Martin Codax
type: MusicGroup
genre: medieval
description: thumb|Cantigas de Amigo (Pierpont Morgan Library, New York, Vindel MS M979) Martin Codax or Codaz, Martín Codax () or Martim Codax was a Galician medieval joglar (non-noble composer and performer, as
popularity: 11
followers: 809
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9d9324fdcb4ac7ae8e9b34791b46b39a0e94557cef50d48d7874a22131a200fd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953742
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953742
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8fd16063-957e-4293-bef1-4018bdf16998.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8fd16063-957e-4293-bef1-4018bdf16998.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8fd16063-957e-4293-bef1-4018bdf16998
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T04:47:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9d9324fdcb4ac7ae8e9b34791b46b39a0e94557cef50d48d7874a22131a200fd","name":"Martin Codax","registered_at":"2026-06-14T19:32:42Z","symbol":"NIM0554208","token_address":"0xc29a1769e7a625f1c8ae0f9169810981a3e44758","type":"artist","uuid":"8fd16063-957e-4293-bef1-4018bdf16998"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9324fdcb4ac7ae8e9b34791b46b39a0e94557cef50d48d7874a22131a200fd. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8fd16063-957e-4293-bef1-4018bdf16998.json and https://artists.proofprofile.net/proofs/artist/8fd16063-957e-4293-bef1-4018bdf16998.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T04:47:56Z
  text: {"copyright_id":"0x9d9324fdcb4ac7ae8e9b34791b46b39a0e94557cef50d48d7874a22131a200fd","name":"Martin Codax","registered_at":"2026-06-14T19:32:42Z","symbol":"NIM0554208","token_address":"0xc29a1769e7a625f1c8ae0f9169810981a3e44758","type":"artist","uuid":"8fd16063-957e-4293-bef1-4018bdf16998"}
album: Cantos de la España Antiqua
  type: MusicAlbum
  date published: 2019-04-22
album: Ondas do Mar. Las siete Cantigas d'amigo de Martin Codax
  type: MusicAlbum
  date published: 2024-09-11
track: Cantigas de amigo: I. Ondas do mare de Vigo
  type: MusicRecording
  duration: PT2M46S
  duration ms: 166946
  explicit: false
  by artist: Martin Codax
  by artist: Paul Hillier
  by artist: Theatre Of Voices
  in album: Cantigas
    type: MusicAlbum
    date published: 2006-08-08
  popularity: 1
  isrc code: USHM19437802
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T19:03:35+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x7fabfd8778ba4820772baef1e0e215d2d37052dc3672f981e0ec3d48ccfa924b
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960455
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960455
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM19437802
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T19:53:13Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fabfd8778ba4820772baef1e0e215d2d37052dc3672f981e0ec3d48ccfa924b. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM19437802.
    date published: 2026-07-31T19:53:13Z
  audio: Cantigas de amigo: I. Ondas do mare de Vigo
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 121.687
    additional property: Musical Key
      type: PropertyValue
      value: 11
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.304
    additional property: Energy
      type: PropertyValue
      value: 0.051
    additional property: Speechiness
      type: PropertyValue
      value: 0.05
    additional property: Acousticness
      type: PropertyValue
      value: 0.982
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.135
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.158
    additional property: Loudness (dB)
      type: PropertyValue
      value: -25.804
    additional property: Key Name
      type: PropertyValue
      value: B
    additional property: Mode Name
      type: PropertyValue
      value: Major