Pith Number

pith:J2BNNATH

pith:2017:J2BNNATHVL2NCGGR43CVUW5SMS

not attested not anchored not stored refs pending

A measurement of the z = 0 UV background from H$\alpha$ fluorescence

Francesco Haardt, Matteo Fossati, Michele Fumagalli (Durham University), Piero Madau, Sebastiano Cantalupo, Simon L. Morris, Tom Theuns

arxiv:1702.04726 v2 · 2017-02-15 · 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{J2BNNATHVL2NCGGR43CVUW5SMS}

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	2026-05-18T00:49:31.402590Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4e82d68267aaf4d118d1e6c55a5bb264b558a1c49203a103b4d19395c8c479e1

Aliases

arxiv: 1702.04726 · arxiv_version: 1702.04726v2 · doi: 10.48550/arxiv.1702.04726 · pith_short_12: J2BNNATHVL2N · pith_short_16: J2BNNATHVL2NCGGR · pith_short_8: J2BNNATH

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/J2BNNATHVL2NCGGR43CVUW5SMS \
  | 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: 4e82d68267aaf4d118d1e6c55a5bb264b558a1c49203a103b4d19395c8c479e1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ee0363e312f9e5ace3f7684fe484295690447877cc2867b689386dc30f220c2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-02-15T19:00:01Z",
    "title_canon_sha256": "05284bb15e0e7e4da948e330efb518a72ea3acd7ec663b096b99555f0cdc98e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.04726",
    "kind": "arxiv",
    "version": 2
  }
}