thumb|The logo of the group thumb|Die Kassierer live at Rock am Ring 2022 Die Kassierer ("The Cashiers"), also Die mächtigen Kassierer ("The Mighty Cashiers"), are a satirical punk band from Bochum-W
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 0x0e76ba5cbea52fe2c638110d0093bcaf67ad2066eb7a2eeac627b6c5ef37065e. 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/b5cdfa9e-723c-4dde-bdfd-48a8c95f6e0f.json and https://artists.proofprofile.net/proofs/artist/b5cdfa9e-723c-4dde-bdfd-48a8c95f6e0f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Haptisch - Ihre besten Aufnahmen aus 30 Jahren
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 0xac13f6adf56310d4d6fe92a18a120b8024e1afe17b20a5ec1d59c1ca1965cff6. 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/DEZ651365634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34cd3c1bcfc85e102f5b73cf98eaedd58a0423a737067b160db809fcce92015f. 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/DEZ651365635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6ab953b2739c1135fd088847492d60c10f19ca71735c1aecc52786a7460563. 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/DEZ651365644.
Das schlimmste ist, wenn das Bier alle ist - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d52100b07d77999bb82b21bb1f22aa7f4c132c0d66d24dd0ec55ac72ab894c0. 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/DEZ651365649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33de2aa814f0e744e186b1ae1d8ff63829530a5a5473f9228595c5fdc827eed2. 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/DEZ651026419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d792ebbaf11ab4b911697b0faf870b5b0d47dadfb07b6ac36385c35bd90e51. 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/DEZ651361600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd687842249e008b8aa023c152b62da50db8ca30a3bf5ea1b55ac0ff1117c73e6. 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/DEZ651361601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e081a7345c9a53dd151c6f9e323daf068ebd709b5b05c59d329714394dbaa71. 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/DEZ651361603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856d191773ca855700cabef03fe875034b69e09cc473fe130c197e13807ab6b9. 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/DEZ651361611.
Das schlimmste ist, wenn das Bier alle ist
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68aac77d0b50eb94d6dd473665009a4f91fda1a05388a8cbdb1cf5c9be61b04. 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/DEZ651361616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa513ee20e24da4978405ed05bafedc1cd9df374960c4b92172179800f376b737. 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/DEZ651361579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e05a8a2f8d228dbd95de6a4fa2d70dd2db285260d9fc75e7ae8569e356112b. 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/DEZ651361581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66928d948f8ae5b4d5a45944ee9a8b9dc25dbe6c2979e695355af8e2e1fa3fc. 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/DEZ651361583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8423cb3670be67e50358ee98540e989b743e935124c0c84bf3fb53854c906aa8. 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/DEZ651361591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849376030d569327b51c1032f15a041104083266c0bdd3550195a4918c02bb9d. 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/DEZ651361594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e797726bc4e08f0d4e725fd86d0a5aca1660626955d66622fc9069b4315d3ec. 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/DEZ651011411.
Ich töte meinen Nachbarn und verprügel seine Leiche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc502fff2558ffbd97eda8a3ee3b72d246bbc41b917fdad7fa4b004e5a969f106. 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/DEZ651106263.