Janek Gwizdala (born 19 November 1978) is an English jazz bassist. Biography Gwizdala initially preferred drums, but switched to bass guitar after hearing Laurence Cottle. Gwizdala later moved to the
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 0x7682960a3456eee2e580dbd36a95b7232b7104793b99d8ce21974b17e2b24847. 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/d92d8371-ee97-4445-99c3-53d950f3512f.json and https://artists.proofprofile.net/proofs/artist/d92d8371-ee97-4445-99c3-53d950f3512f.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 0x0bca5af30d66b6ab19e3cc586a6106d88c83630f902bdac4e51edc8bac2aed37. 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/USHM20541310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3851e4a0c4e920fd9378ac4907bdbf5ecccf4a9f111bb912bd3cb2d6fb184c66. 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/USHM91045077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c08463d1e8c085aff3b5be5c9c4c6802cb5611610ff853d31c656d5dbba97ea. 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/USHM91045080.
The Space in Between (June 17th 1st Set) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8743ddec5ce93799e3443354f68ea5091875bb4ad3c5bd0c3f67ec9beab7f3. 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/USX9P2047672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a0d1f97f98928aa5654ac22669b6481f37eb86f1ec20f3db94fd7442dae7c4. 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/USCGH1643117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2631d335a3feb10e252312286a0d5e1fad263b11bd0fcd1cedbf536ee7ee6f. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/USCGH1643118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce28186f0658d47ed1e1c5a56b55b518b214cadcc78f0635577c9d535db79c9. 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/USCGH1643121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2ba09d481a09328b893acdedc6f98895b49e9cba68faccccb16ad951a8b000. Chain 2 (Bitcoin): anchored in block 957848 (2026-07-13T10:31:25Z), 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/USHM21954278.
Mystery To Me (20th Anniversary Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab0c1b49cdbe30b4843cc13b608653d48106d577d5561520edaab0d42f384d1. 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/QT3F42422417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde07ada985251e0ad1b73f9981502630e1e8bcf06eba738adae3e65fd5c336d7. 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/QT3F42422418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7bd11c0ba63cdabf51586cea62e18b38fab3d8fbe0d20b005da6e8f9b695a0. 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/QT3F42422419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3891ecdd66252d001288edc43686519481914be68f97e5e3207c90a79da37ecf. 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/QT3F42422420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa168db9eccfc834783f47276904537632e5f05926da483c13cb9713c6cdd1cbe. 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/QT3F42422421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d477bbc3b961a096ed5d070f9bb47586bb77c13b4e1ac49cf615ac13eb9890. 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/QT3F42422422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573918d8674ac5ab05315d3781f1a373dd8a44b626b6d3cf62ced13643fb608e. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QT3F42422423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2aee25bb1687641f28cd4182b83d1cc4bf951775b608cf218632a7f607b08a. 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/QT3F42422424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd04a080e6cf2170c0fe7b6af0d710fa6af866c62ece953d1e4e39501b6e9017. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QT3F42422425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf359ca447098a2704dadf51498d0455469736430c018c6a56aa730d8b4406b1a. 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/QM6P42322144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5945952c27db191b13bd2cc66d4a1284a175dd7bc1e275313531633aff493fd6. 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/QM6P42322145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8040b5e630311a18c8632c57a36d6cff04afdb1666fccb19e650d44f9dcf61. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QM6P42322146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3665ef96e63334fbefc9bd22571c7a12655acd14696d75999c8c0d0649ca16cf. 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/QM6P42322149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f6f6c4ee9dafe185bff5c6b943e4c908ec1f5ea5719b977fa91a700551a400. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QM4TX2321452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b94549c7df0eeb67881cd064b2be46a58acd1ed58ea60b40c1d72a091194af. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QM4TX2321453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ad85cc339525c3ca768a60b4b4d0a390c3da73027f82855bdabe357a76ee4f. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QM4TX2321454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5142d95312d751c999b43f271454e3a456fa4a94adf41d6a683478507b6e4d4. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/QM4TX2321455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6936f8b07d4966f5311e04193d5a06ac4d5463556ccb71dcde730c4f30b1a6b. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/QM4TX2321456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2166803d5358f999d1f833292411f535e934fa5ca65b3833c7e2e138a461c0a8. 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/QM4TX2321457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fb89c873eb0ecb27f464f71abeba23f9fe2ad440dab35068e05e0dda292131. 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/QM4TX2321458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1aeab04549f126d9e323f8456b3296ac48c13b57c3bbb949560d85a7e1b0b0. 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/QM4TX2321459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b35493aa38fb2571da7a71ed2c5726bd7e71db4730be4dd5757405e1ae892c. 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/QM4TX2321460.