Seydina is a given name. Notable people with the name include: Seydina Baldé (born 1977), French actor Seydina Diarra (born 1994), Belgian-Malian footballer Seydina Mouhammadou Limamou Laye (1843–190
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 0x59510226d12b56044dd5f0ab835466a1183f7370a93417684abc7793adf6c3c6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ca32e3b9-8807-430e-8351-9f3de3726af1.json and https://artists.proofprofile.net/proofs/artist/ca32e3b9-8807-430e-8351-9f3de3726af1.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 0xfae61f8e8b318acbba824dccbf1d5fb35990710afe5f29c78ebbfdc5bd4e9124. 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/TCAEE1940644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6358afbec3f09003c54e5e1397304d28721d659516278ec25b0f4d96b52fe2. 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/TCADE1716770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef57ea06b95d91d8c1debbe622297fade7ee3dc00e4fcbba0a4e1e048b79b9f4. 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/TCADE1716771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d1fc342bdedb37571f48ffb9a64bbb658a78ca6c928f2036f843741126d790. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/TCADE1716772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5588ad3ddc3adec31a7d4fcf9811b6399ab8ec82793fef014a94a0d952551ac. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/TCADE1716774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95bcc1ed05d2c579c61e48fe1fe24ed208fa6ccc0e505ef35d22dc1a81ded7e2. 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/TCADE1716776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8dacd4bd5411cebf6943c7fdbcbda3d594e11bc2640732864129dcc10834549. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/TCAEH1994834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259b93903d38fc163856781cded7758f4ddaac847f4867043450fb7ded4d90d0. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAEH1994838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06415c1d88a8b51456a2b62d9e928abdf81744683f68c782a4e7d237f3f0b8ab. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/TCAEH1994848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544bac51680875e5ae0998159470a3a82a3b946f3fbbafd272e85c07254e2906. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAEH1994857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669292ccc95e346217df78e69e8aec3161ceb8d7cc02a7be416d2983543de10f. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/TCAEH1994869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c58f0656fd976bb981c6f591719eb526537b7ba97f11fb176c9b6a1cca5d1b4. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/TCAEH1994881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf122c1b7074cc636a4f68279b9362a721ea011d5d9ed2c7c809e6901c83ba7. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/TCAEH1994886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396c7c363ea582ece37dcda2f3a3df849490364d2f1a230e94eded4dd02539f6. 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/TCAEH1994903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e1fcc220cd9e895cc2f1444b3e075ba35ce4f009e08faf854f4f469a3f4a99. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/TCAEZ2063098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd703d57dbdd455ae38a9aef1ba5f2e6456c597005a3d53af87d25c5274994c42. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/TCAEZ2063121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8482dd4e75d77bc5ef85a91f246637b3cfc4e5ca622d712e12f54e5dcee81999. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAEZ2063128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e1fcc220cd9e895cc2f1444b3e075ba35ce4f009e08faf854f4f469a3f4a99. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAEZ2063098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd703d57dbdd455ae38a9aef1ba5f2e6456c597005a3d53af87d25c5274994c42. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/TCAEZ2063121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8482dd4e75d77bc5ef85a91f246637b3cfc4e5ca622d712e12f54e5dcee81999. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAEZ2063128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5e1b719507eaacf44f8803895b890e45d48bafbd5cbe75a83bed6a1f91af21. 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/TCAGS2360511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ff9a1ab1d4cf648475ff4af1e95aa7762007552509fbaa46272bd606613d63. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/TCAGS2360539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df9b7787ada75c2dc8c510ccdfb3994d803b575e036c590358ae64f489950ed. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/TCAGS2360556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd848816afd58f03f133b899a2192b42e4cbf82d34c108bd76abc78d3ce1dc58b. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/TCAGS2360558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61912211ae7409a034c64e6c6b497dfe58bb6d904ef2681e8206eea7a1d8b62. 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/TCAGS2360593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657534190136e288b35771268c108c6e91ceed76f86e64c5e63c17b8e8ee6f01. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAGS2360641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4a8b73302ff262714c6a74cd3f05bbf1ead9f6b91bcb1a7eb1b4d66ab95039. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAJZ2552933.