Jan Philipp Eißfeldt (born 25 August 1976), known professionally as Jan Delay, is a German rapper and singer whose stylistic range includes mainly hip hop, reggae, dub and funk. An accomplished solo 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d381b0bc2c307ac3634c856a4ab05578bbe2c0f5f407e90e7f5d35c655b40c. 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/b4c164de-241b-4710-9027-3a4d03e1cf4c.json and https://artists.proofprofile.net/proofs/artist/b4c164de-241b-4710-9027-3a4d03e1cf4c.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 0xbae8c0baf342d7bde7348797bee80d3c6275b744602c4152dc65395ec21b0f67. 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/DEUM71400428.
Wir Kinder vom Bahnhof Soul (Re-Release)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b9119254b0a941b520949bc689b4cee82da50c8b1dad7abf3d7e73d1dfbdc1. 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/DEUM70903106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0f5cc3286b166ff485170b7191687d0aa9ebca81077799c285f53dc01984ea. 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/DEUM70703514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d1d93af55bfd1ed1929c2d755d043466930bdc5680a174e27ae7922fc2d64d. 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/DEUM70703520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca9a8b16aef5cd12a48d0374061fee50e7d9ba97d523b4205c0dcf8b0b092d8. 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/DEUM72100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbae3506b68fd9a83e551fddbc82df12bc927ded7d70f7cb6e8a5304f0d70e91. 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/DEUM70602621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2837e75fa0aaf4c9eb7af9e2137a44613cc84280e4782cc7411174272f33c4c0. 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/DEUM70604124.
Für immer und dich - Beatsteaks / Transporterraum Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0303b18ca4b6c4029b2a8b4c6826318af5c5568ce946ca7bd44be23701c8f706. 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/DEUM70604775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ab6fa87bee6d260a9408c7adb5469602eb8ff96f97faeb96e97b7294a50328. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEUM70604776.
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 0x0cca7a5b74b4e745413c3dc27be3722d7e4d0d8386f1b40bcfe157a69cd08625. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEUM70604777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8018983b07792859ec72a14cdd066300be363e7840381366e88582944c951ef. 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/DEC831900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb62060a4cf97df453c5f890f1209df81b021507b5dc2213fdd8bd707231374. 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/DEPI82114261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53e0ed6385c4e8ac33c282d9d0bdcd15a9c96db0ff63bbdda6dddb02fc0f6fe. 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/DEPI82111949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e3776081bb94e627e5ac71ba04b532f1ad180de50914bfb8738663c7e6009b. 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/DGA062408396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95549568efef4bc5677096893f1be291e28c7d2cb29bbe2d193b0d0a9bb10eb. 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/DEPV31210006.
Jumping All over the World - Whatever You Want
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908c471e1e135cca6b0f5592e1564395c57b2cff638bb85b1feda553fa8ab8a4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEN060801018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0d3a2dacd5b1984550a0daf8144638a96bd899d2b14416d5d49b7cc02f2062. 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/DEUM71503953.
Wicked! (20 Years Of Hardcore Expanded Edition / Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee11dcfc2cad21025d06d8447f0be04bc1b312f6236c37dbb3b1b0bc6c219cb7. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/DEN061300387.