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 0xcd289be293cd2b48de783bfe79e6e3fdf82b3c76ec5be05109f55b0a56ae1419. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bf926ae7-97c1-42af-8767-cbe753de1cc7.json and https://artists.proofprofile.net/proofs/artist/bf926ae7-97c1-42af-8767-cbe753de1cc7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Estudos de Arpejos com Padrões para Piano (Deluxe)
Estudo de Arpejos com Padrões para Piano No. 1 - Deluxe
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 0x01056c505e306b30d4bd817e46ac61b307fcd229c5234f81325ff81399f5dfb2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BXXKW2000099.
Estudo de Arpejos com Padrões para Piano No. 2 - Deluxe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1cb5f6eec80f6fdab91e5cbec275056f62f118e8903f148a8d9d9040f1bcea1. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/BXXKW2000100.
Estudo de Arpejos com Padrões para Piano No. 3 - Deluxe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4918c7ab3cf348cbacabb3cf4d5e1e0b72d3be3050025395520497f6468a27. 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/BXXKW2000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767363e0f6d14d49ca2a741e524a47240fdad605de99ddc21a708efc1be541a3. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/BCR102400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcb3177db5c8299c966e035d2109d0486010bf28e6095b7ad091db336fc8a1d. 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/BCR102400002.