Pith Number

pith:5XXKM2GC

pith:2017:5XXKM2GCCY2KP42HKFJCZ7NBKU

not attested not anchored not stored refs pending

Unveiling the physics behind the spectral variations of "changing-look" quasars with optical polarimetry

F. Marin

arxiv:1709.01699 v1 · 2017-09-06 · 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{5XXKM2GCCY2KP42HKFJCZ7NBKU}

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	2026-05-18T00:30:41.561441Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

edeea668c21634a7f34751522cfda1551d78d725fc9ae5bbe2332fc7aefb389d

Aliases

arxiv: 1709.01699 · arxiv_version: 1709.01699v1 · doi: 10.48550/arxiv.1709.01699 · pith_short_12: 5XXKM2GCCY2K · pith_short_16: 5XXKM2GCCY2KP42H · pith_short_8: 5XXKM2GC

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/5XXKM2GCCY2KP42HKFJCZ7NBKU \
  | 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: edeea668c21634a7f34751522cfda1551d78d725fc9ae5bbe2332fc7aefb389d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "100bd3e83baf46878ee3163bb092fde0fd3576811dc8be46a0642d7b26bacefb",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2017-09-06T07:21:25Z",
    "title_canon_sha256": "d3440703543134d678749fc5d72a43fde9b4a2f760906db6a0fd8856c2be7259"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.01699",
    "kind": "arxiv",
    "version": 1
  }
}