Samuel Luis Chapanga, better known simply as Campira (born 9 April 1982) is a Mozambican former professional football played as a defender. He made 26 appearances for the Mozambique national team. Ca
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 0xf7fe83b5a2d25df0c73737ee26809c4d063b192b1eee2b3d174e2d54c984219c. 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/b55ad698-1736-4f0f-b4b6-827fef6815f9.json and https://artists.proofprofile.net/proofs/artist/b55ad698-1736-4f0f-b4b6-827fef6815f9.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 0xe1fd4bcb4135bd7192d386d34f61bba7607d13b50fb9f60d8881677fa5f784f3. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/MZRR12000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d38d41727c8cbe65b18ac8a5adf3dabdb059d44818c3d008e9810b5be02cb7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NIKIT2100066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de10fda8c611829c597f1e5be73bb52d16762e05753def65bad51d8095e1e91. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:55:43Z), 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/NIKIT2100405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbedab70094fc17a2ce87de83cf8088a40823923c7475e3affd5826783eb6706. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:35:00Z), 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/NIKIT2100716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ee4b20bd43428eccb90f13b3d202f6fc395ae06e405c4d7187b7bf5c847e61. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:30:53Z), 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/NIKIT2100715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3042cdf3fd1ec032f865f0747e5803ce2a55ef5300a82f0be69c8656a1965d72. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NIKIT2201265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3042cdf3fd1ec032f865f0747e5803ce2a55ef5300a82f0be69c8656a1965d72. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/NIKIT2201265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38bd918f99a28c9d288facec543d4bfaebcd05e376512eb1efcfbbd0469dc28f. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/NIKIT2201770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3754ed74087de233b6afbae039968d43b6aa1edb4d2c634645a87e293bf9ca06. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZZ972442559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101fe85e8995468745dad50cadc50df13801f84087960facfa15d6fddcddb304. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZZ972442558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8c0a08335ef5c591cba7f4460097cd0ba1eedaf131853ed545314bfa8dd849. 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/QZNW72406731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173f006c3e271b6655b7d629dc1b8234317da39e625542b5a6086116fbba3d13. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZNW72409766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173f006c3e271b6655b7d629dc1b8234317da39e625542b5a6086116fbba3d13. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZNW72409766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b96f4f239faf6d4c719104f598c5a6ecad26fcde44c66d5f1be97d66bccea96. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZN882504364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed2fab899ea196a5afa4b82bc8d4a257500320be70060926c3169bc5243ede0. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:57:29Z), 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/QZN882504365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cdf484afdebb4e262b85b3518a75f6f9c472cbfa1a796f4b18fc92067c94b2. 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/QZN882504363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b96f4f239faf6d4c719104f598c5a6ecad26fcde44c66d5f1be97d66bccea96. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:07:09Z), 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/QZN882504364.