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 0x0bfe988a23f6b296ba643d21f355d6cf835055b31a69a034ad5f13369631d56d. 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/b450cb9a-3096-42b2-90b6-dc47b7c343d7.json and https://artists.proofprofile.net/proofs/artist/b450cb9a-3096-42b2-90b6-dc47b7c343d7.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 0xdf507d411e83878823077c6782626262f5e9a5ee94043e10555fc999541d5344. 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/NLGM11944660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0d3f0375081da1f6ca026c18ac4df66d05452620bf6d4287b4667e2243daca. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:36:59Z), 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/NLGM11944664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e656cebcd18e9e4cf6b5dd8e6de2de13067acc63f7d80d9fc58c930c815e51. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:04:26Z), 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/NLGM11944665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e31a9f2481057cf74b4beec1ed9386e4626bb32f6394c512d8afc3509d4487f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NLGM11962291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7647928c5ebe5042ad312ce430e7f40e55d0c0a5530eb8f32a5ec832cef1c282. 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/NLGM11962295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ac5f1a694fc5e1dc4727ebab42034cb89c7723b4aa35b4d7736afd5d14328c. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:55:35Z), 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/NLGM11962296.
Nr 65 Allegro Non Troppo - Versão para piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8040b99fa183fc6d58d7bf9e02758035268f5e52170f10ac847382d120ccf67. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/NLGM11962298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808f6ca0e574e513f52152ea3693851f15e7f738d38ddfbc81550bc919fa9dbb. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/NLGM12015911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cefeb922e5126e53441fde7527f4cb23897d01070ede2bc78553dceb29b1e8. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:25:36Z), 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/NLGM12017592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b42ee68aa16ffae5fbd46370722428c7af3e4bf788739cb16410189bb9bc64. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/NLGM12018382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892e6895f0cdff294e6de22b210833b290c78eae4fd490cae47bf0dce3886c5f. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:06:01Z), 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/NLGM12018383.
Música de Piano Para Crianças (Klavierstücke für die Jugend) - R. Schumann
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7efe115aeb5e30ebf4c6ba0d53b7a1d3f72fc1b8a3980bfdc024a539a67e944. 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/NLGM12031549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44200b2ba2c6cf8446613143f13483f3807d53ca5a8b5d83d186a0b85a662b4. 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/NLGM12031552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf398bfa71c23610bc31221f1333820e09187a72defe18f4004ebad3e461c6ea9. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/NLGM12031553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1bf4895089042e8ca5ddf42f661884a36a7bc162971e9247aea120810a2161. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:43:40Z), 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/NLGM12031564.
Músicas Clássicas de Saxofone para Crianças
P. Tchaikovsky - Album For The Young (After Schumann)
Ma Mère L'Oye - 1. Pavane de la Belle au bois dormant
Liebestraum (Love's Dream), Nr. 3, Thema (8va)
Forellenquintett (Quintet of The Trout), Theme from the 4th Movement
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8e29b09787dfb333bc63df703c7f422a1fa44f939c8f6fad065d76c6de07d4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:05:10Z), 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/NL6VJ2200968.
Em uma Jornada com a Orquestra - A Flauta
Em uma Jornada com a Orquestra - O Bandolim
Em uma Viagem com a Orquestra - O Clarinete