Sława Przybylska-Krzyżanowska (born 2 November 1931https://www.slawaprzybylska.com) is a Polish singer who became popular in 1957 with the song Pamiętasz była jesień ("Do you remember, it was autumn..
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 0x3e76a0a71deeee1aba7b164c6356fc212dc97158b517bf51b6344bd11c748cdd. 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/698affc5-07e0-4b60-a823-cb10bd7a5fe6.json and https://artists.proofprofile.net/proofs/artist/698affc5-07e0-4b60-a823-cb10bd7a5fe6.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 0x0c8aab66816b69cabaea2ef36788ed00413d51da91b9b073a9adbc93ed91e11f. 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/PLA245806461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2742ebae9e2bf8cf4fa35053ad8524c8edcd401ce31332727c11dc0942f3ec06. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:06:28Z), 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/PLA245806455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0436c250f678f73960c1a5521e070494b5a25aab6db85fa4dba4268251fc16. 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/PLA245818040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a891f225730e5ca7296d071f9bbcdfa02f58553a32ef28b50a63161c764603. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/PLA246409092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c612d86fcf023f8433e2ebcb369ac193e543bf8d5915929b41cb0ae029f6afa. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/PLA246409090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bfc928b756935ed1bdc33f7b6561d8ba66a7c90becf10018c1c2b315d33afba. 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/PLA246409095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b87119285c6fed2cce41be0cacb6cd57b2a38c41eec7be76338aad33b39b98. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:04:59Z), 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/PLA246610785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3521cb156de46af91b3b99402bb54548eeb86842dcb9897aabc4a6b1a69b8dc5. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/PLA552000126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0436c250f678f73960c1a5521e070494b5a25aab6db85fa4dba4268251fc16. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/PLA245818040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5450a1132ef8bd5c472085cb7b28ebe1b2b2b92631dfe9707d5fbf4f5ca62622. 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/PLA246812388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c612d86fcf023f8433e2ebcb369ac193e543bf8d5915929b41cb0ae029f6afa. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/PLA246409090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866f7393388b217bebc6b00105699057c611aa5bc65987bc350c4bfb43ef4514. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:56:07Z), 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/PLA246409091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28998ed8201d0673873bca59cc6275de5308419b8d0a15983b6fc0901da5eb45. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/PLA246409093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a891f225730e5ca7296d071f9bbcdfa02f58553a32ef28b50a63161c764603. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/PLA246409092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c0b5acbbe5106d7e66f238dd44d2fcdace877e8584da95e266aa18c89e0e96. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/PLB171500793.
Agnieszka Osiecka - Kobiety Mojego Życia (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74116cff6dedbc05b1aacd4911321a887bb05ac8fb3350dfd79fb4e422e759a7. 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/PLA391370804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5450a1132ef8bd5c472085cb7b28ebe1b2b2b92631dfe9707d5fbf4f5ca62622. 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/PLA246812388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11eef13773614c95f7a19e32a2befa45665a24911ba6cb36239d6bf74c98b6e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/PLA247216378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7cc4283ce45bc2a0e8569ea06e9075be79fa0f4d59b1f0f863b473f08da575d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/PLA552000156.