Pith Number

pith:FFOD5UJT

pith:2016:FFOD5UJT5CHYZFFRZGCAB4KHPJ

not attested not anchored not stored refs pending

Measuring Light Echos in NGC 4051

James N. Reeves, Lance Miller, Tracey Jane Turner, Valentina Braito

arxiv:1602.05158 v2 · 2016-02-16 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FFOD5UJT5CHYZFFRZGCAB4KHPJ}

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	2026-05-18T00:48:20.177690Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

295c3ed133e88f8c94b1c98400f1477a6591e9d2b74db7a5e4533d17eb6f9308

Aliases

arxiv: 1602.05158 · arxiv_version: 1602.05158v2 · doi: 10.48550/arxiv.1602.05158 · pith_short_12: FFOD5UJT5CHY · pith_short_16: FFOD5UJT5CHYZFFR · pith_short_8: FFOD5UJT

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/FFOD5UJT5CHYZFFRZGCAB4KHPJ \
  | 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: 295c3ed133e88f8c94b1c98400f1477a6591e9d2b74db7a5e4533d17eb6f9308

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ed92d2083d6d060ad23669d29a4c338f7d1f6de855f459fbe036674706d6280",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2016-02-16T20:04:18Z",
    "title_canon_sha256": "bd497c24de5f86e5f3e06de0939471db1279863fbdc61fe27d5f9e79f4022146"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.05158",
    "kind": "arxiv",
    "version": 2
  }
}