Pith Number

pith:3F4XMDUP

pith:2009:3F4XMDUPLINB5Y4GGO7CB7VA5N

not attested not anchored not stored refs pending

Near-infrared follow-up to the May 2008 activation of SGR 1627-41

A. de Ugarte Postigo, A.J. Castro-Tirado, D.E.A. Nuernberger, J. Gorosabel, P. D'Avanzo, S. Covino

arxiv:0901.4100 v1 · 2009-01-26 · astro-ph.HE · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3F4XMDUPLINB5Y4GGO7CB7VA5N}

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	2026-05-18T02:14:55.806270Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d979760e8f5a1a1ee38633be20fea0eb4574233559dba8f50cdefea4dcb09b16

Aliases

arxiv: 0901.4100 · arxiv_version: 0901.4100v1 · doi: 10.48550/arxiv.0901.4100 · pith_short_12: 3F4XMDUPLINB · pith_short_16: 3F4XMDUPLINB5Y4G · pith_short_8: 3F4XMDUP

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/3F4XMDUPLINB5Y4GGO7CB7VA5N \
  | 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: d979760e8f5a1a1ee38633be20fea0eb4574233559dba8f50cdefea4dcb09b16

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8433493ca70f01573b0b724119589eb5d46d4ec1eecbb6cd7bc5bfae131bec48",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-01-26T21:00:06Z",
    "title_canon_sha256": "4333dc1297ab7f13bad5410e4aee0d815c9f4cd64fcdf0c2504b676208ec72d9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.4100",
    "kind": "arxiv",
    "version": 1
  }
}