Oliver Koletzki (born in Braunschweig on 5 October 1974) is a German dance and house music producer and DJ. He is currently based in Berlin, Germany. Koletzki rose to international fame with his trac
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9168dca37e5216f684042e5c2174351b6be74572c7829c1e514909cca8d39b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/376d2999-1e7c-489e-b8c2-a03089dcbba3.json and https://artists.proofprofile.net/proofs/artist/376d2999-1e7c-489e-b8c2-a03089dcbba3.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8ca9023c09b71e7ba0798386b863da2e6e045e47c7a0fe946a1e99611ee98e. 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/DEVU51798724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc209d54c7934f4179d024c3610728cbe983888f7bab470dac44fcd34b46139e4. 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/DEVU51798728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa867c00f624efaa9baa8b0c520aa2c1fcfe063afda8a5270d31a9804a600df14. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEVU51798729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923244c67a0b38eef8c859d67149cbbe0a5176f8783e64354f70762940706a0d. 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/ES84B1510153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddf3662658fdf5237449485c77195df8308ffc2d6edf75fe436e04384d6a201. 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/DEVU51798731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014c6f60a17608bcaa600eeb7703e068c07779c96546e7b463f605319a72a91d. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/DEVU51798723.
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 0x3e511fcf11cad4d8a4571664aeddf140e34a6a8f38ea0493c6d36e590adcde52. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/DEVU51798725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe730a14be9c1a4e0b8ab953acc6094149ea4eba3414e73cfdfb16e6410ac5345. 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/DEVU51798726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d69285b0cf39702f2a1178a30ab6b9a498a530e21ae4e4f8dee364d0b695e3. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/DEVU51798727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f59e8f268c71de55d1a4eb1223b66b361c984ab07cdf4e9bc386aa4e011851. 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/DEVU51798730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca19ec976652c8612861ce79b5ec60f2c99984b9d05eef91d3fc7b75e6a4174. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DEVU51798735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d562658c6cbbcc9688a22ecc3ac63e3751c3ac6cdad284982ef0d4c8c154f7f. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEVU51798732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9622f963d39ad55ec1d70d0e3b0cdfaf674592b7b7e667d00512d50aeb1f6fc. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/DEVU51798733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ba465723dddfef3d07dfd8c892749877a95d98d00e41a23fab583c40e4385c. 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/DEVU51798734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491f1ca2209f52c0a7101e8198b1c66d21263d1efcd163eb7cb0b727b4492aab. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEUE22057292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f07df5e08d23a2c84d56c54f38727ad1cbf70e0f91a1bd20687739576a1fd2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEUE22057293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75767760a7e619ea8d2e668569dae15a5b84ba8983e77fcbac40587254e2429. 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/DEUE22057295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080286b7a045372579e23afa35a06cb19c3ed7bc82e1145117dbbb866e71babb. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:56:50Z), 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/DEUE22057294.
Schneeweiss 14: Presented by Oliver Koletzki
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa182e7a46f39531f0facbbc5f765d5981cb26efe6157bb8cb7487a079e79b0. 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/DEXO32235896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cbcb286f782e04517c5c90bae42a3dfd18f79b87ab9e97f0ee55ed6ad9ea50c. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/DEXO32235897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fddb23120a59a703e8b7454b9b059717d3d5c582296e2af7af086bff71769e7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEXO32235900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba37dde10335f43d1ec0fe711b89e3100714ac7abf6a877aa97aaf3868fa684. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEXO32235901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffa8e021565c693d11a8e99c1a2b77f0ef00f498855105ce14f217eb68c81df. 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/DEXO32235902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881e486dcf52e04e43ef33320ce92c33ad898de97a5ea4f3853c7d4b4316793b. 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/DEXO32235903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4dab8249c3de317870400a685c36405d141855d0e19ce66acbc731f5d6041bf. 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/DEXO32235905.
Schneeweiss 11: Presented by Oliver Koletzki
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba278c11774696f9f26fcfa025d4bc838414c20cf104e954ce1b1a25950dba9. 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/DENC31800201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf964765acd6d98b3ea94ea65cd63dfea1ca67af4acd555e9ecf055680992817d. 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/DEXO81980842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdc77c6047a446be7933c669c4a15f3b57f223084818dd2604fa6519ae36370. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEQ021906347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6468bdf11a5ec6c3cf28b1f6d1dbee5529046cd3ae3ce9675460be2a96b013e. 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/US83Z1912381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186ae0b31541474028969d040ae435fe765c11bcb173bd806cfa9931ecf3924d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEXO81980845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06623f9d619a415d5947ed5adbf6afd563d372518f4ce33df7a170f32ad01463. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEXO81980852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe047c741196d75a1753fe46025cbec8c1f48f33e257d5529b617bfd312ae845a. 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/CHA812200309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009f4d296be2b5d9a75e920eb6f14384d3daa61cff6f29cf23b1a043149f1757. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEUE22057273.