Pith Number

pith:HQK4GPU4

pith:2019:HQK4GPU4T6GLAYGH2MEXXKCSUQ

not attested not anchored not stored refs pending

Observations of the Ultraviolet-Bright Star Barnard 29 in the Globular Cluster M13 (NGC 6205)

I. N. Reid, Marcelo Miguel Miller Bertolami, Pierre Chayer, William V. Dixon

arxiv:1903.00350 v1 · 2019-03-01 · astro-ph.SR · 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{HQK4GPU4T6GLAYGH2MEXXKCSUQ}

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	2026-05-17T23:49:38.738679Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c15c33e9c9f8cb060c7d3097ba852a43e561ef3567682ef436dcf39226be587

Aliases

arxiv: 1903.00350 · arxiv_version: 1903.00350v1 · doi: 10.48550/arxiv.1903.00350 · pith_short_12: HQK4GPU4T6GL · pith_short_16: HQK4GPU4T6GLAYGH · pith_short_8: HQK4GPU4

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/HQK4GPU4T6GLAYGH2MEXXKCSUQ \
  | 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: 3c15c33e9c9f8cb060c7d3097ba852a43e561ef3567682ef436dcf39226be587

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4b918e4e842defffe0845d5a46ef59b7db1c46b1a926f1dc9f6edc4339719036",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-03-01T15:03:37Z",
    "title_canon_sha256": "a2900b522d75b9d75122732c20e1af1a76e0455f9d29d9717b0eef0801995566"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.00350",
    "kind": "arxiv",
    "version": 1
  }
}