8ac309785"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.8061",
    "kind": "arxiv",
    "version": 2
  }
}