André Knevel (born 13 January 1950) is a Canadian concert organist, arranger, accompanist and organ teacher. He performs the works of major organ composers and also improvises on well-known themes and
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 0x8103a0719a8cebea11ba459c2ca489f1db1432d45ad541edca7071f2f9e02c84. Chain 2 (Bitcoin): anchored in block 953636 (2026-06-14T13:03:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/35b74b6d-be0f-4f16-8376-005b7228376f.json and https://artists.proofprofile.net/proofs/artist/35b74b6d-be0f-4f16-8376-005b7228376f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Veel Gevraagde Improvisaties Op Bekende Nederlandse Orgels
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 0xf84a59cc9c8d89b31e2c6a240f1297dff8a495d08defb5a114c43cb98e4b3c09. 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/NLD020500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fd85d8326501059b3ad86211c83753ecaec6164a35050def3691e40067ada8. 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/NLD020500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeebace75a583dcd754929c0fd452631107bde078c6e61f110f65078c82723f68. 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/NLD020500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbb873ffeb78f9b8b7568e4d85ab92e37739773e0289bf283afe4dffde0afc3. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/NLD020500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb79ba66dca7fcc7e7349b5e1920b36c4219959bc0067c39fa25e7dbf579566. 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/NLD020500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cce2b1f1719b7734bb0b380a9a452ea54866ef12151cc708c12be68b167b537. 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/NLD020500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f7835005af6761ce7e39b11af4123e3a223d1b37aed4b84413e9a6cd41462f. 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/NLD020500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e1aee71ee58c17e02dfcb7d7293f7686d8e71c0be2d42473d925be921aa281. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/NLD020500030.
Lof zij de Heer de almachtige Koning der ere
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c37e16bdc4096ba04c3281cd587b4c8e7749fccb52dd8cdde88aee4e0404044. 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/NLD020500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb843c89f06db2eb0053aea070ab81add2f6a805ef547c807fb1a1a4c2b1026. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/NLD020500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0761d477dae083171122dc0e7f7d15778271712e673ee6594c6c32dfa91c0963. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/NLD020500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f35083389924850904f49a06cfe93c7fdfcb72de7d2ee3441ad297a776662a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLD020500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a2600e44ca76c179c0067842bb05cfa2db4bec0745f20e3a152c1f62d548d0. 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/NLD020500023.
Improvisatie over "Ere zij aan God de Vader"
Het Orgel van de Grote Kerk in Apeldoorn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1134a0bb348aaaa762553db76fac907d7e8f5589efad2a843c3e651fc880a69. 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/NLG620591333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b1f0b360a25548e9545414e939154cd6ffd76e8a37564845118c740c090200. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NLG620591334.