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 0x3517acf4fc204708f20c4662474e29ac9c829e810c48d5c5fda65adeb06465cf. 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/4627ae0f-5061-47a5-82c4-a888f0a26dc8.json and https://artists.proofprofile.net/proofs/artist/4627ae0f-5061-47a5-82c4-a888f0a26dc8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Play The Music Of Milton Nascimento: Live
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 0x5a4ebb830c29fe17c8ead6b235f3013227af68cd9f034cb3f86be85af6e48878. 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/QMBZ91389321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e94e7c3ee173ac1f051920487e56e0a3e4972c705517c0a2e9c15d2555bf4a. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QMDA61475316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cf00caa15d3d9a72ee62b1c5a888341eb4be1ad21c57e142d186b8d135da89. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BRRGE0800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e20f2cab370c410a86ce3356fcbeb0f60ae1eeeae0fe0365d08d61a7224363. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM7UD1400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58c4fccfffe2e5c350ee7ba59d21f024dce656e364ba16a96f13c769219bc13. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QM7UD1400014.
Samba Do Trabalhador (Ao Vivo No Bar Pirajá)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7293fa756443a83324eac85e07fc04c69095ebaa199baddae4ea9643947bf4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BRUM71701352.
Welcome To PEDRA BONITA - Instrumental Flights Over Brazil
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8e2cf599887d28caadf52ccbcf19fe151174ea7244b40cb9d7a8d2d55d24b0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRUM71300846.