Irena Wiśniewska-Santor (; ; born 9 December 1934) is a Polish singer, musical performer and actress. Her career started in 1950. She's noted for singing in clear mezzo-soprano, considered one of Pol
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 0x857afa3baf4f970ae44bd70863e2bc64f6245d54a40a2f0142020e09886bd95c. 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/dff19d06-c2c4-4cff-94d8-fe77e8696519.json and https://artists.proofprofile.net/proofs/artist/dff19d06-c2c4-4cff-94d8-fe77e8696519.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 0x66b0e61f75240890fe0bb8662a4eff168d51a08425fa33610f21375dfecdf700. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/PLA246308618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfba7847e0cc47106643c8319e2b7bb1f3b76a5bee5ccb8e72cacdd5766bf4f9. 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/PLA551700185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591887747c26267155449b240c7d58299b6f98ee309c7cc1920e21bbd21e0551. 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/PLA551600665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd32b252720b1580ca1fd245cb91c47e7e58b5784e690b2e5a0f2ba384554fa0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/PLA551600666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13ebfd1c800d9bd7f6dfbd3857cdde67a18ec2c5da3bf0c012fe74ea26c036f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/PLA551600670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee13eb69602d2622b6598c24244097a5d3d25410ced7e2debe30626e22c40ee. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/PLA246610726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4660a195b81ef6c918270572d88d13ce11a9666960c600d3cdef2f503811593. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/PLA246610721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11cf3846a951a15d8a5a9c3e81690e994c39955b18c2142fae5a267ae4f42a1. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/PLA551800738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4281d1a9c6be9ab1c0eb6fe979b51376ac5473ce4ee43f178d2b1cf5bdae2110. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/PLA247014133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fe659b15b852350d71b5cdd0a43ae404a3db0f4a6905c2f609f51da6bdfe66. 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/PLA247215609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4224ea99ecb9cf2b782f930c5e65a0332d9df656ea57740b5052af8010ce30. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/PLA247215616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14deaeb3f53eb5a6d0b2f7e2ac5870d4d60d14c6bd6722e457daa648a5f769b5. 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/PLA247215617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d45ad4e6fe7bdf3ab006f899c15893cd5f256cee8e97f0b436f020aade8159. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/PLA247215606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff69006b4caf3cff46326be37cf0ee9a57016db1a6edfda93f40c45dc11d58b. 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/PLA247215611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7678e7f820f34127912ec06d2d0d937257c97f018f72f92dee7c302060f17c11. 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/PLA247215610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93cf114131bb3d388ae6bc67df23686620109e8eed02267a9ac469c72bd6dca. 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/PLA247215607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11a353043e01cd20c6974ec6ccd132558663a1115b7f6db0098715b302d348a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/PLA247215612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5a752769b7a402bfd18923f22c4762bd29680a07394942b81ab625ff5570a0. 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/PLA550000202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a851d90d7dc5a20b4bbeb0925b6f6b934b248ae36b113ad9890ec4f8b947685. 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/PLA550100488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1725a7b043ca22792f3cc21a5e2ef0b6fb9676dcc170dd68794369d45bd7878a. 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/PLA550100492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17665d71a4db19619a410a3f90206c74ea5d8a86b3123e5630e9a95193ed117b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/PLA241113084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066a2e5479b2d1706302d7b2867762944d0238a6999f0a70a766f89f618223ef. 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/PLA246610722.
Najpiękniejsze Warszawianki to przyjezdne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a829c9d3b669babc1c698dc27f41f26bfb1f909fabc01c36bfea773d742a86. 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/PLA551600651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14deaeb3f53eb5a6d0b2f7e2ac5870d4d60d14c6bd6722e457daa648a5f769b5. 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/PLA247215617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee13eb69602d2622b6598c24244097a5d3d25410ced7e2debe30626e22c40ee. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/PLA246610726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11a353043e01cd20c6974ec6ccd132558663a1115b7f6db0098715b302d348a. 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/PLA247215612.
Piosenki Cz. 2. Kontredanse I Konsonanse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfba7847e0cc47106643c8319e2b7bb1f3b76a5bee5ccb8e72cacdd5766bf4f9. 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/PLA551700185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19a382b3824a260cfbe8e070d2f81e8158c5d9b793447b7afc237ddddf5edc7. 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/PLA550000192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4071de50ba60ce4c784daa77cd6f62aee4c67096dfa2a28aa63c5465ddb8fb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/PLA551700186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68ee6147fa2d32f976d837da52cceb736c4aa22c24bd32cf81eb7ba94841c0d. 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/PLA550000196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fdd8fb991b5485d295278bf47b945ebc4e664c937cfa0502c305c753b500ec4. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/PLA247317655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee13eb69602d2622b6598c24244097a5d3d25410ced7e2debe30626e22c40ee. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/PLA246610726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016b1d9f8d8c09f4982c613a67ca1a1d6bfaaf5dde53af4082f3138fccfc4ea9. 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/PLA246800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe384bbda71724f4a0bf5d80cd3ed62fb556c79257caba1941f6a4ed09aad304c. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/PLA391588416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f91d6d3d9ef0464b67dcc6e10ffba8eebd7623e110f2f7b7758e31769d7c81. 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/PLA391488507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bd7560d7cee51afdaabcd64c4a3c091c4e3ea1fe5f3d9516211091807e5f00. 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/PL0981500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e9b7307c5bee799ada037187b95f46e3d4f6b0a3ce03abc901b510a8e6e11b. 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/PLA247317193.
Moje Serce To Jest Muzyk, Czyli Polskie Standardy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5dd05a527db6f0ab17d631a466b078ea8114b462582234a00cbc29731518f56. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/PLUM71600803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe384bbda71724f4a0bf5d80cd3ed62fb556c79257caba1941f6a4ed09aad304c. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/PLA391588416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a37f99cdf6726677ba47bcdc46320d6669a14605a3055b254bdb02e2531105. 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/PLUM72200934.