Katarzyna "Kasia" Moś ( ; born 3 March 1987) is a Polish singer, songwriter, and dancer. She was previously a member of The Pussycat Dolls Burlesque Revue in 2011, and in 2012, she came third in the t
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 0xd084b82b9e408267c9448097fff36b9bcdc8ed35327e775ca39d1f9d0cc1a009. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4276baab-eef8-49b3-ae17-6e8b52386d84.json and https://artists.proofprofile.net/proofs/artist/4276baab-eef8-49b3-ae17-6e8b52386d84.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 0xe1507a6c23d93510c140d57e7228a48c82a11086d962291d94bc74e87153c250. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/PLE951500337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4576c51f3d0ad24d5f39fac91e968e72835168845c9777c96806f375626fa80. 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/PLE951500338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcaa56d64afd068835ff7f8e196961ff2c9bcd81ee7a1bec2e8e41d8260321d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/PLE951500347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29809d6a728d78afe9ff3dced5d033e2c138f6659d0c2b03450dbac12a6e5410. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/PLE951500340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c7597606e19753d5e15160d2461a17bb02e4f4e824535a28aafc5f8f5428d7. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/PL25K2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac42eb83230c00ed2f4d13a13ddf7ea5448b4010a2832e8b9c6be98443b06912. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/PL25K2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00eb7c842788e110b9ee239eca9bf91947587370e2312bec4650100e2b55c0f7. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/PL25K2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29fa9ed775261a64b16f550584db44841cdf380cee2784404c09cf36d52ce61. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/PL25K2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147686e598eb13bb712c7caf1236a9baba953fae7ea4ac9cd88320f8668f92f8. 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/PL25K2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed2b73fd4d46a20904755d462973d140f071c4a4733c0d542bb2ce5e9dde0ec. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/PLA392200186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2522d208d612c4b2a0d255b114acb4fbe2ed42813aef0203393e48bcd6f9e26e. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/PLA392200187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7bbbb416221894676df76aea3acc61dc57e998113fe4bb9e0964af5a0988fb. 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/PLA392200190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd6483fa302aaea080b8bf470881752bbb9cce08b697ffc5413282f4fd27d31. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/PLA392200191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3e9ff0147658ca3080743bdf11466d33dfd9a6433bea0c037116aa44fa7b74. 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/PL25K2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0793c1c508978adf0c83104a224e68638951b0032a22ba64aee8412b1d793d8e. 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/PLA392200376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b264bf37d5243a83a7c139b892bc9ae6f34ece802ad0fbf12f92893a6644b3. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/PL25K2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121beb1cd83a43852768997e8f3c145dcdc179e6fa0553ccd13032a47278cdbb. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/PL25K2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c9e81fc64e9e63c63dffb4a38311531ea67370634e2c90cbeec55392351f1a. 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/PLA392400127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4138e84e34a1f5ac92222a8840db9dd49987e1b26993985a3e6416ace202e33. 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/PLA392400124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013f0db72f8f59a8a97e22c1be7f4bfc35f0e6c792c1a153f5e530aa91884aa3. 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/PLA392400125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0793c1c508978adf0c83104a224e68638951b0032a22ba64aee8412b1d793d8e. 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/PLA392200376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50cc385a3b5569fdc7b37849bd6ef7ff02de539f067302e454e9d22471885838. 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/PLA392400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c63049db11f3fa6cbe87b230c1537a9e7d313e8b613a2dde9700b9cc98818aa. 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/PLA392400123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a8c819af6cd6efaec8f574cedd89521bd0c57924e5070decbb868aaffcba5a. 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/PLA392300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c29b9fb8de5eb1b5a4e7218a16f4ec8ffb7b2c3b8e079223d6c7f9cc21e4d9. 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/PLA392100210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c665ac0cbe5b01cacb294de658610a943aa7659c55231b40635c406eb38987. 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/PLA392400128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc267a893a64c6ed68f299076f0cfab578320ea6ca5c4cad3dd4e88781ee5fac5. 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/PLA392400126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c9e81fc64e9e63c63dffb4a38311531ea67370634e2c90cbeec55392351f1a. 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/PLA392400127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3e39d0380c91607a9848e7897f5f07b47b6c7aebbe391dc27c82d54d804ab6. 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/PLA392400130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0099e9f1e8c465ea2825893a9ceaaf3da7386908e1a4da9823a1515ae4d6c674. 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/PLA392400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2adf6ecac8f6e16c5684b249e5d24945ac0d188190fe7ba1a780de74559a4b. 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/PLA392400131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cadb162555a4afc3d5cce2ff3204acdc6760da73fb27488ebd5dcf0172d2db. 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/PL31T2500426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74910fc787532a0560f0038e0371fbb2b40ccea353d43901cbbf5c05c44f428f. 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/PLF241704899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5750a1d9c3fdf184ea1bc3982023b1cbfcf018c2b042acb62cabc25ce05f003b. 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/PLF241704904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe48fbed50302da3c3882efceee3c80bdd7ed2f43a0cd217f8ac97e15b6b4bb. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/PLA391819206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef92be7092df91e5fc7ea4815f021be4115dc9e69a7bf19717bffdea7fa11cb9. 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/PLF241704912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276ddcce32a40467e2391deb48a7c02b311aac68c56c9f3d8dfa4d990e32ae17. 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/PLF241704919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be04308b60b55a6278987877746809b871bab7bd2e2ff4516b3571ca40f6cfd. 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/PLF241705559.