Femke () is a Dutch and West Frisian feminine given name of West Frisian origin. It means and is derived from the name Femme. Originally from Friesland, the name Femke started to spread beyond this r
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xfbeedd6f6be33170f18f1b0b35256369c3c69c3ea992f6e7e2853247d24c85d3. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2746ebe3-2690-44bd-92b2-d7b6b2dcd4dd.json and https://artists.proofprofile.net/proofs/artist/2746ebe3-2690-44bd-92b2-d7b6b2dcd4dd.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 → block OTSBitcoinBlock must exist at that height 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 0xcaa68036f99aa9e6dda385e3ac6763579977ca96a723c414160775e8044e5d6b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ES8741602101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f14b41347e364d67f5c9bd1dfdba245b330702bf5319b49b2a00d5e8492aec. 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/ES8741602104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07eeb1deecf596400b638534998bff5979633bbe7c9ee2fb57979b7c043a9e6. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/ES8741602105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d25c4eed2c902bd58b56b8c7668a7200617dd2ea270b732da4a3d06f96cb12e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES8741602110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fca506fe94554ceb5d093a26607d08e9b5845ef3553fb3df6ec3d3b49b7a295. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES8741602111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1beb6a1a24383610c819dd2be8aea14b92f23771c9929d326e763dda11f78bf2. 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/ES8741602113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021ac641912ea887be7db189e7fab1d410f4464ce9b57af7518c719fd3eb5ba4. 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/ES8741602114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd0f28ce66c1b3baf94f0b0df5c34d4ec3c80fe9604ddf335a1e5aeaa405b7b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES8741602115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a4311669db25eca9e52c212edf841bfe769989aa6fb75e8ec7a6c61787a25f. 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/NLNM31200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889d3cb6be20ca847ef8e415a9424e4bb69a340da2ed90112b819022ae015fb7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLNM31200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f74c01efc633bcfc2bd06458092a695f71adf7fd5cd99394b1b0d27835927f. 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/NLNM31200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8353e7767c1fc1787a13320ddb097424cab5fc6f9b51d8aac9a43f6193445eb1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NLNM31200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4eeaecd8517b67ba18d7da5ca9a5fb2d37e93bee01f7da6c62781a72d33724. 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/NLNM31200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5bfd079d4d59e51f23e38258cc5f46dfe4f584c72b3c7940ac1b4fcf2d2f3c. 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/NLNM31200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7950a6b5bb85cf8c5730a38dc3502d6af41cd4cabb58b28f0930a78fe1cb9c4c. 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/NLNM31200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f451e4083a7e5753eecad45ca9d81a64699322d2c55309265bdc1333d4fc42. 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/NLNM31200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca89318d155ebe7da093b4c98f80b7d571be6715f2b389e43e9b2877d675127. 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/TCADX1897994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c419c587ca583d69b2786e68d6f2681addb1464d585fb4f44fbea99f1071da. 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/TCADX1897995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a278ebd72fdb9158af0ef97f5684d1bb9ce450a9cf078e91303c28e38d16174. 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/TCADX1897996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9967f0f97b957c31267263c60c2e3d83a2f1b66e5f051e04c541f1b6984d652b. 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/TCADX1898007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8edf40527bf88abc619277ba1c7abba5fcbca014ddc60e442a575b7b6a24d6b9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCADX1898002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b02f32b293f450086581480b9a36c84b88febfc3667739c729f184f2cee37a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCADX1898009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab79cd737e79b8fafb177f042de5babaae73825340b1a91e90e6eceb48942b5. 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/TCADX1898015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac46cb0cff36df9f85b252dd57dc91141811ad8c09ba34c8a464ea54cbdde27. 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/TCADF1732248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0771865d90cfa20702e918537a126d3169c351d59b684dc80d3e93b45648d2. 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/TCADF1732256.
Het Beste Van 10 Jaar Junior Songfestival
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7bd99f640422df13bd8f4989833aff151e031b4d3c66e7689b791aee0f99ef. 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/NLNM31200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889d3cb6be20ca847ef8e415a9424e4bb69a340da2ed90112b819022ae015fb7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLNM31200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a64f0633c597fc7d91083bdd2914967fb2aae9c58f73b7497af3b522a52793e. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/NLA950500330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091acf8c41730411ba7922095fd25772ca34e1f70b2d7063997f4e71be13239c. 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/NLA270700377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69136d169e5f8cd9b253626168fb4b4c7d52f183fa7f16f472cd38215a236f2d. 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/NLS241000673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f75529566b1fefb9c38febf711a4f3b3e3cbaa5edb56551931d51d18dc47e6. 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/TCAEC1984102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2ba08fd119c64aecf80dd1d284631712b62e6d33997ae9e03e372f1cadccb9. 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/TCAEC1984115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ebc569a4a5d1a7b124856fc175aaf05df8d4e05d72ae6dfe31622baed7d0c2c. 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/TCAEC1984120.