Pith Number

pith:3L27FTDB

pith:1999:3L27FTDB7EXQ3IQ25ADBXW4EXK

not attested not anchored not stored refs pending

Variation of the broad X-ray iron line in MCG-6-30-15 during a flare

A.C. Fabian, A.J. Young, C. Matsumoto, H. Inoue, K. Iwasawa

arxiv:astro-ph/9904078 v1 · 1999-04-07 · 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{3L27FTDB7EXQ3IQ25ADBXW4EXK}

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	2026-07-04T16:10:52.353646Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

daf5f2cc61f92f0da21ae8061bdb84baa04703ff15d462df25a528f21e4aa37b

Aliases

arxiv: astro-ph/9904078 · arxiv_version: astro-ph/9904078v1 · doi: 10.48550/arxiv.astro-ph/9904078 · pith_short_12: 3L27FTDB7EXQ · pith_short_16: 3L27FTDB7EXQ3IQ2 · pith_short_8: 3L27FTDB

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/3L27FTDB7EXQ3IQ25ADBXW4EXK \
  | 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: daf5f2cc61f92f0da21ae8061bdb84baa04703ff15d462df25a528f21e4aa37b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b746802a3b1f16dce819549d9840dcb4013c1c401c0ac33b067115e1c0b2e3bb",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-04-07T10:06:30Z",
    "title_canon_sha256": "d47a2f7030cd197b03b45431c5b7126db5b4613529b9683b37bdfcd624371f7c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9904078",
    "kind": "arxiv",
    "version": 1
  }
}