Pith Number

pith:6W5YAMSE

pith:2019:6W5YAMSE47EVZ5E64GQDZVHNAL

not attested not anchored not stored refs pending

Representation learning for automated spectroscopic redshift estimation

Bruno Moraes, Filipe Abdalla, Florent Sureau, J\'er\^ome Bobin, Joana Frontera-Pons

arxiv:1903.04949 v1 · 2019-03-12 · 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{6W5YAMSE47EVZ5E64GQDZVHNAL}

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	2026-05-17T23:46:12.046170Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f5bb803244e7c95cf49ee1a03cd4ed02c7a4800831ba933a196654e0c058dd1d

Aliases

arxiv: 1903.04949 · arxiv_version: 1903.04949v1 · doi: 10.48550/arxiv.1903.04949 · pith_short_12: 6W5YAMSE47EV · pith_short_16: 6W5YAMSE47EVZ5E6 · pith_short_8: 6W5YAMSE

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/6W5YAMSE47EVZ5E64GQDZVHNAL \
  | 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: f5bb803244e7c95cf49ee1a03cd4ed02c7a4800831ba933a196654e0c058dd1d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8555cebf6b32e7de72f8e83ef2f83f9d09d753ebfac792d64942c9657b5ea478",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-03-12T14:28:22Z",
    "title_canon_sha256": "213fbddaa0960ae1431e5c132e3f831daf2b1b4a775f395ece243d66e7bacab9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.04949",
    "kind": "arxiv",
    "version": 1
  }
}