Pith Number

pith:X4J7QZ2Y

pith:2008:X4J7QZ2YBGLRGQF5OXQFHJGTI7

not attested not anchored not stored refs pending

Time Variability of the Neutral Iron Lines from the Sgr B2 Region and its Implication of a Past Outburst of Sgr A$^*$

Hironori Matsumoto, Katsuji Koyama, Takeshi Go Tsuru, Tatsuya Inui

arxiv:0803.1528 v1 · 2008-03-11 · 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{X4J7QZ2YBGLRGQF5OXQFHJGTI7}

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	2026-07-04T15:10:09.731697Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bf13f8675809971340bd75e053a4d347cb664212f71e1a8b29daf1eefd3aeed5

Aliases

arxiv: 0803.1528 · arxiv_version: 0803.1528v1 · doi: 10.48550/arxiv.0803.1528 · pith_short_12: X4J7QZ2YBGLR · pith_short_16: X4J7QZ2YBGLRGQF5 · pith_short_8: X4J7QZ2Y

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/X4J7QZ2YBGLRGQF5OXQFHJGTI7 \
  | 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: bf13f8675809971340bd75e053a4d347cb664212f71e1a8b29daf1eefd3aeed5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "060d7dbe3e39452ea4285bdfdaef9ad9e5bf765a767b598ee30fefe2181a3394",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-03-11T06:57:54Z",
    "title_canon_sha256": "baf43100c0317d70c0725f61c7b9c5e51391af43cad8dad3635b7a06ce1e5c38"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0803.1528",
    "kind": "arxiv",
    "version": 1
  }
}