Pith Number

pith:F3P4XRAY

pith:2018:F3P4XRAY65Z7MSVKEZN2H2QHNS

not attested not anchored not stored refs pending

The Lyman Alpha Reference Sample IX: Revelations from deep surface photometry

Andreas Sandberg, Daniel Kunth, Erik Zackrisson, Genoveva Micheva, G\"oran \"Ostlin, Jens Melinder, Joanna S. Bridge, John M. Cannon, Lucia Guaita, Matthew Hayes

arxiv:1803.07207 v1 · 2018-03-20 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{F3P4XRAY65Z7MSVKEZN2H2QHNS}

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	2026-05-18T00:10:31.600042Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2edfcbc418f773f64aaa265ba3ea076c93385b3e803cde5e2364674f0f7d75ff

Aliases

arxiv: 1803.07207 · arxiv_version: 1803.07207v1 · doi: 10.48550/arxiv.1803.07207 · pith_short_12: F3P4XRAY65Z7 · pith_short_16: F3P4XRAY65Z7MSVK · pith_short_8: F3P4XRAY

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/F3P4XRAY65Z7MSVKEZN2H2QHNS \
  | 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: 2edfcbc418f773f64aaa265ba3ea076c93385b3e803cde5e2364674f0f7d75ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "00addab90121cbd1336480f1cbf950727f29e116181a20afdeb3b4802de8a87c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-03-20T00:58:34Z",
    "title_canon_sha256": "d8e3e700c71fc2518e4740db7efa8e9e6799f01bfaac31131bd3bc97ecdde210"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.07207",
    "kind": "arxiv",
    "version": 1
  }
}