Lisa Lois (born 22 June 1987 as Lisa Hordijk) is a Dutch singer who rose to prominence after winning the second season of talent show X Factor. In 2009, she changed her stage name to Lisa Lois and rel
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 0xdfff71f3ac17385a0fc02d8659e5f02f54b68fd2f6b7d4a5e7ea481f5f440179. 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/2deb1880-48e8-4a1b-8f1c-da48edfcb318.json and https://artists.proofprofile.net/proofs/artist/2deb1880-48e8-4a1b-8f1c-da48edfcb318.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 0x50677b2b1c8bb610c8b131ba09aa23de4ac32684071c86e9a17a3b06e90c96f0. 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/NLP760900201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235e030e11c2af183e20e41eeccc9e0c8653f12a1370701964d32d99c9fb70b8. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T05:07:11Z), 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/NLP760900209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b4eb6e384e6e501c6cfe99996bdd6ab992039e6b0ec1a8abc24c313f3f4e98. 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/NLP760900123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4fca607b560bbb56360538bda5c44c164cb0834dd8f8aadfb4ec626b6dbb3f5. 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/NLP760900212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0f73c8f74a42e79895ebfcaa64436b1e83aabad1450c8244a8f7fba600e773. 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/NLP761200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0242bf2ea698e51725c7d7fd89cf4496ff871fa1cf4263803c2dacc5700c859. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:41:50Z), 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/NLP761300005.
Heb Je Even Voor Mij (Uit: Beter Dan Het Origineel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443d8943b428c48c67a824c3a41607ec2fe5fe751958c92ccacfcbc8c20b6756. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:28:33Z), 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/NL1AF1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b31e78b62508f1dd2da0263608628b34c0ff72c7931bc3ae3afb987fbef343. 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/NL1AF1800005.
Christmas Doesn't Mean a Thing (Without You)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a0e753bddc50ae3a091c9e3c2643af0e5892259deeec84ec0cca523f4ce01a. 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/NL1AF2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f12475ea60c65a26ad14873959587b38b4472cb50e2b9fd6f9bf8fbdc44fc0. 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/NLS242000321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721bd494a1335a76882cb340924cfa4ab82c40c913a2d5bc7c2f38d4c260ff09. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:08:54Z), 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/NL2FM1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecb4d45c916b47f1c04cf26894e68bb7506e7503368fd75f507102b347be3c1. 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/NLS242100259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ea7ad45bb665ce20051943eb4ecfdcf26a9f3f1021896bf905db923eedff18. 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/NLP760900116.