Malwina Koteluk (born 3 July 1985 in Sulechów), known by her stage name Mela Koteluk, is a Polish singer. At the beginning of her career she worked with artists such as the Scorpions and Gabriela Kulk
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 0xdd12eb88ebc05f3e3ba56f2e232e17c9f00658d2343d701acac61383702ae8b5. 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/264531e1-1990-439c-8f2d-7072afbb55ba.json and https://artists.proofprofile.net/proofs/artist/264531e1-1990-439c-8f2d-7072afbb55ba.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 0xe34ea31e7c91d5e1247fd2d30114ece4846a48c2146b974af989d01a7f93235b. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/PLA551200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c950c6d2a46833af1f21cd5b34047fcd909baa403ea89d485a5ccbe06c255f9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/PLA551200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9f91e0864c0f403ec5ef31d09b74f19f3c1a44ce4b276169a0e17547e31965. 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/PLA551200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9611439370221a17ff7cb61166de81e79ff3ed1e3b74a2c689084ca7d69cd42a. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/PLA551200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23f08fa743792ed3fbdc41d563e3ea699ae6eaa29096138d50602fc9fd12f99. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/PLA551200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3df988f6f84a6a5f5b9c02242beb62bed79c89abcaf48ad72e54e4216066165. 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/PLA551300296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262a3e6a3c0609ba56f8b9e529ea8aa40a08d9feb028a354eeaad4ef02a3381f. 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/PLA551300297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea6d22b42027b8cf45c46befd5b63902e83cfe51814d481b3194cf152444515. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/PLA551400342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e91fd85e0b9493ecd2c13bb479c7d0d48d363615d5cb47349318b8706cc334. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:05:54Z), 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/PLA551400656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf23bf07b69d817e87c3fc4dfcdaa907a9461ae8842bce5b15aae86e3085f64c. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/PLA551400658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e148a74b6e063defb17e38c0dbe2c110b6e90b3d217b8b1a64169e714b7a5d. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/PLA551400659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af5c62d5ffab27309f2d6d2dbc38a8d0c4ad82a310221d9e04aa2e20d074285. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/PLA551400660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33da2e7ba9f8ea55fbea8ff08ea3960ce2427d7ff18644499a271cd11cc619b0. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:07:57Z), 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/PLA551400661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75a62edcd911ec11b5f9491f8b6b4f8fd20a0686c6237f3b6e5fea2e10b86cd. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/PLA551400662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220ec176b2c966a1c34b731621d1fbf56e3429245aa3a12872b576ba96094056. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/PLA551400664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd867892f5d340626f53d450551e737c48e326e979f523ec6d6906d4f6947f72c. 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/PLA551400665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a9456e618316f4f829c2fd0ce168241b23091e85ebf067123ab6544730e0e8. 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/PLA551801126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceaf3b7368bbc1984dfd848cf4184d71e5ba986d2bff5f383a82c3722062b5dd. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/PLA551801128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01a74ca0fae976013c37d889bd2c0b0672b29f8945ea06d3867cd3bfb196b05. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/PLA551801129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908ba78607486c35c6b8caa71bf90e85a841cb57e04e3ddfada766f06ef1d94e. 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/PLA551801131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d4932ea8a6be1e5c1c62b86b9ad6230f2a9c36b27e238289cf218d34f58ad9. 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/PLA551801132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879d0c3f0b5cb42f33887e85c38f4a3de1db326cef90d0e37446bc57abce460a. 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/PLA551801133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14b1db08df81fe8f0d6ef87eeedd2c260cd80c3c83e793e63b8ac4d329c6237. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:39:44Z), 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/PLA551801135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ce8c48ec271eaf0d4b4aee9903ab50acb9f38a3757f27432f48f7339dc1a7a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/PLA551801136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2759bc40db9598aa1c9e1731f1470891954d110187a4cedc73c6a9094f65180. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/PLA551801137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb7316ab3d86bdcef421680677fc40c37642ca56c2a28c9da3ea80a82902e08. 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/PLA551900617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1769cc30f0399567a3148fb4a95692005dc93127cac5ffded1891dac1bc03ce9. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/PLA552000361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806f2d49010b14f37fcf75a08d5d179b8184bbcd50add196215456933f583fee. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/PLA552000364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb918d421035f91bdd88d33f430d702f0de63312961dede0e4b4b5011e3962aab. 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/PLA552000359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee82800d0dde0b08ea0f140b566dda69de0ea7e6268469ae5a2451832da9da2e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/PLA552000362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16cb37bc78abfa6f766b673f25351612f8489005e3f97b0eb794c8f78d1c89e4. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/PLA552000356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7f5f01dab6e10ca0b55684123de6c2e3679a77ef813e10590445a0918dd40c. 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/PLC591700100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe56b6062c0f0b0b2d3a8717ec0fa04206809dec6a7c812aadbdd936b1b9c4a. 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/PLB822400224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f67947e99bb67005c92786a756a554eab0eefa6896506bca3b383ca589bf42. 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/PLUM72400486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5cf7884ab00737ae9e5a9cc89e5632f23f857c7728414ea6aee6df8889ef66. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/PLA552301120.
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 0xb2013839180ea67a001e3323dea6a2efaecd9777d66cf60e1fb065cd49b401b9. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/PLA552300835.
Grzegorz Ciechowski - Spotkanie z Legendą
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ccabf440fd56b15b360a321dbd9e56e1b997e82fcf5e190813ff9156aed5967. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/PLA391593206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442d9d481cd8516f2cc1a65185ee7e647b391e9a050818c924f158a4ac846b6a. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/PLH441500060.