Agnieszka Osiecka (Polish pronunciation: ; 9 October 1936 – 7 March 1997) was a Polish poet, writer, author of theatre and television screenplays, film director and journalist. She was a prominent 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133434034db6630e357c79df2855c10fa4e4bfd7a79bf21ba732add2fcd085ad. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d55748ae-ced7-4fe6-b2c3-51e7ca6aaf57.json and https://artists.proofprofile.net/proofs/artist/d55748ae-ced7-4fe6-b2c3-51e7ca6aaf57.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 0x838e4dd1a5350cc9aca62f23fe8356de7c3de38e6313eee50cb8e7b904f98c72. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PLA246007630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6119c61f42a5832b24b5e14367565150c25e6595a0fcf76ef51ac0316fcdd7. 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/PLA246308888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53befd59e4bb7a383ce748dc50d982e0fa53a84691d86e4927d485e8d43e6f54. 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/PLA246510011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0e5da89af06d6e0907426b1b328538d913bf95f64d473eb3e1b58e83ec9777. 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/PLA247620494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa028c5ceb50c1ea6125df42611ad1da5cd37ff1d081278a91a9d8cf4ad69e66d. 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/PLA247822235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0e6bdfc2acdbb933c83ee1c86c8ead8656addf1717308c62b16d0fb40600fe. 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/PLA247013619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1cba09297016e868426a0725d772c71e8d908954c33b5c4f088c8923ff9221. 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/PLB172100316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3883dc9d49aac3d494d6a8135a0f888f7c69a6fc1bb3a1e43766149a3de721b. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T20:36:20Z), 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/PLA246912781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709d1d19b66ec0f3edfdfe3e2b39895185ccdb4093f5a7ae18ce5b3d700bf869. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/PLA550600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba11153382cb10666875355b82121c5775036cc716178165fcffac38d1edbe2d. 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/PLA246711696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ed9d6a4f3b2e9f4bf5119a91201cb695099826af251f16871df6f34ee0f128. 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/PLA247420000.
Dziś prawdziwych Cyganów już nie ma (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61caf06e5fe107b0dd713e19821423d0052f9061eb935650eabe5bf7b44d504. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PLA559900180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ef5737afcac62adfb58bc4c9cba814dd960fefcc7ecf0ad32d40a9a56fdf61. 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/GBAHT1323016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ebdcfd7d81baf1bd9ea197d8dcb0c1bbe656db5e16bd4d6f16fb2c436b5a65. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/PLA247317418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528a1a078a82dfa73d954bfef59d77db0404d681b86c541cbe275d36852b5040. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PLA246812100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a526ef752fac88d3962bbd2b6096ae1f2d98109a9f56b551a5bdd1a810ad84. 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/PLA246610555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e58958a77d43598906b14c5426d775e133c9bb0fa3a6facb929217f5b4db95. 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/PLA550600021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5019a1007464367eefa627a1d5878eeba6955379ad31a61b5b2757f605fd3a. 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/PLA247215992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853ec3772a3105565b0c978a30c4729300486c76e86a0de24c29b555e776a6a6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PLA246610230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464c0d79a70f7c21d7e3219385e5f17fb689e02232037f69ed7decba7cc6f45f. 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/PLA550600249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23d04b260fb8c21106be55e3cf83a708426f920053f861122ad956e915c4d43. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PLA551600748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a7dd7f54d2e299f16a8e1d8c083cc8f3710de6315a6c83e049e8458a2a4b6a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/PLA247519767.
Agnieszka Osiecka - Kobiety Mojego Życia (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501f4929f8eeb34db1b59b75a9cb6cb6dae64b0980d18afdc1adc1f833342a85. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PLA391370901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18ae4a7d053c4111136e1c6ea9d743be0a71f88c51266805166910a6e230b43. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PLA391370924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2052aad18af396f8dc5ca40099a15966f569f8b9df7694f439a585b5fe1921f. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/PLA391370911.
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