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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6c586d423b018c048e2bb0b3058fb04ff3f220ff793bd100f96d1d61a0123f. 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/c4113389-6739-4368-b667-6b7ed40463a2.json and https://artists.proofprofile.net/proofs/artist/c4113389-6739-4368-b667-6b7ed40463a2.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76f63f1bd9f9e6ded10e4c917b38768c88e33f47a3faa1ecd2341361b43f4ea. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BX0BA2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f3d4b433744c8ba26c9bce79c32f008720498dd4e21d7cbfa7b036a74f222d. 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/BCCXP2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3ecc8bb49b1f171af6c5c3441aa17f8ac43c61c2aa9daf34bfb81842836f4e. 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/BXQAF2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde620f2768ee3762ea48289583dd079c26f23da0600e4f37984b020e3cc1fa4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BRX6F1800106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc61c2232af75705f672ca5f6b79127b3e5e78f5243d097ea596488426562a8. 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/BXQV72100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9d71ace230a2630924c8d2d3f0d41b62465bce8a6684bf66c7670a2fd0dbec. 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/BRSME1800020.
NADA DISSO É PRA VOCÊ (AO VIVO NO ENGENHÃO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0228a3512ed7564c31248c1f4b60ea718002acbc2ce809c2c5594e338a0b1a. 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/BCCXP2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe044afadae9167092943800097d77e1e58e35385191067d2fe8789f50a0727f8. 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/BCCXP2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1671cb9bfb86bdd9f922b5c0ec690501efc0574c364a5de6c91e5ea456886bb. 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/BCCXP2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792343af9f7d594ea5020e81d981cfbc1b98c16d780317445deefba06b53c858. 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/BCCXP2400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666d42669dbdc92ae17361ba950885f0c1bac0ddc430e1b4c60fe9a51114d28e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BCCXP2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d660c95d929ac300fa930ce745f787caad2b7de43c7958cf7ba437e7b63da0. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:59:49Z), 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/BCCXP2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ef03c53f6a71ac3e05a57b7204ea2ceac0286f26ea8ffc352c072d14437705. 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/BCCXP2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb87082d70d189c548cc91c042685dbf8179bac2e347be2cc276f3deaccb6c8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BCCXP2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae03884dccfb20ebba0e1a296e0d13da799834aff5c77708b40adb4c2d9158f. 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/BCCXP2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0228a3512ed7564c31248c1f4b60ea718002acbc2ce809c2c5594e338a0b1a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BCCXP2200003.
Pluma X Clara X Sofia (Live at Artsy Club, São Paulo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe161859588f713a085b264be18996dc566af0f87a3b840d659ac344b310d3c4c. 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/BX18W2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c789348a0b2186fd607215fcc0b777b117777663b349af9e819c83c4e7b831. 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/BX18W1900001.
Malandragem (feat. Clara x Sofia & Raphael Capelão)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b46896d069e54306a72e4e6ed87fded93c408e25373d5fc0f78037a267bf11e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXBB91800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7302886f229d63965a8e00fa81365d47f8131bacfb39a8dabdf0f789ef59f6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BRSME1600895.