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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ee8813df8911a613f21bdcd8ea84909cfe92a566ac38ec095c2692a3dcbde9. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/11512342-82eb-4714-aef2-1709fcd6db9e.json and https://artists.proofprofile.net/proofs/artist/11512342-82eb-4714-aef2-1709fcd6db9e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Schön ist das Leben (Instrumental Karaoke Version Originally Performed By Paveier)
Ein Festival der Liebe (Instrumental Karaoke Version Originally Performed By Jürgen Marcus)
Last Christmas (Karaoke Version Originally Performed By Wham)
Dieser Flug (Instrumental Karaoke Disco Version Originally Performed By Jörg Bausch)
Ein Stern (der deinen Namen trägt) [Instrumental Karaoke Version Originally Performed By Nico Gemba]
Mittenrein ins Glück (Instrumental Karaoke Version Originally Performed By Claudia Jung)
Soldier (Instrumental Karaoke Version Originally Performed By Thomas Anders)
Humba Täterä (Instrumental Karaoke Version Originally Performed By Tim Toupet)
Feel (Instrumental Karaoke Version Originally Performed By Robbie Williams)
Eine Träne hast du heut geweint (Karaoke Version Originally Performed By Wilde Herzen)
Ein Stern (Instrumental Karaoke Version Originally Performed By DJ Ötzi & Nic P.)
I Don't Feel Like Dancing (Instrumental Karaoke Version Originally Performed By Scissor Sisters)
Hasta la vista (Instrumental Karaoke Version Originally Performed By Rex Gildo)
Gesegnet seist du (Instrumental Karaoke Version Originally Performed By BEN)
That's All (Instrumental Karaoke Version Originally Performed By Rod Stewart)
So ein Mann (Instrumental Karaoke Version Originally Performed By Margot Werner)
Macarena (Karaoke Version Originally Performed By Los Del Rio)
Lovelight (Instrumental Karaoke Version Originally Performed By Robbie Williams)
Like the Wind (Instrumental Karaoke Version Originally Performed By Vibekingz)
Övverall, wo mir Kölsche sin (Instrumental Karaoke Version Originally Performed By Filue)
Bilder von dir (Instrumental Karaoke Version Originally Performed By Laith Al-Deen)
Bilder von dir - Instrumental Karaoke Version Originally Performed By Laith Al-Deen
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391b0ff3415a475694f0fd7496ffbc75015774eea0a45e58502cf235e487be31. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DECL61500007.
All Good Things (Come to an End) [Instrumental Karaoke Version Originally Performed By Nelly Furtado]
Patience (Instrumental Karaoke Version Originally Performed By Take That)
Laguna d'amore (Instrumental Karaoke Version Originally Performed By Flippers)