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 0x6c6a915faca2ca1c63dfc83289f458b663e96f81fbff9636bc6c6b58f6b82796. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e9cbcf06-7ffa-40f8-849a-fe8f706e7ab5.json and https://artists.proofprofile.net/proofs/artist/e9cbcf06-7ffa-40f8-849a-fe8f706e7ab5.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948d7a9dcc3213306c54f78902e4814f6d06dfad2c287a2aaeeda0fbc4362a85. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BCQOX2200086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c099ecb320441e98ead2bf7b5b30f63780dfbf7a5b35d100c8b93f8804254e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/BCQOX2200149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08cbc8787ee5a47306f5004c584e822f65a11968a4f864af205559d6fb8e7717. 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/BCQOX2200150.
Mano Não Toca na Lace - MNTL / 2 Minutos - Ao Vivo no REP Festival
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c4ad15ee74a1ca3de517bd0a1ad117939ba9eb846b5834c81684a4f57b5848. 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/BCQOX2200101.
As Ruas Sabem Meu Nome - Ao Vivo no REP Festival
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d8d829cc73377402268d7e1d4654ed14adfad57c422ed03ac34306f6ea83d1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BCQOX2200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28931e4641cc6f949b50cf00720a4e6bb0e5d3cc66af28d4c9760d640e7ac49. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BCQOX2200105.
Quer Ir No Meu Show - Ao Vivo no REP Festival
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1eccf10dda4982d9914f43a8d3f6364c579f4ed1f9404acb090ebbc6a4fd90b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BCQOX2200031.
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
Clima Diferente - Ao Vivo no REP Festival
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4413ed43560de255adb635cb8b566c89dc34e62bc2c9f54d9724dd7c9f1a4f8c. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/BCQOX2200084.
Baby O Que Cê Quer de Mim - Ao Vivo no REP Festival
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a11164cbe17f9a4d8fd53bb8c4dd5940c5ffecf3bd2049c619ab12cb3101f5. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/BCQOX2200085.
Set Br da Tijuca - Ao Vivo no REP Festival
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e947c7b429de566ddd7ddb04e6a7d044b9f04bd3a56bf4ee09c08a4dedb401. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BCQOX2200087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2efe399705333d4f555393a8306a293c4f597a0f4e81a71953bb29663a7b9d7. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/BCQOX2200088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4872a3d2cabc6c1124258e86351936e770926320882cc463bd13f31351b62b1. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/BCQOX2200089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8380b5ed65b411c87dd203b38a5a5f14b0b595d19707501c5c45c0e860a1f7. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BCQOX2200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a2889aa33e6fc35baf3952b26dc7e42c171eff5c2c0a5a687a7feecd3c28b2. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/BCQOX2200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9089990894235fdeb85d51d5a1aa067d90e135215ba8231e4443ee30ca6eb8f1. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/BCQOX2200100.