The Einstein Classical Music Collection for Baby
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 0xeb3f477754f17cbb6c7a8a7795761d4298f2bc26b0ed1b44a905d9770820b119. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bf7556d6-167a-4399-80c5-c38165e401d8.json and https://artists.proofprofile.net/proofs/artist/bf7556d6-167a-4399-80c5-c38165e401d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Classical Violin, Piano, Cello and More!
Mozart Lullaby for Baby Sleep: Classical Sleeping Music for Babies and Children
20 Klassische Lieder - Klaviermusik für tiefe Entspannung
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 0x8b94c7bd5c78b668ddfd67c597631e59be9e528c5b3bd3b89416cff04e86545c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITO101781359.
One Hour Classical Piano for Studying with Chopin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863b48ced8482c4301d409918b7db7d1aa73bb7968c2223823171fcafa702783. 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/ITO101507884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e090368ec003de07b2aaaf1ef52a61fd4c205e14020e408fae78866db76935a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITO101507883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6070393e58f8e422c0a6a4cde8ed792589152aaa34b551f14aaf4eb7d98de03d. 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/GBPS81400017.
Ultimate Mozart for Children - Mozart Classical Relaxation Music
Sonata No. 10 C major, KV 330 (1783) mov 2 andante canatbile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9c1f3a8b740c4451c72885b49a589802d431199b9bf6b74e58b34a4ffac3c1. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/ITO101051554.
Sonata No. 8 D major, KV 311 (1777) mov 1 allegro con spirito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1a9c1f3aa799c02f6f0936286d8de571ace35a2b1a28ef9fa7c099e5140b08. 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/ITO101051555.
Sonata No. 16 C major (Sonata facile) , KV 545 (1788) 1 allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa099b328b117d9bd70ba53d684d69e958f1692e0bbd26954de3875125ba45d87. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITO101051556.
Sonata No. 12 F major, KV 332 (1783) mov 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c409b3979d3ac85a2230581813beb12699ff0380e204abe86ed343ee384ca5. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/ITO101051557.
Sonata No. 13 Bb major, KV 333 (1783) mov 3 allegretto grazioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac20f06e4e3d302e5b1394ded88670f458758cd871cc215d91d0819d3bfe89b. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/ITO101051558.
Sonata No. 11 A major (Alla Turca) , KV 331 (1783) 2 allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506fb7bb3198bf467c445119104e016135adf666e2cdd51806de4c54aafa5404. 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/ITO101051559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f0aba0f3ba7ef7daad1a462618417268dc83f9f0a433f60358031581ebea50. 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/ITO101051560.
Sonata No. 8 D major, KV 311 (1777) mov 3 rondo allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413c68a41d5d89e609be40f0a4dac888ebaa64f0555a83d75b247f4686f72951. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/ITO101051561.
Sonata No. 12 F major, KV 332 (1783) 1 allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece8d493bdbb343f8b124eeb604a09a10d7a727691c8f0fd32eafb492eb9e583. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ITO101051562.
Sonata No. 10 C major, KV 330 (1783) mov 3 allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e94d61b8b2c32b3acaa9beac6ddc80fd4f165899723e62e805e4d8abf7bd354. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/ITO101051563.
Sonata No. 12 F major, KV 332 (1783) mov 1 allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeede70cab0112068705001dff3a5b72583d986983fc8b07df4c42d6280d81420. 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/ITO101051564.
Sonata No. 11 A major (Alla Turca) , KV 331 (1783) mov 2 allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d8a1b8bd5b829a77e4a7541879ab5893d47bc4c6f7777d08ecabcfb2d8949f. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/ITO101051565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a255e09e9d7b1cce7cd82552d703456efbee444928bf52ec94648830cba5f3. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/ITO101051566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624bca860cddfc2be427a3c3fa518baabf5a9d24bc5c51b3932a05139d79c537. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/ITO101051567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b173bda038151ac48800a5967a6f0f419c01374ecf648c23046b80de2c740c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITO101051568.
Sonata No. 11 A major (Alla Turca) , KV 331 (1783) mov 1 andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aca9fe5bc772e8a5a05d2f0b4c0a54a0d35ba49f5b21d1dd6b023ef5d71cac2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITO101051569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068943e54a69bbdf4bba81dda991dd24fc1a1bba63c317b7bba636d6112550da. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/ITO101051570.
Sonata No. 16 C major (Sonata facile) , KV 545 (1788) mov 3 rondo allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0d5782ed853ad4d956184106ace32cb0b5d457e80769a21296730fe3088087. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITO101051571.
Sonata No. 13 Bb major, KV 333 (1783) mov 1 allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f65a87ba5af97a84759e823d40dc1e857006f7c3f79cb5e7d5d7efae7590691. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITO101051572.
Sonata No. 11 A major (Alla Turca) , KV 331 (1783) 1 andante grazioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317fbff4b32dd203589642bcb235351c70edfd2130d993e4ec041bf000dc0d95. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITO101051573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0613272048690f2b506320c7e97f87f2efa15980e9f08eb9e32165c0cb3ca08. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/ITO101051574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadca76420796dba5fcc41febc1a0288af399990812572c2e6a1680aa6fdaba4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITO101051575.
Sonata No. 16 C major (Sonata facile) , KV 545 (1788) mov 1 allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1b3013716e7867db80beca28bd68454a0aa08f5c37c351b90b746d325e6a5f. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/ITO101051576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f47841bf9738ac4960a0f11992bf02d8b3a66190c1a67949f5982528bfa8974. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITO101051577.
Sonata No. 17 Bb major, KV 570 (1789) mov 3 allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddff4196ee13af842cb9331dd6c520140c0b979ed8bb991bbe2dab22cedb98f. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ITO101051578.
Soothe your baby to sleep with classical music
Studieren mit Musik - Klassische Music für Studium, Mind Power, Klavier Entspannungsmusik
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4869e3b42a842229c195287dd8c354c77b5d837e895d0ad803f7ba22839fad20. 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/ITO101781357.