# `BoundedAuthorityProtocol.V1.ExpectedAnchor`
[🔗](https://github.com/baselabs/bounded_authority_protocol/blob/v1.0.0/lib/bounded_authority_protocol/v1/expected_anchor.ex#L1)

Exact expected context for one historical boundary anchor.

## Fields

* `anchor_id` - the expected anchor identity.
* `anchored_at` - the expected anchor time, integer Unix time in seconds.
* `chain_id` - the chain identity: non-empty StringOrURI of at most `identifier_bytes` (512) UTF-8
  bytes.
* `sequence` - the expected anchored sequence number.
* `chain_hash` - the expected raw 32-byte chain hash at `sequence`.
* `key_id` - the expected signing key identifier.
* `key_fingerprint` - the expected raw 32-byte RFC 7638 fingerprint of the signing key.
* `bounds` - a `BoundedAuthorityProtocol.V1.Bounds` struct or a map of tightening overrides; `%{}`
  means the profile maxima (see `BoundedAuthorityProtocol.V1.Bounds.coerce/1`).

# `t`

```elixir
@type t() :: %BoundedAuthorityProtocol.V1.ExpectedAnchor{
  anchor_id: binary(),
  anchored_at: integer(),
  bounds: BoundedAuthorityProtocol.V1.Bounds.t() | map(),
  chain_hash: binary(),
  chain_id: binary(),
  key_fingerprint: binary(),
  key_id: binary(),
  sequence: non_neg_integer()
}
```

Expected context for one boundary anchor.

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*Consult [api-reference.md](api-reference.md) for complete listing*