Pith Number

pith:JB5O4L63

pith:2013:JB5O4L63RYYMMFSUTLQP2MR7MS

not attested not anchored not stored refs pending

Spectral variability of classical T Tauri stars accreting in an unstable regime

Marina M. Romanova, Ryuichi Kurosawa

arxiv:1301.0641 v2 · 2013-01-03 · 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{JB5O4L63RYYMMFSUTLQP2MR7MS}

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	2026-05-18T01:52:21.702090Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

487aee2fdb8e30c616549ae0fd323f64b22fcc754db7719171eb00b0d77aa641

Aliases

arxiv: 1301.0641 · arxiv_version: 1301.0641v2 · doi: 10.48550/arxiv.1301.0641 · pith_short_12: JB5O4L63RYYM · pith_short_16: JB5O4L63RYYMMFSU · pith_short_8: JB5O4L63

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/JB5O4L63RYYMMFSUTLQP2MR7MS \
  | 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: 487aee2fdb8e30c616549ae0fd323f64b22fcc754db7719171eb00b0d77aa641

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "886ed341ba4c558276f962e937c05d1266becf8382ab859c503a1bfbabfd8350",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-01-03T22:18:20Z",
    "title_canon_sha256": "f1fe8ef8cc82433afb0245ae76f8f7456c8a377a25ed3142bf01ae5e303099ef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.0641",
    "kind": "arxiv",
    "version": 2
  }
}