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 0xa4325b6567281167b77de84c0ecff40bfee6a83b55d208cfa66ffa0fe4841ce4. 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/ce18ffad-92ed-493e-b356-39b2ad349c44.json and https://artists.proofprofile.net/proofs/artist/ce18ffad-92ed-493e-b356-39b2ad349c44.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Zwei Männer und ein paar Leichen (ungekürzt)
Kapitel 1 - Zwei Männer und ein paar Leichen
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 0xa0595711c70b4e67dd44d9b6011780a515dca4acd3b2cef1648ea4e56302c51c. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEXO22170314.
Kapitel 2 - Zwei Männer und ein paar Leichen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf43aefeb63c4a26c4ee535bc3fbfddf410c74642b04c7573791440b06b3efd. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/DEXO22170315.
Kapitel 3 - Zwei Männer und ein paar Leichen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267677ead957e129637f375bd0f8e67bcc0ec97181b23d705cab885606ba1ee6. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/DEXO22170316.
Kapitel 4 - Zwei Männer und ein paar Leichen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144b44b6300f1b4327f4b5a0c65384b56de746c7dd3e79d8771e0af290579bc9. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEXO22170317.
Kapitel 5 - Zwei Männer und ein paar Leichen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb25ac8c055dcc95ead51fd60dbb37bae3c7071646e8bd6b6a19ce39052de648. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEXO22170318.
Kapitel 6 - Zwei Männer und ein paar Leichen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f2a655163e9640612460bd62186db4b8bcdc7408b5a6551cc5ffdb2e29c13d. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/DEXO22170319.
Kapitel 7 - Zwei Männer und ein paar Leichen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7813cf2c67f8078cff168a392e760133ccac402e610fae29bd1526c83c890bf0. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/DEXO22170320.
Kapitel 12 - Zwei Männer und ein paar Leichen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e629fd42c6de4cf36e310ddd0ff15b433391b16e5e18e17cc076fb6b09fc62. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/DEXO22170325.
Kapitel 18 - Zwei Männer und ein paar Leichen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb208e1970416c209889fc1efab40a602960e75503328f88773e19a59a820ee2. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/DEXO22170331.
Kapitel 26 - Zwei Männer und ein paar Leichen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c90b256dd1936af983c780c3f0cb293c7eb5715812e5789ee5cd6247841318. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/DEXO22170339.
Kapitel 27 - Zwei Männer und ein paar Leichen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f45b260fab02db49b9c854ee52dba30e4daf50f3679a1743d9d4736bf06c1f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEXO22170340.
Kapitel 63 - Zwei Männer und ein paar Leichen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ff80be722a48c26ba8577a8436557a276d8895fd41ef97bbb4dfd4935c1b02. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEXO22170376.
Kapitel 80 - Zwei Männer und ein paar Leichen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c5dbbbdffcc9f5f185ff2daf8794767be460328c74240b4b6155cd8a0e29e3. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/DEXO22170393.