Pith Number

pith:HZ2RZF7C

pith:2013:HZ2RZF7C5OA2ZRLS3FNIHEPL3G

not attested not anchored not stored refs pending

An accurate geometric distance to the compact binary SS Cygni vindicates accretion disc theory

(2) U. Alberta, 3), (3) U. Virginia, (4) U. Southampton, (5) U. Nijmegen, (6) AAVSO), C. Knigge (4), E. G. K\"ording (5), E. O. Waagen (6) ((1) ICRAR - Curtin, G. R. Sivakoff (2, J. C. A. Miller-Jones (1), M. Templeton (6)

arxiv:1305.5846 v1 · 2013-05-24 · astro-ph.HE

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

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	2026-05-18T03:24:53.520059Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3e751c97e2eb81acc572d95a8391ebd980f064346ec837616840b78e147fc258

Aliases

arxiv: 1305.5846 · arxiv_version: 1305.5846v1 · doi: 10.48550/arxiv.1305.5846 · pith_short_12: HZ2RZF7C5OA2 · pith_short_16: HZ2RZF7C5OA2ZRLS · pith_short_8: HZ2RZF7C

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/HZ2RZF7C5OA2ZRLS3FNIHEPL3G \
  | 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: 3e751c97e2eb81acc572d95a8391ebd980f064346ec837616840b78e147fc258

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a2a470ee6a08b8ebd9ebd1ae72a3966abe2cb7f992880c131ea95845723f537",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-05-24T20:01:09Z",
    "title_canon_sha256": "fcd1fe28399b3802f846a42219017fb1517c08b89df7e4fab44dba4619f5b839"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.5846",
    "kind": "arxiv",
    "version": 1
  }
}