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 0xe96d201cfd060d7927a4d1f4b224c35e74ec0b8336ab5821fcb8ce202dbd78a9. 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/f0aa5b9b-2125-494f-92b0-3c2ae0421d2c.json and https://artists.proofprofile.net/proofs/artist/f0aa5b9b-2125-494f-92b0-3c2ae0421d2c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mozart for Babies Brain Development Lullabies
Mozart for Babies: Lullabies for Brain Growth
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 0xb5cdf7859c683fe614a0821a07b146cd830b8672bab75881d48c0738a00b2891. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZWFM2495054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed123513eae2aa99f4d5ebec2c872a515c5a73490d3af98fb69b2e0dd423293. 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/QZWFM2495055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88922df8958214bef625797a88a05b03d251d232866481ede1b0cf7b45825ef. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZZ762422011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d06395cfad596d3d50f3510a22808760ffdc93d94b0761f4c9caa4a3cd306a. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZZ762422012.
Mozart for Babies: Lullabies for Little Geniuses
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dbd0e6c121c3fca2a794a55d5afce1ecd480742dae15571d43b1fd082663477. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T13:10:36Z), 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/QZZ7X2477307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4dc78951037bf3d6e31c0e6b17d9f6b180148d64c03862cd30af3e2d0a0ebea. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZZ7X2477308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c93e692df14a3d8646bd3f7287ad167f5c92d693511dc738f7abc6e1df0c94f. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZZ7X2477309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987b967bc8baf2b232d66df6c36ccdf883e3c1726db90e9d9cbb20a2ff1b849a. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZZ7X2477310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ea7adbdd97db8b01642ea252a1dc095b8382d67f81d0b449a74ab4acfac548. 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/QZZ7X2477313.
Mozart for Babies: Bedtime Lullabies for Brain Growth
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2bd02b96d1a4051726b5ed8f06674a5782e35398fee18f2ca1c1270b467e2b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFYZ2577283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a033a3e83228aef451f8f412990449912b548a23441bcf3a510e91a735df409. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZFYZ2577291.
Mozart for Babies: Sleepy Time Lullabies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371d7dc172385caf004bde0d2910238a7e4d6e2bba6861436a359cfd9dbd8f01. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZHN42539543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1be8d4d629d1046afe436e2d91e22f4183129284c21b2b3871a396f574e7931. 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/QZHN42539544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b5ed32886bfb1c95c56a14bee5fa475f969259720eda8842bf8907b92fd944. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZHN42539551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c21252aed4288ac68f3bf6b20d66486d51d2943e8ddff8a2190478ddf8cd77. 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/QZHN42539552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fc44862d665e7d4e63a1817dd343668eac996ec21408aaff48f83405fca353. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/QZHN42539553.
Mozart for Babies: Gentle Night Melodies
4 German Dances for Orchestra No. 1 Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a89c88dd69133931c2220b4f8f4c0292af32da18bc5e124b5d08f889391657. 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/QZNWZ2556976.
4 German Dances for Orchestra No. 1 Trio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b54617e758a5c38ae12f824f3ac40eabafd3ea564ee25dfb7dc26303ac93ea. 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/QZNWZ2556977.
4 German Dances for Orchestra No. 3 Menuette
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2fe3882727a26313c978d1a4733daea596597dc30b50d688da925393fb130d. 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/QZNWZ2556980.
4 German Dances for Orchestra No. 4 Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c60b8316316ffc87425f332ed95243c9a1295455e0f7733f161197512d733d. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZNWZ2556982.
4 German Dances for Orchestra No. 4 Trio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3c7ba9a71eab806c32ede9dc89b10351c5ab33e57e6c89938d7ea6c046d50c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNWZ2556983.
2 Contredances for orchestra No. 1 in D major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2730178cf8a515acaa818dd3d10107187ec8944ea2d58e80a5d8da109e58f3e3. 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/QZNWZ2556984.
Mozart for Babies: Gentle Lullabies for Sleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bbf371394065e7f676bfe00efed27b6b5446bffa04e07355358f3df6e0a957. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZZ7S2521553.
Piano Sonata No.11 in A Major. Rondo alla Turca
Le nozze di Figaro: Non più andrai, farfallone amoroso