Pith Number

pith:66DKEFGK

pith:2015:66DKEFGKMBDWWBCV6AWECZ3LQF

not attested not anchored not stored refs pending

The "Green Bean" Galaxy SDSS J224024.1--092748: Unravelling the emission signature of a quasar ionization echo

James E. H. Turner, Mischa Schirmer, Rebecca L. Davies

arxiv:1502.07754 v2 · 2015-02-26 · 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{66DKEFGKMBDWWBCV6AWECZ3LQF}

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	2026-05-18T01:40:54.217904Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f786a214ca60476b0455f02c41676b81624018a7526d11bfb0349e36bdd87d14

Aliases

arxiv: 1502.07754 · arxiv_version: 1502.07754v2 · doi: 10.48550/arxiv.1502.07754 · pith_short_12: 66DKEFGKMBDW · pith_short_16: 66DKEFGKMBDWWBCV · pith_short_8: 66DKEFGK

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/66DKEFGKMBDWWBCV6AWECZ3LQF \
  | 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: f786a214ca60476b0455f02c41676b81624018a7526d11bfb0349e36bdd87d14

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b391a21c4b76c185cb5fc40c86f99a81add1555702cdc436277b6ab09a8a0eef",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-02-26T21:00:13Z",
    "title_canon_sha256": "c3a8dfa7b5de6184a765d28f74043a78b41cf092eb21db74efa0de76fa791d93"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.07754",
    "kind": "arxiv",
    "version": 2
  }
}