Cindy Thompson (now Cindy Quainoo) is a veteran Ghanaian gospel musician. She shot to fame with her song "Awurade Kasa". The song was subsequently used for political gain by the New Patriotic Party in
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 0x0c33c9cc5df92cfd1dbdb83f860e0d730393030e43273357d50285481434b866. 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/3aa20958-efab-490d-bf66-594ed605b806.json and https://artists.proofprofile.net/proofs/artist/3aa20958-efab-490d-bf66-594ed605b806.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 0xe4436790cec873c75bbb1603de2ee14ea05af3636b0a9963b4ed337ac342d052. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/FR10S1922041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecab2c7ce3dbd3af6f8711f158a055a38a32aeaadbc6de01c71803d30aad3fee. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR10S1922047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4234a119f645e3384f1b6a7df76b6f203c69aa0d1a7e3fb940bff36055e6d78c. 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/FR10S1922067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e58e9f90c09ab8f0b9a2d07694167e57a05b4ae54291526af8eda7c104dfdc. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/FR10S1922068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbbc64a873ff9160c48ae8244b1075d4865b39c67861ea7a8e1632e85f9792a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR10S1922071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36991a65cfcb9e63eb59918aa471d90c66ce46fd83137f324f429a82d5d8ce30. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/FR10S1922080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ee3ac64f05c05d6e38e234dbd9b29a76c576667a38ebed2c3bb13244a85282. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR10S1922055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba0d4b166748a3abbc4e164b4ca57f2040ccedd266ca757b74da7d2ad74c321. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/FR10S1940945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaecb69bc58f035fda59169ab96a2b6faebc7288da7623cb076bb6f90023d2596. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/AUMEV2541825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4234a119f645e3384f1b6a7df76b6f203c69aa0d1a7e3fb940bff36055e6d78c. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/FR10S1922067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbbc64a873ff9160c48ae8244b1075d4865b39c67861ea7a8e1632e85f9792a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR10S1922071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e76dba65e92f65b9d42e6b59271f10dcf6c0b83bb9241f36c8c66ad6620116c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/FR10S1940944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36137d9bfb79e0a969ef08df956cc4929ed195eabcdcba7b3b80bcf4a0d62ee. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/FR10S1922076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36991a65cfcb9e63eb59918aa471d90c66ce46fd83137f324f429a82d5d8ce30. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/FR10S1922080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bd2d0a8433563ba8a5be3f3b8b6fdfef490a79f0699799fbfec427e9c01d07. 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/TCACX1751148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d1a8943262a13fad7fe309087eb6e4020761499cf6f8e46a612479325abc27. 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/TCACX1751150.