Mary Mayo
type: MusicGroup
genre: exotica
genre: space music
description: Mary Mayo (20 July 1924 – December 1985) was an American singer who was a member of The Hillside Singers and performed at New York City nightclubs including Michael's Pub and the Copacabana. Early l
popularity: 8
followers: 170
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5111bc32d294739e33914066e31f646784e4a5eada34217de408e70d2d92f4fe
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954717
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954717
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f3c526af-2df9-4740-8e5d-8355dee34bf5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f3c526af-2df9-4740-8e5d-8355dee34bf5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f3c526af-2df9-4740-8e5d-8355dee34bf5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T15:47:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5111bc32d294739e33914066e31f646784e4a5eada34217de408e70d2d92f4fe","name":"Mary Mayo","registered_at":"2026-06-21T14:13:08Z","symbol":"NIM1943655","token_address":"0x20dcc4ea14d56c069265a7b91c7340ddb22df55f","type":"artist","uuid":"f3c526af-2df9-4740-8e5d-8355dee34bf5"}
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 0x5111bc32d294739e33914066e31f646784e4a5eada34217de408e70d2d92f4fe. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f3c526af-2df9-4740-8e5d-8355dee34bf5.json and https://artists.proofprofile.net/proofs/artist/f3c526af-2df9-4740-8e5d-8355dee34bf5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T15:47:51Z
  text: {"copyright_id":"0x5111bc32d294739e33914066e31f646784e4a5eada34217de408e70d2d92f4fe","name":"Mary Mayo","registered_at":"2026-06-21T14:13:08Z","symbol":"NIM1943655","token_address":"0x20dcc4ea14d56c069265a7b91c7340ddb22df55f","type":"artist","uuid":"f3c526af-2df9-4740-8e5d-8355dee34bf5"}
album: Time Remembered
  type: MusicAlbum
  date published: 2000