Pith Number

pith:QT7VDGXL

pith:2019:QT7VDGXLGCQDLPBQYF2IF6UDZ2

not attested not anchored not stored refs pending

Origin of the chromospheric three-minute oscillations in sunspot umbrae

T. Felipe

arxiv:1906.09797 v1 · 2019-06-24 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QT7VDGXLGCQDLPBQYF2IF6UDZ2}

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	2026-05-17T23:39:42.970863Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84ff519aeb30a035bc30c17482fa83cebd36ff60bb3e31f1e0d76dca93bb213d

Aliases

arxiv: 1906.09797 · arxiv_version: 1906.09797v1 · doi: 10.48550/arxiv.1906.09797 · pith_short_12: QT7VDGXLGCQD · pith_short_16: QT7VDGXLGCQDLPBQ · pith_short_8: QT7VDGXL

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/QT7VDGXLGCQDLPBQYF2IF6UDZ2 \
  | 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: 84ff519aeb30a035bc30c17482fa83cebd36ff60bb3e31f1e0d76dca93bb213d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b7f81ec120694f31666f020ad5bb82ec78f688fcff3c46b07059cdc9624f6cda",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-06-24T09:10:12Z",
    "title_canon_sha256": "aea8afca38d752a86ba5bd5b96d93930e8b3d91eca929ff7e525aecf339adf8a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.09797",
    "kind": "arxiv",
    "version": 1
  }
}