CPH, CpH, Cph, or cph may refer to: California State Polytechnic University, Humboldt, public university in Arcata, California Castle Peak Hospital, the oldest and largest psychiatric hospital in Tu
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 0x786bfe90567656852f190b8fca74682fd59c1340265d7bb20e8f09397710d974. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ac1601a-37d2-41d5-8389-89d248e387fa.json and https://artists.proofprofile.net/proofs/artist/1ac1601a-37d2-41d5-8389-89d248e387fa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sun And Moon - Originally Performed by Anees (Karaoke Instrumental Version)
Until I Found You - Originally Performed by Stephen Sanchez (Karaoke Instrumental Version)
Muli - Originally Performed by Ace Banzuelo (Karaoke Version)
Angel Baby - Popularized by Troye Sivan (Karaoke Version)
Glimpse Of Us - Popularized by Joji (Karaoke Version)
Mahika - Popularized by Adie & Janine Berdin (Karaoke Version)
Changes In My Life - Popularized by Mark Sherman - Piano Karaoke Version
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 0xa9abab4aa2a4e4242768938df76e5a366f3b682a8d20df84d4adac21c5eb7a5b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZPJ32205257.
Pangako (From Doll House) [Piano Instrumental]
Dito Ka Lang - Popularized by Moira Dela Torre From "Flower of Evil" (Karaoke Version)
Somewhere Only We Know (Karaoke Version)
Wedding Songs Piano Instrumentals, Vol. 1
Come On In Out Of The Rain (Karaoke Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7ce548d3fe9547b8f52db8ccc766d6255b390c409f6235c98071b024e0b615. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZPJ32279142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce6eeb62d172e80bd2411253dec1d00f99e9470d9c3e0566e6bd458c81462dd. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZPJ32279147.
Making Love Out Of Nothing - Piano Acoustic
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fad171828bc2ec5a6b93491477344efc2dbb9cd276a3c302f638765a4baa974. 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/QZPJ32279149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f9e139e4a5e564cd57db3441115067e1395d591124b2bda21fc2f402dbfe6d. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZPJ32279152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae5338726b477a74781ffa1e6fdb74264aac987219e742ce2386a6026ad74be. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZPJ32286287.
Please Please Please (Lofi Instrumental)