Margaret Gertrude Mary (Monique) Smit (born 9 April 1989) is a Dutch singer and television presenter. Early life Monique grew up in Volendam as the younger sister of Jan Smit. After finishing schoo
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 0x0c12ce7c0a86746e42e159e120e2d8de07bc5b59fef9ae0e74b0211e6929602d. 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/c8aae3bc-0c1b-4c28-95f6-75bfdef024a5.json and https://artists.proofprofile.net/proofs/artist/c8aae3bc-0c1b-4c28-95f6-75bfdef024a5.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 0xa2a4cc06ff9ba38b90a098ebfe53fe425e1ec0846e8ba358f0498b829d2e7e6a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/NLH590700033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f9b8f2fb2211fae5fa2b7bcaadd1a640deeb38e41b3d3e1fc1e8b6f916b0c1. 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/NLH590800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91df99710f2d6bc1a72bca96d26ef286bd94612c580d2943754cc611fc38ba49. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/NLH590800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72f5c6b0e067798a21a6ab22feefc5beddff7d60c3a00f69c3a3e2a8626a89a. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/NLH590800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a1219383944c68da6c88a8dd07fd4247899bac6a874c642127d2c6561a4faf. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/NLH590800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec6b3664de4d0d31c3f56a5d854d5e6cb716ad4661ed76a8209b65c93c341c9. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/NLH590800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbbd48cac43bdcd7cb287d1c92739c50abee78f73a3230b031672da13409981. 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/NLH590900086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10797e4f68dadecb2a5a08f9c24e59560022288107c946b39da7fc76fe0d7a4d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/NLH591000042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145565a11faad75850643f5a956cd134b9cbce2988b662a7f69234cf17aa497c. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/NLH591000055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5463a53f2d0be2440c7eb7c55e794e864b36f8f9c9f02bee89d01d0b0053edb1. 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/NLH591100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f29f875cc2c1e961271bc2b7310d223fe30988503e0bce07d796254c7beaed. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/NLUR71700067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837ddf6edd9c912ce4e226784fef158d8ee0760be9866d30733087225133866a. 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/NLE871744801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c61756a046bf1e19a6c23b5081b7db96f3e979e0cf26303f72bb7c63ff506d3. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/NLE872202201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9dd844d9cc716d1b2de322cde2d1fd5146bfc4f7778f62c22ebfc36db89b11b. 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/NLE872416901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c6691eb1ae49b86f3d90472f8fc188e408257e8fd20c9ac4bb349c65796c7b. 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/NLE872416903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d888addbd02b1a0fa13e654f1edcf6eea2af4a27eb3a617a1e985bebbfb844. 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/NL8VC2400001.
Hollandse Hits - Top 100 (Beste Aller Tijden)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbbd48cac43bdcd7cb287d1c92739c50abee78f73a3230b031672da13409981. 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/NLH590900086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec6b3664de4d0d31c3f56a5d854d5e6cb716ad4661ed76a8209b65c93c341c9. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/NLH590800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a1219383944c68da6c88a8dd07fd4247899bac6a874c642127d2c6561a4faf. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/NLH590800013.
Feestknallers Top 50 (Grootste Party & Feesthits Aller Tijden)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec6b3664de4d0d31c3f56a5d854d5e6cb716ad4661ed76a8209b65c93c341c9. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/NLH590800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5463a53f2d0be2440c7eb7c55e794e864b36f8f9c9f02bee89d01d0b0053edb1. 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/NLH591100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503fa7bf3badc5db7946b0a63e3d36debf2246fa9fdb32d00d0d35f07f9a7efe. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/NLH590800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578d070957796e6d6f75d2140e4512197862acf0dbb863378bdaaead7a38a823. 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/NLH590800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6e9a7ab70a1ca3be9705347c1ab69ecaa9c5e6bdd564097e3a2768c70ab388. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/NLE872209701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a496f94d9759001b443179b9a225d3741f08e0c05722c01cda6d8fbdc573f06. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/NLE872161101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43c6c814371b82b4de8273cce6d9903b05c1bb8031936ab8bf37b3e42effeaf. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/NLUR61300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8717f5328ecc839fe12b90e71aa87d5add75d8cc0c0b615037a3abc16861248f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NLUR61300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1b7be914fca740300ef48d816bbc9a4422278f9f67e2cdad05c9e509a4636b. 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/NLUR61300062.