Bouza is a town in southwestern Niger. A town of eight thousand, it is the administrative center of Bouza Department, part of Tahoua Region. Culture and situation Bouza Department is in a largely Hau
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 0xbac581a29b07e5ca9e95f7ee154ce65f2a8cb3b3f5dd881648e47b74cbfa6148. 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/a2afd452-790d-44ae-ac20-1164caa62254.json and https://artists.proofprofile.net/proofs/artist/a2afd452-790d-44ae-ac20-1164caa62254.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 0x701c3ed74aa13cc19633ebf59d20ae6c8ddcaa1976790a9b2edc1013438b869f. 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/BK4DA2215203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68734d259ce45cd7d457fbb8e5d19055ef439456c4bad5e740ec9b6f2df611f. 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/ZZOPM2118096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf170507f0752475b7e759252c773a222ae0706b37f788fef52005e91b7107281. 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/BK4DA2322045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e52def0a338dbf47222aaaa216a05540a9e4dfced7470776b9d896cb49615eb. 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/ES64E2304446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905f81bc8cf1dc41f746de1ac19caf4be93155bf3765671503dfae4d6d3dea1d. 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/BK4DA2201495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ec06dafa56129896d0f258f9dc2f8522aad8697f3a7c6e50bc26baa8012d14. 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/ZZOPM2239894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd26961bbb59938bc591b7788675a14df7e9fed64d83a8ac341b9a6cad432e08. 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/ZZOPM2238244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2a3cd48950bb783acec362986d288560ed2f34084335a2fef054c7666cc71d. 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/ZZOPM2238242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7eab9bc7512d08be92de6a4d568ea3fc5a3923d0be61dfa2b0d1734c6c5eb4b. 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/ZZOPM2237064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2eda18ab787632ed295cd5b97355ec55b66d809078d23625ea86338eb04c683. 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/ZZOPM2234281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c856310408cd39d677cd1cd2a30554e73aeb8a633f21ce51fd5df29875d26c. 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/ZZOPM2230719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ee03b3f33c17df1a63ed226e5f1ed9dbf86b078b5d4a878d6f01622a3b31ee. 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/ZZOPM2224379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eee0177d68b7da46b5d94f6ecdb2ceb0c0f1cbdb433042cc35d30bf21f5300f. 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/ES71G2204415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b4b2f42767d3b7f9e8bcd55a05e19a09fec8ff42e4662750b63e1a67666f35. 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/ZZOPM2119340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c0e001fb5a41e0cd589b64234ec684c97a3f485f0f3a01f653f0406283d7e0. 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/ZZOPM2107500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c48a1f6f0b9f77fc865010a5da8936e13b2b7b3fcec4c08a8ad8074f830107f. 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/ZZOPM2108777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b99469356eeae1f1187d6270ab6d124fdd43300cd9cf0b056aab54b42b94752. 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/ZZOPM2110153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f173e95323dc5c29ae8ae39bd68cf11627842f9a32d96421e2cdeae6dc74e4e. 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/ZZOPM2110154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d66763f1e31c257bdd2393df53d35df2b3be4151a12a809689c38687e8f7dc. 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/ZZOPM2110155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c48a1f6f0b9f77fc865010a5da8936e13b2b7b3fcec4c08a8ad8074f830107f. 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/ZZOPM2108777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c0e001fb5a41e0cd589b64234ec684c97a3f485f0f3a01f653f0406283d7e0. 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/ZZOPM2107500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9a4259f4d98b17fb4eb427d04ad8bbbb7ba31574d4240c71d244cc34eda4f2. 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/NL3BN2100056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6554da0b781ccffb119ea0ac65bf77d5ad54a83650c536b6d717ffe9753e5d99. 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/ZZOPM2106178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d68786b84f249340e26d71c3e730eda3e5f5acec17226ddd79f183eee557a14. 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/ZZOPM2105633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36771e2c78f23a20f5be19841ef5c28984a8dd06fbb2855db0864180bafb6658. 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/QM6MZ2187639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2375620e3fe424679a9b679451932e1551541b4f7701dcc094853b95929e262a. 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/ZZOPM2105206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fab7411acb5e037191504d8b1bdbdea8d9cef77ab740a26ac7f981227e538b. 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/QZDA72194401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95def4110ee7d07aa91e71ae59d7908e4f65252d64f9f5ebef4117fb8818d00d. 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/QZES82104695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc36d53c60ec9e9363b42448e88b4200607049d9cda972d78bfa139a941267d. 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/QZFZ32110309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf575ac3598fe8551d4ca4daf03cc72a6f4a137cafc9d4d14bc18bd2dce5fbcdd. 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/QZFYW2119745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979de94a0f66fbaa90d1b96026f0e97dcb538520068faf30d846a98a3cc47117. 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/QZNWX2082203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1531c1d81e37296a8cf2cb82a3fdb6ab8db4444062ec4e2325b5fad405b1a6a. 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/BK4DA2407531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9418e33d8d112342b271365e9fdb048b22f32ad6639332e79d21137cfcddec75. 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/ES75E2406381.