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 0xeb5f132a760aeeb705a31e30434d5186f55f07910771e936996275c6fb11bb38. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c52e1879-4695-4697-b0e7-ec938b8de627.json and https://artists.proofprofile.net/proofs/artist/c52e1879-4695-4697-b0e7-ec938b8de627.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tirando Onda (feat. DJ Rodrigo Vava & MC Tavinho)
Tirando Onda (Remix) [feat. Mc Tavinho, Low Disco, Balma & DJ Vava]
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 0x2ea1158c8db58aa58a086ce6820f523b1fb11b6d511d382a47c9a44b2f40d728. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:05:36Z), 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/BXTMX1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67214c42e0fa084a00ea6d589ae51ed329b8948539f184702bd9704787c4ee1c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BXTMX1900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f8021afe19e46bb46aa42b92df78655c5f455d44cf0e75f9e0627327781c27. 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/BXTMX2000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa164b84fea499fac3d2fa9e760c8d15bd841b86501a0494e4b8afdda88c3c8e7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZHZ62080891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3a398f29465907746d27fb7422614571eab03f90eb6d3781e332524806696c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BXLVT1800003.