Tim Knol (born 12 September 1989 in Hoorn) is a Dutch singer-songwriter. Biography Knol was born and raised in Hoorn, where he started making music at the age of 10. Locally, he made an impression wi
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 0x9db7109ea58f0d47806eb19bd9aa6492fcac5c380bafce14609b1edd0165cb00. 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/e12c85de-0b71-4d7f-a95a-edb1496c3bdf.json and https://artists.proofprofile.net/proofs/artist/e12c85de-0b71-4d7f-a95a-edb1496c3bdf.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 0xd583333e32abe92d4ba777907a319ad41d2b3b4c7978d1ee3b910ad281dd21f4. 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/NLB601100070.
Letting Go / Glory Days, Golden Years - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a60ee526f8b971da746cc9d97c5d60bffe63784f8069fc07d79159a57c33bd. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/NLB601300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9e6ab77aac34106585e71621a83a1112e6e396e72c234d75b31683baa98fb3. 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/NLB601300131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe49f92f8b28c68385c740281e9b9d497a25f025185f8dd89a0085566ab05d4d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NLB601700128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8e102ed76afa1c02bb34c80f14d3e8758b3322ff56550540778ad3992b6350. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NLB601700139.
The Lost & Found Tapes: Compilation Album
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95a1589b590d6cf4ad54f49375d9255bea8b922807b4a8c318bc8f4588a39f0. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/NLB602200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa8ff641700cf6f9f019a214d659355e3ffbc8e3674420965f175ddaed5753a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NLB602200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcec3e58b8402e07c669f8b89c6c2bccedaf9706d108697a0bc1a96de6d8605. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/NLB602200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60584533f34797f5776c20fa57f15bc43ae1dcb663485292dc5e132c44567c14. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/NLB602300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d2cba3d79975b4f4961b143d947a171f67dae84d42cb5ecb05158402a5686d. 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/NLB602400411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5b1d09366bc6a8fb1cefc3488b8cff0c811248ef90beb73d5ca3b0a697f1a6. 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/NLB602400412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5316dcf8b0937eb29f9fe3c5c0161493a15b72c5192e67c24391465cb67517. 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/NLB602400413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1dd9b6b8f25eb9ee808c276f832d91c31eb4d75f5d643e7e72bd8e8c272a29. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/NLB602400414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5484ca474f4ecf480c8ab3b45848dbea044da0098d18d73c4344965f120744. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/NLB602400415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449f5f717119a4fe20b084ad8cd4072e113c154358b9c722ca2b4a9bcadc3a1d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/NLB602400416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09dc8022c80f201f2317e8ef0f91dd6d7734e444129580f1d82e571d96721fb0. 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/NLB602400417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e34edced513e94e3a3cf2bf211e7622493cb8546858c96f2db7157306f52b88. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/NLB602400418.
There Ain't Nobody Gonna Miss Me When I'm Gone
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9319f6c62806f99941e4c66842ccbbfe8319eb2cdfa5a9e2eea809ea54527605. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/NLB602400419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff7da29ebb6c9b16ea9786197ee2a3460642b22b0e5ca21f566ed40d1323df5. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/NLB602400420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0da247bf270a3d48a5c18423cc13bb6ebedc1fa582a0eada2700bd6ddfc0874. 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/NLB602400421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15899fe767078db0efc69af0a1c990332212dc281aa654cc56f0c857b9102fc. 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/NLB602400422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1544274f945bbdf02ad771972a8ef2cec93199fec72627942ff5a8fbc81eb52b. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/NLB602400423.
Live the Love Beautiful (from ‘Let’s Go Dancing’ the songs of Kevn Kinney)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308bbbb4c4cac40ac2c1440976df34fc102d241e79e413dbb8661c200287b61d. 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/NLC242100451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e740147d5cbcd12b0aa821937a45678ffe4d896cf4377c3eefaff3c250bdbe1. 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/NLB601400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122e57da8f72c3c55344e3bfc46da8e10a97c6a3f6e0690506e88afd4489ecbd. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/NLB601000350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe734943655ac14fc078672629075ef46796449566ce4493e482e2828738e52. 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/NLG662200444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1fec90916e47a1eda1251bfdee9633bdf491f796f3a4d9d4813e22a51e6291. 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/NLB602300372.