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 0xaae71cdbb97afbcbc0998c86a733541c53d03955b1bb410dd4f50d94be0ae2ee. 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/efadff6b-e176-4a5a-be91-8c6d44a4c2a1.json and https://artists.proofprofile.net/proofs/artist/efadff6b-e176-4a5a-be91-8c6d44a4c2a1.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 0x4877b5062585da1aacfaeaf1a285384175aa1cae062ae5b25435f79f4732f08a. 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/BC9YK2200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01bf0aa9336d640a8d7d09942a8152598c49ae46c49dc568c159778b73b2965. 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/BC9YK2200055.
Você Me Vira a Cabeça (Me Tira do Sério) - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd969ab52c105ca8965ae0b4c03a7a12708289f5724812e0f67b188f5dd03dcb. 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/BC9YK2200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2cfbda1946a6c80eef958cecdf5302fbdf6bf2f17659fb04b5a96231d1daecc. 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/BC9YR2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcfc38f5fce782cd6ea039a9789c8f05a08bc2c706a928158fa33e1c35d095a. 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/BXTB11800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ee809ce270cb41c025b2a8c14ea68e03049b34ae6b1352166a7501e3f0d33f. 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/BXTB12000115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec2555a8b239b3a0ea807125a007dd5b7c8b600914a1d51da61031e383ccb3c. 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/BXTB12000129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893a02762e5967c1f272803ccabe17e2fa65a4a6e92d70648b801ca8ca24fc74. 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/BXTB12000107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd0fec2f6c8bab94a6693e6974477818408e58d677947d70033a2a33421c26b. 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/BXTB12000119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802627261580cc262793d60b27b7d0463ede976aa62e84e3aebd13fc21c6a21c. 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/BXTB12000121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde601a65d489a9cc1e5fe12759263041a672c2023fbd1b5ad15d424c1212d53. 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/BXTB12000123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cebe1dea3da8c4900a4ee9b0728116fd696a1c4012c70b19495268a9347ad64. 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/BRIMT0300175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa241925eac6d64f898098660c9235b6c8e26182351941e31b5dc4d9be10efbf. 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/BRIMT0400444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb009198984d24b96cac960c34027c513d71faa08db2293645ff086a7d3a85cea. 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/BR5K41400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0023e30c459272f55a5afdd9b21941059f3266271621295ca7a77be22fd63a6. 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/BR5K41400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb463c1d35932f4394b0a6535f17c40d142e4bcd0ce8a998ba7426bf33254d286. 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/BC9YR2400001.
Ficando Sem Você / Fim De Semana - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98b5602432da8766ec3ae455079d77ef956d8aaa7edb6d863572b8041b44aed. 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/BC9YR2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4b0f5be2b65e2f7890faaeb09a75cf203e9d6dd201ccd09c7566aa76548a3f. 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/BXTB12100075.
Piscina / O Ipê e o Prisioneiro - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612b6fc9aa390a7fa669cce48597f5a523fd029a3bb2cb78ca488c3ea2b3f253. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BC9YR2400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd755c157d165a8dac4ce9af9591a70fb715189e6685eebc4cd09d8c1f416078. 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/BXF2L1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001d385a6dd72acc8cfad5fc805b516958118c3a6564c3ae7824f4442d8127eb. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:52:54Z), 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/BXF2L1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efa4e7a452630d32733757bc0c74bbceaf8dc995001541a21c197daa3e05dd1. 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/BXF2L1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ade22be43fe03f4576114f127f7cf873a02cdc1ad9084a576b8e228ebb2145. 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/BXF2L1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5706d8724ec8b92e3819fea209a18491714c9216347bd2c3f7ab4e9ed8bdc4. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:29:54Z), 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/BXF2L1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75765bb41e3626d436219fac4c6339abdf70ba26b222e300ef7ae2ca4db4fc99. 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/BXF2L1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5125aff2bd64cf89a657a391192565b9d1bfb6d77fb9391acbb4da9079ab7be7. 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/BXTB12500210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf615b6c4128075caba86416d5c68ea91439f73a61389bb7d62fda801f6ea89fd. 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/BXTB12500187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe0ec5041df28052af6903a1486e150c5d80f0227439b9a62f5bd5ea5de58bd. 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/BXTB12000225.