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 0x349b714e8850b0abd8464d2582f57a58034faaf5a3d4f3d205fac488f958f141. 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/3011e4fa-a000-4d70-b102-12dd7cfb6794.json and https://artists.proofprofile.net/proofs/artist/3011e4fa-a000-4d70-b102-12dd7cfb6794.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Piano Karaoke Vol. 1 (Instrumental Piano)
Piano Karaoke Vol. 2 (Instrumental Piano)
Piano Karaoke Vol. 3 (Instrumental Piano)
Piano Karaoke Vol. 4 (Instrumental Piano)
Piano Karaoke Vol. 5 (Instrumental Piano)
Piano Karaoke Vol. 6 (Instrumental Piano)
Piano Karaoke Vol. 7 (Instrumental Piano)
Stranger Things on Piano (Instrumental Piano)
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 0x9ab24a306083cdd71426664604fa5c39226e4bbbc65a033c06177241df9ea317. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/HKG292200401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb01a0a0fc70fe1a812dd550eda60a39e82033273c915384fe7524ce1f824c5. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/HKG292200526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb70e220a44cf84b58481d07307e6ae2fde7a0735ca24bdc9925e6eb0f33f510. 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/HKG292200535.
I Don't Think That I Like Her - Pure Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9eb86997081bf618e54afecaed26d678e8f59ac1a3ffadceefb773058b0d030. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/HKG292200548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7ba33ca2c70772d4b2b76bac8d8493e85b89386b21554267a092cc460ee576. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/HKG292200576.
Christmas Piano Pop (Instrumental Piano)
Ballade Pour Adeline (Instrumental Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca918e01a1f625a857fd451b33fa6aeb9b83795657888e6328667a1c9935e0f0. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/HKG292300110.
All Of The Girls You Loved Before - Pure Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52521285ad9ff2be2903e86646babaf4c73d3f7edb5b5289c10a6a26f4b253c3. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/HKG292300185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb0182344299e152d48341cfbfcf85001a6443638e8f0c9679669f5bb56cb0d. 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/HKG292300347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef335ee5d59685738160e96165d8d47fa6539ba8732fbd6adf35a0e3e202b84e. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/HKG292300507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeba83e548fc0d620273fee66f282e106b7936fa19a86f400c0cc3d484edf010. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/HKG292300509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38858470080e109452416cac171723cb334dcc5f19c1988d36161951734489c3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/HKG292300516.
Piano Pop for Swifties (Instrumental Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd53a4ba94329eedec96773658d873753db1ef2776969f76031d71f42a08433. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/HKG292300696.
Pure Piano Christmas (Instrumental Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b8fdae6143954a938825c3d5756497acf942da18a437c98bbf9db7605b004a. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/HKG292300846.
Peaceful Piano Vol. 1 (Instrumental Piano)
Peaceful Piano Vol. 2 (Instrumental Piano)
Peaceful Piano Vol. 3 (Instrumental Piano)
Peaceful Piano Vol. 4 (Instrumental Piano)
Peaceful Piano Vol. 5 (Instrumental Piano)
Peaceful Piano Vol. 6 (Instrumental Piano)
Peaceful Piano Vol. 7 (Instrumental Piano)