Pith Number

pith:IYOPUAUS

pith:2020:IYOPUAUS2LHZRE5DQKXMYYID26

not attested not anchored not stored refs pending

The PAU Survey: Photometric redshifts using transfer learning from simulations

A. Alarcon, B. Joachimi, C. Padilla, E. Fernandez, E. Gaztanaga, E. Sanchez, F. J. Castander, H. Hildebrandt, H. Hoekstra, I. Sevilla-Noarbe, J. Carretero, J. De Vicente, J. Garcia-Bellido, L. Cabayol, M. Eriksen, P. Tallada, R. Casas, R. Miquel

arxiv:2004.07979 v2 · 2020-04-16 · astro-ph.GA · 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{IYOPUAUS2LHZRE5DQKXMYYID26}

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	2026-07-05T01:26:12.856357Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

461cfa0292d2cf9893a382aecc6103d7acf3e2bf1174c2221a14c7c4a0e555f0

Aliases

arxiv: 2004.07979 · arxiv_version: 2004.07979v2 · doi: 10.48550/arxiv.2004.07979 · pith_short_12: IYOPUAUS2LHZ · pith_short_16: IYOPUAUS2LHZRE5D · pith_short_8: IYOPUAUS

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/IYOPUAUS2LHZRE5DQKXMYYID26 \
  | 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: 461cfa0292d2cf9893a382aecc6103d7acf3e2bf1174c2221a14c7c4a0e555f0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8e61d2d7db273e2819f62d586c3036cb1eb7fac71b8b464ee3a09f4a7afb7c2",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2020-04-16T22:33:39Z",
    "title_canon_sha256": "4fb7aeee7262d5fc89f9df7654bea26b7079418193f5c86d783d1866d1401f76"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.07979",
    "kind": "arxiv",
    "version": 2
  }
}