Jennie Willemstijn (born 1 December 1977), known by her stage name of Jennie Lena, is a Dutch singer and songwriter. Early life Lena was born in Purmerend, North Holland. She was a part of the Dutc
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 0x8236988246abc7a7c12c2fe7b3df92cad104471eee93a31894f204c67141d295. 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/b78f830d-0455-4a33-8d36-aa22bd933a49.json and https://artists.proofprofile.net/proofs/artist/b78f830d-0455-4a33-8d36-aa22bd933a49.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 0xc71766e243f58235225590692caf2f5653574d97551a9ae06e0f3e9319d58bc9. 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/NLPM11620130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1629bd32715535116edabf6162351bedbc0bd2bdc21e54052e8e09cd911bf8. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:04:40Z), 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/NLZ291600035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a4c8b9e003ef69ef667ed8d35e5e8be4eb5ce0682bfb82b941c1836c5e3b13. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/NLHY21800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc694d75a2cd963c3a7af17ced75468639d5a0e8ee918d626e5ba3ee8aadf58. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/NLHY21800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb0e10fcb87de453825a552bebdcb9ddc6c5b29a342bcb6837201de01e8b46b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:00:46Z), 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/NLPM11620571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b443d697a54d3b81c70a6793ae3172434c3890fa87e479d807c997294127ac. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/NLHY21800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cec51d369be661c557d4a39a03c697821dff629b9ae4714ca0bfedea3edcb66. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:42:37Z), 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/NLPM11725195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe415390de7c622702132d47620ddcd86c51886e1378b41ca7dd62ee0747d469. 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/NLD442100093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca195907db1ddad1d27518acd56f85228f6de849dfbcf0adeed2f9e865aba6e. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:07:17Z), 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/NLD442400097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138597ce2ee02eb70f9621e8a7441b8b0d66ba00e3b09c886c97c91eb8294db4. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/NLD442500055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884b5f0d5819426aaded44b1b06c6e93db0dac71aad87df72d8673d2ea052d64. 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/GBDMT1600167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f4492228c211b980a97171b89cc0e3a9fbf986bae9588606fd151f8c88ad38. 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/GBDMT1800060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684e778942440c5f3b2bfbfe1cd91933323a8226303707b5c486dbe6ca110f13. 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/GBDMT1800063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f4492228c211b980a97171b89cc0e3a9fbf986bae9588606fd151f8c88ad38. 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/GBDMT1800060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad277d7b878f4d33e97ff20e3e90f99b7ca61feb25a690081d0b7b8d4b9ccd1f. 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/NLS241201760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68eebd94ce7e8984181eaac1049559023a4278d401e816aba965e6ca8d751310. 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/NL3XR2000001.
Best Acoustic Dance Covers (Ultimate Relax, Chill & Lounge Collection)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad277d7b878f4d33e97ff20e3e90f99b7ca61feb25a690081d0b7b8d4b9ccd1f. 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/NLS241201760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf872b9f4b1c80bef70932d53011e0abd6d573afe32dc70894055211bd29ad1. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NLAG61301017.
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