Pith Number

pith:UDEX4LGC

pith:2021:UDEX4LGCEFM3IH7GUHN7EBBQR6

not attested not anchored not stored refs pending

ALMA/NICER observations of GRS 1915+105 indicate a return to a hard state

Karri I. I. Koljonen, Talvikki Hovatta

arxiv:2102.00693 v2 · 2021-02-01 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UDEX4LGCEFM3IH7GUHN7EBBQR6}

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	2026-07-05T02:29:43.598037Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a0c97e2cc22159b41fe6a1dbf204308f8a1001a15ad91611719c771df6983cb4

Aliases

arxiv: 2102.00693 · arxiv_version: 2102.00693v2 · doi: 10.48550/arxiv.2102.00693 · pith_short_12: UDEX4LGCEFM3 · pith_short_16: UDEX4LGCEFM3IH7G · pith_short_8: UDEX4LGC

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/UDEX4LGCEFM3IH7GUHN7EBBQR6 \
  | 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: a0c97e2cc22159b41fe6a1dbf204308f8a1001a15ad91611719c771df6983cb4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "493fc761ed3576e26cb836255148ad7769796907ecb895f812dd41d8350e45af",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-02-01T08:25:52Z",
    "title_canon_sha256": "e989903c526ff51bba94d9506bff692bc8ccd715e1ecf98883cfef3d0a09377c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.00693",
    "kind": "arxiv",
    "version": 2
  }
}