Pith Number

pith:6CGC63F7

pith:2015:6CGC63F7B4DYCH6TOT67BPWM2A

not attested not anchored not stored refs pending

Periodic Halpha variations in GL 581: Further evidence for an activity origin to GL 581d

Artie P. Hatzes

arxiv:1512.00878 v1 · 2015-12-02 · astro-ph.SR · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6CGC63F7B4DYCH6TOT67BPWM2A}

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	2026-05-18T01:22:32.616848Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f08c2f6cbf0f07811fd374fdf0beccd02a07c2ec82ded15402bb11cc30134a1e

Aliases

arxiv: 1512.00878 · arxiv_version: 1512.00878v1 · doi: 10.48550/arxiv.1512.00878 · pith_short_12: 6CGC63F7B4DY · pith_short_16: 6CGC63F7B4DYCH6T · pith_short_8: 6CGC63F7

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/6CGC63F7B4DYCH6TOT67BPWM2A \
  | 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: f08c2f6cbf0f07811fd374fdf0beccd02a07c2ec82ded15402bb11cc30134a1e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "65d3b72f01bf71dbf31ab2d097e739c3a82213fc1681d4c78e42fb18a7b7e53b",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-12-02T21:43:48Z",
    "title_canon_sha256": "1d3c7bdc87674634cfc363462b08dc2fb05f4f6cd87dab69f987bc5915d64a5d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.00878",
    "kind": "arxiv",
    "version": 1
  }
}