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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e14f6c47152074f51bc23e6e53e8ec082dd393f8a996a1eccfbbc6c6e5e10cd. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/555642e5-d767-40ae-848f-5052c22b4619.json and https://artists.proofprofile.net/proofs/artist/555642e5-d767-40ae-848f-5052c22b4619.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pop Party - Professional Backing Tracks, Vol.1
Christmas Party - Professional Backing Tracks, Vol. 2
Feel Good Songs - Professional Backing Tracks, Vol. 5
70s Chart Hits - Professional Backing Tracks, Vol. 1 (Hits of the Decade)
Pop Party - Professional Backing Tracks, Vol. 3
Christmas Party - Professional Backing Tracks, Vol. 4
Motown Professional Backing Tracks, Vol.1
90s Chart Hits - Professional Backing Tracks, Vol. 2 (Hits of the Decade)
60s Chart Hits - Professional Backing Tracks, Vol. 3 (Hits of the Decade)
60s Chart Hits - Professional Backing Tracks, Vol. 2 (Hits of the Decade)
Hits From Kylie Minogue - Professional Backing Tracks, Vol. 1
Pop Party - Professional Backing Tracks, Vol. 4
Christmas Party - Professional Backing Tracks, Vol. 1
60s Chart Hits - Professional Backing Tracks, Vol.1 (Hits of the Decade)
Feel Good Songs - Professional Backing Tracks Vol.4
80s Chart Hits - Professional Backing Tracks, Vol. 2 (Hits of the Decade)
00s Chart Hits - Professional Backing Tracks, Vol. 3 (Hits of the Decade)
90s Chart Hits - Professional Backing Tracks, Vol. 3 (Hits of the Decade)
90s Chart Hits - Professional Backing Tracks, Vol. 1 (Hits of the Decade)
70s Chart Hits - Professional Backing Tracks, Vol.5 (Hits of the Decade)
Pop Party - Professional Backing Tracks, Vol.5
80s Chart Hits - Professional Backing Tracks, Vol. 5 (Hits of the Decade)
60s Chart Hits - Professional Backing Tracks, Vol.5 (Hits of the Decade)
60s Chart Hits - Professional Backing Tracks, Vol. 4 (Hits of the Decade)
00s Chart Hits - Professional Backing Tracks, Vol. 4
Love Songs - Professional Backing Tracks, Vol. 3
Love Songs - Professional Backing Tracks, Vol. 4
Love Songs - Professional Backing Tracks, Vol. 5
Feel Good Songs - Professional Backing Tracks, Vol.2
70s Chart Hits - Professional Backing Tracks, Vol. 2 (Hits of the Decade)
Feel Good Songs - Professional Backing Tracks, Vol.1
Christmas Party - Professional Backing Tracks, Vol. 3
Love Songs - Professional Backing Tracks, Vol. 2
80s Chart Hits - Professional Backing Tracks, Vol. 4 (Hits of the Decade)
80s Chart Hits - Professional Backing Tracks, Vol. 1 (Hits of the Decade)
Feel Good Songs - Professional Backing Tracks Vol.3
90s Chart Hits - Professional Backing Tracks, Vol. 5 (Hits of the Decade)
70s Chart Hits - Professional Backing Tracks, Vol. 4 (Hits of the Decade)
00s Chart Hits - Professional Backing Tracks, Vol. 5 (Hits of the Decade)
00s Chart Hits - Professional Backing Tracks, Vol.1 (Hits of the Decade)
80's No.1's - Professional backing Tracks, Vol. 1
Rock - Professional Backing Tracks, Vol. 2
Female Solos - Professional Backing Tracks, Vol. 1
Divas - Professional Backing Tracks, Vol. 3
Divas - Professional Backing Tracks, Vol. 1
00's No.1s - Professional Backing Tracks, Vol.5
R'n'B - Professional Backing Tracks, Vol.4
Female Solos - Professional Backing Tracks, Vol. 2
Musicals - Professional Backing Tracks Vol.1
Hits from Madonna - Professional Backing Tracks
Female Solos - Professional Backing Tracks, Vol. 3
60's No.1s - Professional Backing Tracks, Vol. 2
Hits From Cliff Richard - Professional Backing Tracks
Ballads - Professional Backing Tracks, Vol. 2
Rock - Professional Backing Tracks, Vol.4
Male Solos - Professional Backing Tracks, Vol. 2
Male Solos - Professional Backing Tracks, Vol. 1
Hits from The Beatles - Professional Backing Tracks, Vol. 1
Male Solos - Professional Backing Tracks, Vol. 4
Hits From Robbie Williams - Professional Backing Tracks, Vol. 1
70's No.1s - Professional Backing Tracks, Vol. 2
Hits from Oasis - Professional Backing Tracks
Female Solos - Professional Backing Tracks, Vol. 5
Hits From Britney Spears - Professional Backing Tracks, Vol. 1
90's No.1s - Professional Backing Tracks, Vol. 1
Rock - Professional Backing Tracks, Vol. 3
Rock 'n' Roll - Professional Backing Tracks, Vol. 1
Hits From Robbie Williams - Professional Backing Tracks, Vol. 2
80's No.1s - Professional Backing Tracks, Vol. 3
60's No.1s - Professional Backing Tracks, Vol. 1
Hits From The Beatles - Professional Backing Tracks, Vol. 2
Divas - Professional Backing Tracks, Vol. 2
Divas - Professional Backing Tracks, Vol. 4
Country Legends - Professional Backing Tracks, Vol. 1
00's No.1s - Professional Backing Tracks, Vol. 2
70's No.1's - Professional Backing Tracks, Vol. 1
Female Solos - Professional Backing Tracks, Vol. 4
Hits from the Carpenters - Professional Backing Tracks, Vol. 1
Girl Bands - Professional Backing Tracks, Vol. 2
Duets - Professional Backing Tracks, Vol. 1
Ballads - Professional Backing Tracks, Vol. 1
00's No.1s - Professional Backing Tracks, Vol.1
90's No.1s - Professional Backing Tracks, Vol. 2
80's No.1s - Professional backing Tracks, Vol. 2
R'n'B - Professional Backing Tracks, Vol. 2
Male Solos - Professional Backing Tracks, Vol. 3
Duets - Professional Backing Tracks, Vol. 2
Country Legends - Professional Backing Tracks, Vol. 2
00's No.1s - Professional Backing Tracks, Vol.3
R'n'B - Professional Backing Tracks, Vol.5
Musicals - Professional Backing Tracks, Vol. 2
Male Solos - Professional Backing Tracks, Vol. 5