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 0xf9472cea1edb1bc0926da8c6f933c0cda7e52c6cda887158080ce4ff0af6ca7c. 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/7caeb975-02be-4e3e-b12b-2273a40504ed.json and https://artists.proofprofile.net/proofs/artist/7caeb975-02be-4e3e-b12b-2273a40504ed.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Apenas Mais Uma De Amor (Ao Vivo No Rio De Janeiro / 2019)
True Colors (Ao Vivo No Rio De Janeiro / 2019)
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 0xa5529713fe24af250362f511d8103d724514b6888cd692bcb54462744590608b. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/BXOQM2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1fa21bf0bee5f0ae534befe01b1212c1dd0e05f4c38150c1b37a747f2af9f1. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:54:32Z), 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/BRE752100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b278738d5d3e12d207acab628ee37f76f8b3792c1a9dad6a409ec70348d9264. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/BRE752100012.
Castanho: Sessão Tune, Vol. 1 (Acústico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10a4c06eb4c8f4c6b9febe4a17ca404cb99e216d1e6ace1970e94e4cb33dc84. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/BCLF52300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782cedcf9c2d80cf6d10a597484463004b07cdd8cf1ef888145292935f28e8b9. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/BXPXX2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86949bfb6b7bbecf9e5e69e56545bf06a1e90420959b17ff111a8fb7a9df8cb6. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/BXPXX2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d4ae50d0997b13304ab50cb4d1f214eb50083382081fd12252c0e3a8c811d7. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/BXPXX2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c69d792632e898dbd718f31038c4403c4687ff5effaffdabf77ce294771531. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/BKLOT2400046.