Pith Number

pith:Z6EVDATW

pith:2008:Z6EVDATWHQSPI6Q4EQCPFY22E5

not attested not anchored not stored refs pending

Discovery of superstrong, fading, iron line emission and double-peaked Balmer lines of the galaxy SDSSJ0952+2143 - the light echo of a huge flare

D. Xu, H. Lu, H. Shan, H. Zhou, J. Ge, J. Greiner, M. Ajello, M. Salvato, R. Saxton, S. Komossa, T. Wang, W. Yuan

arxiv:0804.2670 v1 · 2008-04-16 · 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{Z6EVDATWHQSPI6Q4EQCPFY22E5}

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	2026-05-18T04:36:41.331094Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cf895182763c24f47a1c2404f2e35a2771e8eb69a51765f2dce291c088a632ab

Aliases

arxiv: 0804.2670 · arxiv_version: 0804.2670v1 · doi: 10.48550/arxiv.0804.2670 · pith_short_12: Z6EVDATWHQSP · pith_short_16: Z6EVDATWHQSPI6Q4 · pith_short_8: Z6EVDATW

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/Z6EVDATWHQSPI6Q4EQCPFY22E5 \
  | 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: cf895182763c24f47a1c2404f2e35a2771e8eb69a51765f2dce291c088a632ab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "716bf6276692b5b70e3811c140afc30a9b21b06f561fc6ea1cfca2d963571e52",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-04-16T19:56:26Z",
    "title_canon_sha256": "8d18a4a66b5243f6b5a2fcb77d7a85972fb0a29b01c9627dda02b2e41f42853d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0804.2670",
    "kind": "arxiv",
    "version": 1
  }
}