Thomas Köner (born 1965 in Bochum, West Germany) is a multimedia artist whose main interest lies in combining visual and auditory experiences. The BBC, in a review of Köner's work in 1997, calls him a
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 0x6b6cc24084c126b903af30169d4a087eea3424aa81e7788790712e5e27f2d210. 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/91f532b4-3cab-40cc-8b8a-9799cd590850.json and https://artists.proofprofile.net/proofs/artist/91f532b4-3cab-40cc-8b8a-9799cd590850.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 0xe997546437be595124816b89eebb8b99105e0223ea9d2930ca15984ce3ce074b. 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/DECY52202024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc40f6775b1b3ff8d615bfef6c6777c92c57613a4a9a3bfae6aef8f908183277. 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/DECY52100825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31cf2418dfadb4dec7de6dc5fd50fdf5d0fe14207722e2112568d14ef30c46f0. 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/GBJSN1007101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850cc65d2d3d338761acfd806373fba61023e6de979bbcc7ebd6c2875c5fbc87. 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/GBJSN1007102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd41c18c2fccf92c78c55fd05b3a8a209ee42fb8682ae4cc2c2737948a4834cd. 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/GBJSN1007103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081bb25641ed1ea1f5472fbd397b8c4fce85e11e1db998c497e709c5f4f05476. 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/GBJSN1007104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6380f0e11af80c28bdecd9db96e2e9d9f77f624e81f135b6200cd007c438cadf. 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/GBJSN1007105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3507a83a2bffa743603d6282bc30c02d431f74deb7cfb0d3839b59519f98df. 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/GBJSN1007106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a7eb7af45917851123fd7b65c9b455fe7b9090c36a6fcab5849a793ae5201b. 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/GBJSN1007001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ec4061683012e4d99ae6fd84fb972031a997aac5aa9fdb6dce020bd0b3496d. 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/GBJSN1007002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c5966e42171f5e14f5395bc66251103eb4586f1ed08efb50f82d1f11d63e6d. 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/GBJSN1007003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73764a72b6344c99eccf154089361cfec1e30d32fd48a519d23ce3959b5d2e07. 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/GBJSN1007004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8098c002e9f40bdfa985812047d41a7d0e5d85af05861b8a53841c9361e7445. 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/GBJSN1007005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d2478d40f97000f4f587246d4c58bf3e15639249f0e882b2757a61008acd1f. 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/GBJSN1007006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ca83595a1539c8a83e9ed7a0489431fc115df4c1f2b783c7ff42f452bdfbc6. 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/GBJSN1007007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fbcf501fedd7caaa91f8c843bb862be490b6a6ecab21bf4e59cbd0c1bcb8f1. 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/GBJSN1007008.