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 0x88f208875a98bb567e89e0fcfcee04df8d14b0a67ef6e3fb79bf5feae0a203e0. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/26f1d813-a968-4b12-b20d-0f05c11ded8e.json and https://artists.proofprofile.net/proofs/artist/26f1d813-a968-4b12-b20d-0f05c11ded8e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7274b664565053ee43a8b73e48834451f642fd2791980754f7ebc5ce91f75624. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXRHI1600033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b0abe8d973405eb8d87e38f49be219620bc60819e92954a88be307cb292fb8. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/BXRHI1600026.
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 0x91744acaf1b1cdbe4feb4ce181983da07defb938cfa3a6cad30f8ed5ddec3ede. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/BXRHI1600027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c72263c1f829db4f32558afc4dff9bbd4dc335ea0fecf0d8f3d1e8088fab6d7. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BXRHI1600028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65f97818013ce5a41e84b65fe08ed8f7f828fc2c39b00b75e62198d4d473582. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/BXRHI1600029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93a182fa1d2500da6a42d4ac6e8b45d126e23878801b8927b2e7cbce8b7fdc2. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/BXRHI1600030.
Sonata, Op. 15b in C Major: Allegro Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11868fb54bf93646b21b75fb6920b4f41901241c1ce983b53f9d17194c87db1b. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/BXRHI1600036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1532a98323993d649021a7e0cb4e70a6ab5610fb3e273f68b143071fae70fb2c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USX761214914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab77a750ac5fe968c0887c2b51e6dc85212de4cbd0d771ee2fe5cd478774ac5. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USX761214910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9afe2b7498598f62782be5dfa32a8eca672671b3d6468f9d4c630aa82d20b7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USX760904401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f74da6ef61fb2c319d5cc5742d9a47807aa08769aed82f610d8c3d769670c06. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/USX760904409.
Guitar Classics from Latin America - Vol.2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597c2087fa430e4d0a6cc646e0b27f8c3ede3a9e9340c9cc6f69322c5822782c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBLGL0809210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf92e8ceec092516b095f358d904e0c6d2146fabf09b1ff7bca7c0f49ab0381. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/GBLGL0809208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe38c245e97954c98e94a59912370a07ca274d8784c0883aa8811de62c6ed84. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLGL1241214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdaf11ee4c96e0f7cbdec7b023f1426ce07ff4cd395d4e6689fa7ed1f1d5e3a9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLGL1241216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe639ae9b28357ac82660cae7e39767bc9b5d318d2bd6cf89a9c526a961e1ea60. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLGL1241225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9e9c5fc704c27070849310b2da9477de4f1416657b3a4174d35c4744be1d1c. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/GBLGL1241217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad41ae1c67815a34805ada2823df67d5d140f6f0d12998362c7490e5380ceff. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USZDG0600719.
Concierto de Aranjuez for Guitar and Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a7ffba2a52de6470eee5eb80e1326d8df2b8c30e7064848a46138d8300e51f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEA580800159.
Chill Classical Guitar (Quality Relaxation)
The Essential Latin American Composers Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c35c4d965f9f692b6d88d38101ed8e6573605dde024f511dd2fb2c224e6cef4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USX760812313.
Suite populaire brésilienne, W020: I. Mazurka-Chôro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad41ae1c67815a34805ada2823df67d5d140f6f0d12998362c7490e5380ceff. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USZDG0600719.
Suite populaire brésilienne, W020: II. Schottish-Chôro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b89d7f135b0f7c9409d7086cc7ff5d670bed94840e4b8aca3db7853cdf34e5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USZDG0600720.
Suite populaire brésilienne, W020: V. Chorinho
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7725eb06ce64a8bcc8acfe7c9be92bcc72e9066b9a0ff821f0ba1ec204b79dc9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USZDG0600723.
Classical Music in the Movies - Famous Film Scenes We All Love
Presto! Vivo! Vivace! The Fastest Classical Music Ever
The Greatest Film Music of the 1970s, Vol.1
The Best Latin Dances in Classical Music
I Like the Guitar! (Menuetto Kids - Classical Music for Children)
Work From Home: Classical Music for Peace & Calm
Deep Classical Calm (First Class Meditation & Relaxation)
Ich mag Gitarre! (Menuetto Kids - Klassik für Kinder)
Classical Yoga - Meditation & Deep Relaxation