Hogia'R Wyddfa
type: MusicGroup
description: Hogia’r Wyddfa were a Welsh five-piece vocal group with a career in Welsh-language entertainment that lasted fifty years. One of the best-selling Welsh-language groups of the 1970s, they were awarded
popularity: 12
followers: 1121
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd735806a8a7ddbd39f4bee098c0d7c61830fdb55dc2c78a6270d0b9b34b344a3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953610
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953610
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1523729b-9f91-40f6-8809-4ff049698eac.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1523729b-9f91-40f6-8809-4ff049698eac.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1523729b-9f91-40f6-8809-4ff049698eac
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T07:58:09Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd735806a8a7ddbd39f4bee098c0d7c61830fdb55dc2c78a6270d0b9b34b344a3","name":"Hogia'R Wyddfa","registered_at":"2026-06-14T06:37:20Z","symbol":"NIM0369256","token_address":"0xc8750c850cae1adc95ad5fdc923870f9ea6b6a7e","type":"artist","uuid":"1523729b-9f91-40f6-8809-4ff049698eac"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd735806a8a7ddbd39f4bee098c0d7c61830fdb55dc2c78a6270d0b9b34b344a3. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1523729b-9f91-40f6-8809-4ff049698eac.json and https://artists.proofprofile.net/proofs/artist/1523729b-9f91-40f6-8809-4ff049698eac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T07:58:09Z
  text: {"copyright_id":"0xd735806a8a7ddbd39f4bee098c0d7c61830fdb55dc2c78a6270d0b9b34b344a3","name":"Hogia'R Wyddfa","registered_at":"2026-06-14T06:37:20Z","symbol":"NIM0369256","token_address":"0xc8750c850cae1adc95ad5fdc923870f9ea6b6a7e","type":"artist","uuid":"1523729b-9f91-40f6-8809-4ff049698eac"}
album: Bro Dwyfor
  type: MusicAlbum
  date published: 1975
album: Dewch Gymry Glân i Wrando ar ein Cân!
  type: MusicAlbum
  date published: 1976-10-01
album: Wil Tatws Trwy Crwyn
  type: MusicAlbum
  date published: 1977
album: Yn Taro Deuddeg
  type: MusicAlbum
  date published: 1977-07-17
album: Hogia'r Wyddfa'n Difyrru'r Amser
  type: MusicAlbum
  date published: 1979-07-01
album: Caneuon Gorau Hogia'r Wyddfa 2
  type: MusicAlbum
  date published: 1979-09-19
album: Maradona
  type: MusicAlbum
  date published: 1985-07-16
album: Pigion Disglair Hogia'R Wyddfa
  type: MusicAlbum
  date published: 2007
album: Goreuon / Best Of
  type: MusicAlbum
  date published: 2010-07-01
  track: Safwn Yn Y Bwlch
    type: MusicRecording
    duration: PT3M27S
    duration ms: 207880
    explicit: false
    by artist: Hogia'R Wyddfa
    in album: Goreuon / Best Of
      type: MusicAlbum
      date published: 2010-07-01
    isrc code: GBCFU0300693
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-02T20:54:27+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x5762ad2356d2aafd5f0f3a9a9f1c7ab3d906923e739befd08ab59a982370fa57
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956396
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956396
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCFU0300693
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T21:01:51Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5762ad2356d2aafd5f0f3a9a9f1c7ab3d906923e739befd08ab59a982370fa57. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/GBCFU0300693.
      date published: 2026-07-02T21:01:51Z
    audio: Safwn Yn Y Bwlch
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 115.964
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.49
      additional property: Energy
        type: PropertyValue
        value: 0.451
      additional property: Speechiness
        type: PropertyValue
        value: 0.034
      additional property: Acousticness
        type: PropertyValue
        value: 0.713
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.151
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.679
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.064
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Hogia'r Wyddfa Mewn Bocs
  type: MusicAlbum
  date published: 2013-08-01
album: Hogia'r Wyddfa Mewn Bocs
  type: MusicAlbum
  date published: 2013-08-01
  track: Safwn Yn Y Bwlch
    type: MusicRecording
    duration: PT3M24S
    duration ms: 204537
    explicit: false
    by artist: Hogia'R Wyddfa
    in album: Hogia'r Wyddfa Mewn Bocs
      type: MusicAlbum
      date published: 2013-08-01
    isrc code: GBCFU0400343
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T08:02:01+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xfd3296bf433fcfbd0fce5fcb42689342193440c1eb3f1deeecc732b55262d6dd
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956484
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956484
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCFU0400343
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T10:47:44Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3296bf433fcfbd0fce5fcb42689342193440c1eb3f1deeecc732b55262d6dd. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBCFU0400343.
      date published: 2026-07-03T10:47:44Z
    audio: Safwn Yn Y Bwlch
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 115.927
      additional property: Musical Key
      additional property: Mode (Major/Minor)
      additional property: Time Signature
      additional property: Danceability
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Musical Key
type: PropertyValue
value: 0

Mode (Major/Minor)
type: PropertyValue
value: 1

Time Signature
type: PropertyValue
value: 3

Danceability
type: PropertyValue
value: 0.485

Energy
type: PropertyValue
value: 0.482

Speechiness
type: PropertyValue
value: 0.032

Acousticness
type: PropertyValue
value: 0.775

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.111

Valence (Positivity)
type: PropertyValue
value: 0.621

Loudness (dB)
type: PropertyValue
value: -8.876

Key Name
type: PropertyValue
value: C

Mode Name
type: PropertyValue
value: Major