Pith Number

pith:BKCCBRHM

pith:2009:BKCCBRHMJHZJC72IZB3G4N3XSS

not attested not anchored not stored refs pending

Photometric redshift estimation using Gaussian processes

D. G. Bonfield, F. B. Abdalla, M. Banerji, M. J. Jarvis, N. Davey, R. G. Adams, Y. Sun

arxiv:0910.4393 v2 · 2009-10-22 · astro-ph.IM · 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{BKCCBRHMJHZJC72IZB3G4N3XSS}

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	2026-05-18T02:11:12.478096Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0a8420c4ec49f2917f48c8766e37779497e7f262e18691fa96050f80358205a3

Aliases

arxiv: 0910.4393 · arxiv_version: 0910.4393v2 · doi: 10.48550/arxiv.0910.4393 · pith_short_12: BKCCBRHMJHZJ · pith_short_16: BKCCBRHMJHZJC72I · pith_short_8: BKCCBRHM

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/BKCCBRHMJHZJC72IZB3G4N3XSS \
  | 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: 0a8420c4ec49f2917f48c8766e37779497e7f262e18691fa96050f80358205a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d3fc352552781ced41f2c9484a23d89b36262f9d02b954e1cbcb2fe53f07fad",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2009-10-22T20:00:42Z",
    "title_canon_sha256": "2a1c78f6dabde15b63ae28b04f2e9fa9915c17666228ddacdf4b1f24fbe15141"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.4393",
    "kind": "arxiv",
    "version": 2
  }
}