Pith Number

pith:QMNBZ4GL

pith:2006:QMNBZ4GL3IRCLO7N77CFANUAZH

not attested not anchored not stored refs pending

Long term spectral variability in the Soft Gamma-ray Repeater SGR 1900+14

A. Tiengo, D. Goetz, G.L. Israel, L. Sidoli, L. Stella, M. Feroci, P. Esposito, P. Woods, R. Turolla, S. Mereghetti, S. Zane

arxiv:astro-ph/0609319 v1 · 2006-09-12 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QMNBZ4GL3IRCLO7N77CFANUAZH}

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	2026-05-18T01:40:29.710292Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

831a1cf0cbda2225bbedffc4503680c9fc5fe272fa53d31a8c4f43b739234b0a

Aliases

arxiv: astro-ph/0609319 · arxiv_version: astro-ph/0609319v1 · doi: 10.48550/arxiv.astro-ph/0609319 · pith_short_12: QMNBZ4GL3IRC · pith_short_16: QMNBZ4GL3IRCLO7N · pith_short_8: QMNBZ4GL

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/QMNBZ4GL3IRCLO7N77CFANUAZH \
  | 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: 831a1cf0cbda2225bbedffc4503680c9fc5fe272fa53d31a8c4f43b739234b0a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e5d1dfdc8df015f638e353bdd7243dc0afabc54dc3dd570b7d95a9000e4b365",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-09-12T13:13:53Z",
    "title_canon_sha256": "78c02cab0605b4c53aef2c9cc01ead3e1f631ac1c14fc98658d86aa9ba5f4a16"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0609319",
    "kind": "arxiv",
    "version": 1
  }
}