thumb|Lorenz Büffel (2017) Stefan Scheichel (born May 29, 1979 in Krems an der Donau, Austria), better known by his stage name Lorenz Büffel, is an Austrian DJ best known for his 2016 single "Johnny D
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 0x39fd3985e652dd6b7ebd281127d0edf0fd64ab5e5df87522f67541035c07268b. 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/0ec69f9f-f502-4b31-886e-6b9ff6c79517.json and https://artists.proofprofile.net/proofs/artist/0ec69f9f-f502-4b31-886e-6b9ff6c79517.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Der Zug hat keine Bremse (Mallorcastyle Edition / Averro Remix)
Der Zug hat keine Bremse - Mallorcastyle Edition / Averro Remix
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 0x32b5be081f7965178505386eb06e23068bdf3f7836c2a1ed9a9afb3afcd90906. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEUM72307785.
Der Zug hat keine Bremse (Xtreme Sound Dancemix)
Der Zug hat keine Bremse - Xtreme Sound Dancemix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5204e7da5136cc52e8e7fd054d4528e104760394f2f10aafb3ba7e603d945ef7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEUM72207810.
Der Zug hat keine Bremse (Mallorcastyle Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634b53a8254c02eb6c75a6e3319e392979abfb8365ce43603e878b864f99d2a6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEUM72400571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d6b4c3271bd4b5b3ec2ca6ff6429ffbb1e433cb6e258bdda413a5b00af4ad2. 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/DEUM72301283.
Trinken ist auch Sport (Noisetime Remix)
Trinken ist auch Sport - Noisetime Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e8178b6cd28ec74ec39b5c5236d7fa4ac9e4ef682414cc292411f99e0bdfba. 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/DEUM72300449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35bc527e315ca02496a48ba3cf14e3a4db73b6eb7511e89d2f528f825e037da6. 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/DEUM72300369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599f15dd4002df2ce0f510e6d2db250437c36cdfc9ece65f3f1553d3128c3fbb. 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/DEUM72207740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158df1afd48fce0d3055b40db5bd2be45f2bb4a98e36b7e3d2b4ea32c5b776b9. 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/DEHK92104656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7729fa82cade9250fdec11777059bda3baf74fd0acdf4c5a2ff444b0771b074. 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/DEEQ82200081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedce31a5728936e8d75b9f5174f3f225aa4e87ecf3ba0b401365829c081f00d. 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/DEUM72202560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f771cb1d9058d18b8b7ac9edf589fb23b0c9ba7d89e6f2a8cc819cc21753e1. 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/DEEQ82200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36908761827a9135d8a42b2c6ccce6ddafa91f09b6f31a65bac74b5da3d3be5. 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/DEUM72118760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9431ac3d3619934b1bcd8c9170dc142612f78718944dacfb34630882993371. 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/DEHM82100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6e5822af1675b9a4cc2d712d471adf616d2026ee0713b9179980a4741eb1f6. 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/DEHM82100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcec953ba8f3ad1a35b350230f8a239ba0bc41f436fa33ae1fb08e50cfe5ba2. 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/DEHM81900957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfca2855064aa6c634be9336738fb321716c132db7ee3af2aa696fc68299a1f. 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/DEHM81900760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe509535b7d5168eb83e55a2c78a198814c251edbef6ed20dde28cd39160abb8a. 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/DEHM81800519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c4c95d5e5b1700feae0978566403bed642b17a8596e9326b314b547fcae5f5. 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/DEHM81800466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c3d850e35a93b5cb809bac2d870ebfb74819fc82a93c801e45fbdc3a3863ff. 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/DEHM81800338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2ffc87f463e40078d83568b8405785027497c0d488dfe635155c553859e46c. 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/DEHM81800294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc10cb6f5da61ecfaf58037f97acf760707f1e569537a19383dbd35c580ab8b. 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/DEUM72408674.
Johnny Däpp (Ich will Mallorca zurück) [Krawall Mix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3225dd97253fb3e832e1a673cfe97fccb7fff17624edc5218d8277dc4eec8907. 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/DEHM82100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedce31a5728936e8d75b9f5174f3f225aa4e87ecf3ba0b401365829c081f00d. 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/DEUM72202560.