Class TransitionHasher

constructor

• new TransitionHasher(
      keccakHasher: KeccakHasher,
      blake2b: Blake2b,
  ): TransitionHasher

  Parameters

  • keccakHasher: KeccakHasher
  • blake2b: Blake2b

  Returns TransitionHasher

Readonlyblake2b

extrinsic

• extrinsic(
      extrinsicView: ViewOf,
  ): WithHashAndBytes<
      OpaqueHash & pvm.WithOpaque<"ExtrinsicHash">,
      ViewOf<
          Extrinsic,
          {
              assurances: Descriptor<
                  readonly AvailabilityAssurance[] & pvm.WithOpaque<
                      "[0 .. ValidatorsCount)",
                  >,
                  SequenceView<
                      AvailabilityAssurance,
                      ViewOf<
                          AvailabilityAssurance,
                          {
                              anchor: Descriptor<
                                  Bytes<32> & pvm.WithOpaque<"HeaderHash">,
                                  Bytes<32>,
                              >;
                              bitfield: Descriptor<BitVec, BitVec>;
                              signature: Descriptor<
                                  Bytes<64> & pvm.WithOpaque<"Ed25519Signature">,
                                  Bytes<64>,
                              >;
                              validatorIndex: Descriptor<
                                  number & WithBytesRepresentation<2> & pvm.WithOpaque<
                                      "ValidatorIndex[u16]",
                                  >,
                                  Bytes<2>,
                              >;
                          },
                      >,
                  >,
              >;
              disputes: Descriptor<
                  DisputesExtrinsic,
                  ViewOf<
                      DisputesExtrinsic,
                      {
                          culprits: Descriptor<
                              Culprit[],
                              SequenceView<
                                  Culprit,
                                  ViewOf<
                                      Culprit,
                                      {
                                          key: Descriptor<(...), (...)>;
                                          signature: Descriptor<(...), (...)>;
                                          workReportHash: Descriptor<(...), (...)>;
                                      },
                                  >,
                              >,
                          >;
                          faults: Descriptor<
                              Fault[],
                              SequenceView<
                                  Fault,
                                  ViewOf<
                                      Fault,
                                      {
                                          key: Descriptor<(...), (...)>;
                                          signature: Descriptor<(...), (...)>;
                                          wasConsideredValid: Descriptor<(...), (...)>;
                                          workReportHash: Descriptor<(...), (...)>;
                                      },
                                  >,
                              >,
                          >;
                          verdicts: Descriptor<
                              Verdict[],
                              SequenceView<
                                  Verdict,
                                  ViewOf<
                                      Verdict,
                                      {
                                          votes: Descriptor<(...), (...)>;
                                          votesEpoch: Descriptor<(...), (...)>;
                                          workReportHash: Descriptor<(...), (...)>;
                                      },
                                  >,
                              >,
                          >;
                      },
                  >,
              >;
              guarantees: Descriptor<
                  readonly ReportGuarantee[] & pvm.WithOpaque<"[0..CoresCount)">,
                  SequenceView<
                      ReportGuarantee,
                      ViewOf<
                          ReportGuarantee,
                          {
                              credentials: Descriptor<
                                  | readonly (...)[] & pvm.WithOpaque<(...)>
                                  | readonly (...)[] & pvm.WithOpaque<(...)>,
                                  SequenceView<
                                      Credential,
                                      ViewOf<Credential, { signature: ...; validatorIndex: ... }>,
                                  >,
                              >;
                              report: Descriptor<
                                  WorkReportNoCodec,
                                  ViewOf<
                                      WorkReportNoCodec,
                                      {
                                          authorizationGasUsed: Descriptor<(...), (...)>;
                                          authorizationOutput: Descriptor<(...), (...)>;
                                          authorizerHash: Descriptor<(...), (...)>;
                                          context: Descriptor<(...), (...)>;
                                          coreIndex: Descriptor<(...), (...)>;
                                          results: Descriptor<(...), (...)>;
                                          segmentRootLookup: Descriptor<(...), (...)>;
                                          workPackageSpec: Descriptor<(...), (...)>;
                                      },
                                  >,
                              >;
                              slot: Descriptor<
                                  number & WithBytesRepresentation<4> & pvm.WithOpaque<
                                      "TimeSlot[u32]",
                                  >,
                                  Bytes<4>,
                              >;
                          },
                      >,
                  >,
              >;
              preimages: Descriptor<
                  Preimage[],
                  SequenceView<
                      Preimage,
                      ViewOf<
                          Preimage,
                          {
                              blob: Descriptor<BytesBlob, BytesBlob>;
                              requester: Descriptor<
                                  number & WithBytesRepresentation<4> & pvm.WithOpaque<
                                      "ServiceId[u32]",
                                  >,
                                  Bytes<4>,
                              >;
                          },
                      >,
                  >,
              >;
              tickets: Descriptor<
                  readonly SignedTicket[] & pvm.WithOpaque<
                      "Size: [0..chainSpec.maxTicketsPerExtrinsic)",
                  >,
                  SequenceView<
                      SignedTicket,
                      ViewOf<
                          SignedTicket,
                          {
                              attempt: Descriptor<
                                  number & WithBytesRepresentation<1> & pvm.WithOpaque<
                                      "TicketAttempt[0|1|2]",
                                  >,
                                  U8,
                              >;
                              signature: Descriptor<
                                  Bytes<784> & pvm.WithOpaque<"BandersnatchRingSignature">,
                                  Bytes<784>,
                              >;
                          },
                      >,
                  >,
              >;
          },
      >,
  >

  Merkle commitment of the extrinsic data

  https://graypaper.fluffylabs.dev/#/cc517d7/0ca1000ca200?v=0.6.5

  Parameters

  • extrinsicView: ViewOf

  Returns WithHashAndBytes<
      OpaqueHash & pvm.WithOpaque<"ExtrinsicHash">,
      ViewOf<
          Extrinsic,
          {
              assurances: Descriptor<
                  readonly AvailabilityAssurance[] & pvm.WithOpaque<
                      "[0 .. ValidatorsCount)",
                  >,
                  SequenceView<
                      AvailabilityAssurance,
                      ViewOf<
                          AvailabilityAssurance,
                          {
                              anchor: Descriptor<
                                  Bytes<32> & pvm.WithOpaque<"HeaderHash">,
                                  Bytes<32>,
                              >;
                              bitfield: Descriptor<BitVec, BitVec>;
                              signature: Descriptor<
                                  Bytes<64> & pvm.WithOpaque<"Ed25519Signature">,
                                  Bytes<64>,
                              >;
                              validatorIndex: Descriptor<
                                  number & WithBytesRepresentation<2> & pvm.WithOpaque<
                                      "ValidatorIndex[u16]",
                                  >,
                                  Bytes<2>,
                              >;
                          },
                      >,
                  >,
              >;
              disputes: Descriptor<
                  DisputesExtrinsic,
                  ViewOf<
                      DisputesExtrinsic,
                      {
                          culprits: Descriptor<
                              Culprit[],
                              SequenceView<
                                  Culprit,
                                  ViewOf<
                                      Culprit,
                                      {
                                          key: Descriptor<(...), (...)>;
                                          signature: Descriptor<(...), (...)>;
                                          workReportHash: Descriptor<(...), (...)>;
                                      },
                                  >,
                              >,
                          >;
                          faults: Descriptor<
                              Fault[],
                              SequenceView<
                                  Fault,
                                  ViewOf<
                                      Fault,
                                      {
                                          key: Descriptor<(...), (...)>;
                                          signature: Descriptor<(...), (...)>;
                                          wasConsideredValid: Descriptor<(...), (...)>;
                                          workReportHash: Descriptor<(...), (...)>;
                                      },
                                  >,
                              >,
                          >;
                          verdicts: Descriptor<
                              Verdict[],
                              SequenceView<
                                  Verdict,
                                  ViewOf<
                                      Verdict,
                                      {
                                          votes: Descriptor<(...), (...)>;
                                          votesEpoch: Descriptor<(...), (...)>;
                                          workReportHash: Descriptor<(...), (...)>;
                                      },
                                  >,
                              >,
                          >;
                      },
                  >,
              >;
              guarantees: Descriptor<
                  readonly ReportGuarantee[] & pvm.WithOpaque<"[0..CoresCount)">,
                  SequenceView<
                      ReportGuarantee,
                      ViewOf<
                          ReportGuarantee,
                          {
                              credentials: Descriptor<
                                  | readonly (...)[] & pvm.WithOpaque<(...)>
                                  | readonly (...)[] & pvm.WithOpaque<(...)>,
                                  SequenceView<
                                      Credential,
                                      ViewOf<Credential, { signature: ...; validatorIndex: ... }>,
                                  >,
                              >;
                              report: Descriptor<
                                  WorkReportNoCodec,
                                  ViewOf<
                                      WorkReportNoCodec,
                                      {
                                          authorizationGasUsed: Descriptor<(...), (...)>;
                                          authorizationOutput: Descriptor<(...), (...)>;
                                          authorizerHash: Descriptor<(...), (...)>;
                                          context: Descriptor<(...), (...)>;
                                          coreIndex: Descriptor<(...), (...)>;
                                          results: Descriptor<(...), (...)>;
                                          segmentRootLookup: Descriptor<(...), (...)>;
                                          workPackageSpec: Descriptor<(...), (...)>;
                                      },
                                  >,
                              >;
                              slot: Descriptor<
                                  number & WithBytesRepresentation<4> & pvm.WithOpaque<
                                      "TimeSlot[u32]",
                                  >,
                                  Bytes<4>,
                              >;
                          },
                      >,
                  >,
              >;
              preimages: Descriptor<
                  Preimage[],
                  SequenceView<
                      Preimage,
                      ViewOf<
                          Preimage,
                          {
                              blob: Descriptor<BytesBlob, BytesBlob>;
                              requester: Descriptor<
                                  number & WithBytesRepresentation<4> & pvm.WithOpaque<
                                      "ServiceId[u32]",
                                  >,
                                  Bytes<4>,
                              >;
                          },
                      >,
                  >,
              >;
              tickets: Descriptor<
                  readonly SignedTicket[] & pvm.WithOpaque<
                      "Size: [0..chainSpec.maxTicketsPerExtrinsic)",
                  >,
                  SequenceView<
                      SignedTicket,
                      ViewOf<
                          SignedTicket,
                          {
                              attempt: Descriptor<
                                  number & WithBytesRepresentation<1> & pvm.WithOpaque<
                                      "TicketAttempt[0|1|2]",
                                  >,
                                  U8,
                              >;
                              signature: Descriptor<
                                  Bytes<784> & pvm.WithOpaque<"BandersnatchRingSignature">,
                                  Bytes<784>,
                              >;
                          },
                      >,
                  >,
              >;
          },
      >,
  >

hashConcat

• hashConcat(a: KeccakHash, b: KeccakHash): KeccakHash

  Concatenates two hashes and hash this concatenation

  Parameters

  • a: KeccakHash
  • b: KeccakHash

  Returns KeccakHash

hashConcatPrepend

• hashConcatPrepend(id: BytesBlob, a: KeccakHash, b: KeccakHash): KeccakHash

  Hash two items together with extra bytes blob prepended.

  Parameters

  • id: BytesBlob
  • a: KeccakHash
  • b: KeccakHash

  Returns KeccakHash

header

• header(
      header: ViewOf,
  ): WithHash<
      OpaqueHash & pvm.WithOpaque<"HeaderHash">,
      ViewOf<
          Header & CodecRecord<Header>,
          {
              bandersnatchBlockAuthorIndex: Descriptor<
                  number & WithBytesRepresentation<2> & pvm.WithOpaque<
                      "ValidatorIndex[u16]",
                  >,
                  Bytes<2>,
              >;
              entropySource: Descriptor<
                  Bytes<96> & pvm.WithOpaque<"BandersnatchVrfSignature">,
                  Bytes<96>,
              >;
              epochMarker: Descriptor<
                  EpochMarker
                  | null,
  
                      | ViewOf<
                          EpochMarker,
                          {
                              entropy: Descriptor<
                                  Bytes<32> & pvm.WithOpaque<"EntropyHash">,
                                  Bytes<32>,
                              >;
                              ticketsEntropy: Descriptor<
                                  Bytes<32> & pvm.WithOpaque<"EntropyHash">,
                                  Bytes<32>,
                              >;
                              validators: Descriptor<
                                  readonly ValidatorKeys[] & pvm.WithOpaque<"ValidatorsCount">,
                                  SequenceView<
                                      ValidatorKeys,
                                      ViewOf<ValidatorKeys, { bandersnatch: ...; ed25519: ... }>,
                                  >,
                              >;
                          },
                      >
                      | null,
              >;
              extrinsicHash: Descriptor<
                  Bytes<32> & pvm.WithOpaque<"ExtrinsicHash">,
                  Bytes<32>,
              >;
              offendersMarker: Descriptor<
                  (Bytes<32> & pvm.WithOpaque<"Ed25519Key">)[],
                  SequenceView<Bytes<32> & pvm.WithOpaque<"Ed25519Key">, Bytes<32>>,
              >;
              parentHeaderHash: Descriptor<
                  Bytes<32> & pvm.WithOpaque<"HeaderHash">,
                  Bytes<32>,
              >;
              priorStateRoot: Descriptor<
                  Bytes<32> & pvm.WithOpaque<"StateRootHash">,
                  Bytes<32>,
              >;
              seal: Descriptor<
                  Bytes<96> & pvm.WithOpaque<"BandersnatchVrfSignature">,
                  Bytes<96>,
              >;
              ticketsMarker: Descriptor<
                  TicketsMarker
                  | null,
  
                      | ViewOf<
                          TicketsMarker,
                          {
                              tickets: Descriptor<
                                  readonly Ticket[] & pvm.WithOpaque<"EpochLength">,
                                  SequenceView<Ticket, ViewOf<Ticket, { attempt: ...; id: ... }>>,
                              >;
                          },
                      >
                      | null,
              >;
              timeSlotIndex: Descriptor<
                  number & WithBytesRepresentation<4> & pvm.WithOpaque<"TimeSlot[u32]">,
                  Bytes<4>,
              >;
          },
      >,
  >

  Creates hash from the block header view

  Parameters

  • header: ViewOf

  Returns WithHash<
      OpaqueHash & pvm.WithOpaque<"HeaderHash">,
      ViewOf<
          Header & CodecRecord<Header>,
          {
              bandersnatchBlockAuthorIndex: Descriptor<
                  number & WithBytesRepresentation<2> & pvm.WithOpaque<
                      "ValidatorIndex[u16]",
                  >,
                  Bytes<2>,
              >;
              entropySource: Descriptor<
                  Bytes<96> & pvm.WithOpaque<"BandersnatchVrfSignature">,
                  Bytes<96>,
              >;
              epochMarker: Descriptor<
                  EpochMarker
                  | null,
  
                      | ViewOf<
                          EpochMarker,
                          {
                              entropy: Descriptor<
                                  Bytes<32> & pvm.WithOpaque<"EntropyHash">,
                                  Bytes<32>,
                              >;
                              ticketsEntropy: Descriptor<
                                  Bytes<32> & pvm.WithOpaque<"EntropyHash">,
                                  Bytes<32>,
                              >;
                              validators: Descriptor<
                                  readonly ValidatorKeys[] & pvm.WithOpaque<"ValidatorsCount">,
                                  SequenceView<
                                      ValidatorKeys,
                                      ViewOf<ValidatorKeys, { bandersnatch: ...; ed25519: ... }>,
                                  >,
                              >;
                          },
                      >
                      | null,
              >;
              extrinsicHash: Descriptor<
                  Bytes<32> & pvm.WithOpaque<"ExtrinsicHash">,
                  Bytes<32>,
              >;
              offendersMarker: Descriptor<
                  (Bytes<32> & pvm.WithOpaque<"Ed25519Key">)[],
                  SequenceView<Bytes<32> & pvm.WithOpaque<"Ed25519Key">, Bytes<32>>,
              >;
              parentHeaderHash: Descriptor<
                  Bytes<32> & pvm.WithOpaque<"HeaderHash">,
                  Bytes<32>,
              >;
              priorStateRoot: Descriptor<
                  Bytes<32> & pvm.WithOpaque<"StateRootHash">,
                  Bytes<32>,
              >;
              seal: Descriptor<
                  Bytes<96> & pvm.WithOpaque<"BandersnatchVrfSignature">,
                  Bytes<96>,
              >;
              ticketsMarker: Descriptor<
                  TicketsMarker
                  | null,
  
                      | ViewOf<
                          TicketsMarker,
                          {
                              tickets: Descriptor<
                                  readonly Ticket[] & pvm.WithOpaque<"EpochLength">,
                                  SequenceView<Ticket, ViewOf<Ticket, { attempt: ...; id: ... }>>,
                              >;
                          },
                      >
                      | null,
              >;
              timeSlotIndex: Descriptor<
                  number & WithBytesRepresentation<4> & pvm.WithOpaque<"TimeSlot[u32]">,
                  Bytes<4>,
              >;
          },
      >,
  >