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 0xdc06ff7f0f0f013d2993c0bea15f2440ce0224243fb4b1d55e73cdeed3e7c871. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33fb063f-8cc2-46c4-a5c4-7bd85b26e4c5.json and https://artists.proofprofile.net/proofs/artist/33fb063f-8cc2-46c4-a5c4-7bd85b26e4c5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Caixinha de Sonhos. 24 Canções Tradicionais Infantis
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 0x35dd04f797fa004c975fd944bd5626165f73607d31c076b5443a352a399fb90f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USA371497669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc4124ca277024609838110d8ea754b3dea4d890080edb49ba8e5743acdf06f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USA371497677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d852ab5428c3ccf672756489e125540cf357d92f43f127dd37da55daf10f09. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/USA371497679.
Caixinha de Sonhos - O Melhor da Música Infantil
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74adc4350da4d52071e9be29edf435797e78714278410c5c0a503924b9cb60a. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/USA371497761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11fe208003c8eedbc8001bd6b0a29f1c42ec3646a35ed8312bcedf9493b7642. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USA371497765.
Caixinha de Sonhos - O Melhor da Música Infantil, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b03aa19a5ce2dc8e29f95af03779693d6c95907060dc03eb5009c096014234. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USA371497819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3700484d28f8de18bd8772ce65b07072fe80d930b5c120935fe2bf98e8866925. 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/USA371497847.
Caixinha de Sonhos Vol. 2 - 21 Canções Tradicionais Infantis
Caixinha de Sonhos Vol. 1 - 24 Canções Tradicionais Infantis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf657140c43fd423ec64bc220a5aa58361aa9cb0e8b154a08970de3eda70b8cf0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US6R21218520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05a1d3578e33e517739f4ecb4749f6d1131676b6afdcd47d02f60367138e120. 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/US6R21218523.