Anna Magdalena Karwan (born 6 December 1985) is a Polish singer, composer, and songwriter. Initially beginning her career in background vocals, Karwan rose to prominence after reaching third place on
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 0xa585b78b256c5f2b5249eb57999baf4f94a3d8444f966e8c7306def75916429d. 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/911001c7-aac4-4b92-9937-41098979c6e4.json and https://artists.proofprofile.net/proofs/artist/911001c7-aac4-4b92-9937-41098979c6e4.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 0xdbf4629a9543304bec780a2e25eeb73abfe740b3fe6510081a0691b5f29924f0. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:18:23Z), 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/PLI362017700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9887abb2077cf3c617786fe5dd2f029a6ce089d844e4c4041491f694130f6f61. 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/PLA551900010.
The Secret Game (Piosenka z filmu Ukryta Gra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed47134db121efad32ac15d94e8d9bf6e4399bee169eb23f997598de643709f. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:05:58Z), 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/PLA551900014.
Ostatni raz - z filmu „Jak pokochałam gangstera”
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9481922cff4f68ae1c469da3161b8e85accdbaa69e643ca3d09221001578d842. 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/PLC592200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2977f81de0f5317ef23e652c2dfcbf3536bbf5306eba3fcc836e1b3934175e2b. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/PLC592200061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c71990881f16e74e4f0c433b41ebce2e09e4be28502f86a0e72f7fe518b609. 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/PLC592200181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cf40db38b3a3179fbd93952a64603a9367b64223751ab6ea9a902538b30d6d. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/PLC592300001.
Sen na pogodne dni - z filmu „Skołowani”
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79090a73dcff528363ae370cd7a57d103b00bc403166600800e3d7954890d9ac. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/PLC592300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3e76b0f3056914b0cea60efdc3b5461b090f287093380e36928b4a9c65a5aa. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/PLC592300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db44f58bcdcc71f655e3a77b73e568a0a8d0dc6f9266c2771208b8abaa5c7ad. 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/PLC592300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2977f81de0f5317ef23e652c2dfcbf3536bbf5306eba3fcc836e1b3934175e2b. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:24:20Z), 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/PLC592200061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76eb796ca23b413992b4075b355ba6b46b85249ddd13db37b9f357b677738bf. 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/PLC592300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210023507932d7dc6160112bb2e43159236256ca9c685117c68118c97dc6fddf. 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/PLC592300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cf40db38b3a3179fbd93952a64603a9367b64223751ab6ea9a902538b30d6d. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/PLC592300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aafb97f52329b9f9db257cbc28ecb17a4252747ae7cf235971e994c15539796. 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/PLC912200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe6ae6d6beca9971708786da61e52cde511fd262c2ecf77ecc35a62522a11e7. 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/PLC912200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657c2e147ac69d6c6150313c24fd1e91d3424f86696caa0111612e8f80f56ef1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLC912200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08369099228fbfd6f57389d9ec0da5c3814af279aafccac39a4d395dc7ba0a6b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLC071506006.