Pith Number

pith:Q3YBZ2FI

pith:2016:Q3YBZ2FIFV4J3M5BUJBVJ7YQYZ

not attested not anchored not stored refs pending

Proplyds around a B1 star - 42 Orionis in NGC 1977

Cathie J. Clarke, Jinyoung Serena Kim, Min Fang, Stefano Facchini

arxiv:1606.08271 v1 · 2016-06-27 · astro-ph.SR

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	2026-05-18T01:10:28.791447Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

86f01ce8a82d789db3a1a24354ff10c66deaca2f03da27c7fd115a5698ecbdf5

Aliases

arxiv: 1606.08271 · arxiv_version: 1606.08271v1 · doi: 10.48550/arxiv.1606.08271 · pith_short_12: Q3YBZ2FIFV4J · pith_short_16: Q3YBZ2FIFV4J3M5B · pith_short_8: Q3YBZ2FI

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/Q3YBZ2FIFV4J3M5BUJBVJ7YQYZ \
  | 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: 86f01ce8a82d789db3a1a24354ff10c66deaca2f03da27c7fd115a5698ecbdf5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "79293e57552f2351e6b372478a15eb0c8f4b20e23c3371e06b5265d9b9ec0a9c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2016-06-27T13:43:46Z",
    "title_canon_sha256": "8b1b24ef5ae613936936b81dfdb7ebaf3e2da48743d979760a92580a6ed1600f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1606.08271",
    "kind": "arxiv",
    "version": 1
  }
}