Christian Fennesz (born 25 December 1962) is an Austrian producer and guitarist active in electronic music since the 1990s, often credited mononymously as Fennesz. His work utilizes guitar and laptop
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 0xf1b5bb16d3cc6cd5162ecd7ec6ad4030166dfc988894fe3fde46fcd8f71a4d2c. 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/b8c4b20e-bf85-4732-8577-90637d483c72.json and https://artists.proofprofile.net/proofs/artist/b8c4b20e-bf85-4732-8577-90637d483c72.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 0x2d1f4293348e2bc708b4a317d660dcec3d1a9712735f3f05fcee1a39a49f8205. 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/GBJYX0732201.
グレン・グールド・ギャザリング
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865de73876662773b8ac7272fba94630935f05ac5ad9bda782b3bae57412e14f. 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/JPU901802624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d6c2ed41d13cb260a888240dc7978ec80cbe319d594c03465e8bf541f03549. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/JPU901802634.
A Caged Bird/Imitations of Life - Fennesz Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168030d3afcd8579664b1a911535a43f5e069b7c9f144af38daeffb8c431b82f. 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/GBCFB1900233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8d5e90b32a6ed7c26d394c469e10e67adb6b5d411a39d4fd21ca5798cf8ca5. 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/GBJYX0213202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc3c47a147083a391ce59085f7b376d6e3f82939246d7f71774c02f456cda82. 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/GBJYX0553213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20cc797f55894a1071c0dceb5d957950690a7c49e6b6c4d78f910ce7905557f. 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/GBJYX0553201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a3f022ac29eabf605194406e1a5eb26c84dcd4abfd15158f62a946876a7d64. 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/GBJYX0553202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55798093d1870adaa751d138035313b091ee9f38a092d9e987bdd59cf994be64. 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/GBJYX0553203.