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 0xdff5a3dc63f98b679ef0f551568b83f60bf5aa7bfb092f114f4d311f0a7e1a6d. 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/2c093b3e-25d1-4f2d-9d53-f7330d0210ee.json and https://artists.proofprofile.net/proofs/artist/2c093b3e-25d1-4f2d-9d53-f7330d0210ee.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 0xac4cf0a4f8b8f6522775d317b0b87f159c86e1b98475fff3bfa89503c1025587. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BREMI7000099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89dc0eda43ed5d821d209b349596f870e52d001acd231cc2a5c432acf3e9e04. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:13:25Z), 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/BREMI7500182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeacfb22925bce3e848bfe119fda1e11150c027620d9ad4d151f4cfd8ea3a851. 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/BREMI7500184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e4f73de617d46b3647e06c854ac90e6632b65adafa4aa0ec4288b674bd8ef0. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/BREMI7500187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf016eaa844be566db23e3449008b30ced4481338cf1d676813c625dd9b4d04d1. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/BREMI6000911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d94e19a34891f20cf8df8723f8f5465bb4bc141b85607305d2c5859c3c293e6. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/BREMI6100308.
Descendo o Morro Nº 4 (Remastered Edition)
Roberto Silva Interpreta Haroldo Lobo, Geraldo Pereira (E Seus Parceiros)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b0aae31af1c9e8ec2db5dd6c4f7d3270d1d889e4c762014be43d9ffa2d4bc1. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:28:29Z), 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/BRUM71704655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3840226cbd2b5db18dd98a25d6bd6e5f288eb0890ad362a5ba21e7b9396ebaf. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/BREMI6800157.