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 0x39745a662c3ee7e0ceae34293b1d8c1f0e4b72efb9ce3f0651a7d35b43597892. 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/abaefeca-9ad9-4eaf-b2b1-69bbd2a6212c.json and https://artists.proofprofile.net/proofs/artist/abaefeca-9ad9-4eaf-b2b1-69bbd2a6212c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lovezinho (Ao Vivo No Rio De Janeiro / 2019)
Devolve Meu Love (Ao Vivo No Rio De Janeiro / 2019)
Rebola Sem Pressa (Ao Vivo No Rio De Janeiro / 2019)
Pézin Na Rua (Ao Vivo No Rio De Janeiro / 2019)
No Morro (Ao Vivo No Rio De Janeiro / 2019)
Pézin Na Rua - 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 0x1a8fde9aaee2656c2b687008e481089330515276437047b32aa59cb390ff0be8. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:25:43Z), 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/BXVFF1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1973da7add181c0b2edb8f644ed8cd57f06fadf937e889950ee34a1aebc87a1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BXVFF2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47cc9dff7c1900ae4a5919bfc2312118814cd3db9fa804118be6c8fab0ad310d. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:28:50Z), 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/BXVFF2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1973da7add181c0b2edb8f644ed8cd57f06fadf937e889950ee34a1aebc87a1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BXVFF2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4570d6992326967b2b37704b470c837a30a2737877d835dc1d8c86bd609f1f4c. 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/BXVFF2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd595777dd15c09063f32e662478eb9671ef8c57cc51696825b31c84009732e1. 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/BXVFF2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4570d6992326967b2b37704b470c837a30a2737877d835dc1d8c86bd609f1f4c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BXVFF2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63aaf7cb9ffbe221e78e058ee79db59d17b38e1161c3ae4446a7bef4f9309d32. 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/BXVFF2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996d77f43b831604135f582a176639d348c955b25ce333397e360c5123953728. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXVFF2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617facdf68c333d2970844def51cee5c3b49c5d41fefbe36507f686702bd3c70. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXVFF2300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496a751d88d6e53c9d2b257d4d4b2834e1686b9062ab85a8c7dffb0c9376a75b. 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/BXVFF2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa203c7d5a0f30fae559be798fa77df07fae9f2f5639a51c6ef1788f31c9b4d8e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXVFF2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7105584c8971fdf84841e555f37e26af4f4dd990b0554055d5286eef05b2e190. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/BXVFF2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070735d648343c7aff0f97c84e9db1ef026abc9aa77ee44799179c545c91cbe2. 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/BXVFF2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd595777dd15c09063f32e662478eb9671ef8c57cc51696825b31c84009732e1. 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/BXVFF2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74474a74b61d66443f1cbdd89d914a68bd5e9427329c3fe1b7f9865bfd01ff50. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXVFF2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71264594ea7303a4a790aa16e7eda1d1f6441a328d2b46f5c7f1f3aba1e716fb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXVFF2300022.