Joachim Heinz Ehrig (born 15 November 1951), better known by his stage name Eroc, is a German musician and sound engineer. He served as the drummer and band leader of the German progressive rock group
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 0xb96ee2694a5275df107860fc38769ef5bb436e077cfb4326a32a9f29902c2026. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09e41bc3-7265-478b-bbe1-ab0684d8baec.json and https://artists.proofprofile.net/proofs/artist/09e41bc3-7265-478b-bbe1-ab0684d8baec.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 0xc68dc30d546fcc9374f252636f8b9d950f1493db46ebbdb65e3f6aeafa970f47. 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/DEUM71200539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7555aa56f9606923cdc7f695c967dc727ab3f476b5e1101a478206f5d153ae4e. 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/DEUM71200540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5051343b0d0479844d25a6dafa4a412f21ee4c970e54ea48985e4031f54f01. 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/DEUM71200999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd775e5f8d331ad6cbda7b5320fb708ab5a0a2e932d79c16a15fc188265c11bd9. 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/DEUM71200546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329a2d90c395c4bf529779067e6e02aee971368aab8278a13a7b7288b9e44df1. 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/DEUM71200547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd316538f58ea743aa2d9611a731efd9b6ad938ff099d7028de17182814fde63f. 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/DEUM71200548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407e8efcaa34a1dfff4d17a74fbb33778a8fc32d8ab551a6192729f9f055d880. 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/DEUM71200541.
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
Changing Skies - 2012 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2046ee75151520ad0a1e11bccfb8c743efad2d0ca952d6a77801a78023441e4. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DEUM71200542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57ee764a480b97634bc1f5c721d92b2872c7f9b0136dc9653e12cbd6c5a9d72. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DEUM71200543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f4cd5c970be06c04c50c7180fc360bce24a7c04e526e88d021bd902f28e549. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DEUM71200544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1e3419134dcb18e5f62be088c8e6b0c08ca55b1f3fcd298ab5296d78915d99. 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/DEUM71200545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926fd9a8fc27a8d61a6fe4e562345d10b32714ef1f7e5f571019e03e5f485206. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEUM71200549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa766e6852bb290d66e246729feb29394f82dff13f9eb0c24080e9a9b9b8852. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEUM71200550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b9ad0626efba502ff4bc2f19781001ac187dc037e5fe2dc409a0a591c73d77. 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/DEUM71200551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626fcc88149fd7e56b98946b08162e19e8a0f836323c8c438d9cab3d187f3759. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/DEUM71200553.
Radio Puschkino Reloaded - 2012 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16312648b9ca58a0a3324211431548f1b8652e82bc99bd28582193863be4fdfe. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/DEUM71200554.
Wolkenreise - Radio Edit / 2012 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc885ae4d17e58773ef76b8d7f55faad2d9a93141ac91574d3f81075faf3027. 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/DEUM71200557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3185fe6d798c2675c08c1b92aa7fa6d9c1bedef0cbad9bf05e1d8493370844cb. 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/DEUM70503248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe686165365ba95496894d69fe5812cb51c6b189aec9c40a7efba41de9b4f8c37. 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/DEUM70503252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849d38dd9b4fc7ab15d950183d6e56a0f471184091f9db1a23f87d2704a1ee8f. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/DEUM70503260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c735daf85b263863b16a2afe1f7910006b845147ae67c672039889600f3888. 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/DEUM70602039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86c31949914f0ee7d5986709bf1d736ce163ce13788bf1f400948bc26f9db39. 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/DEUM70806954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0635ab1b1005e4a32ff670566ec9d8b5215719751be18b6e89b933e0f95b1578. 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/DEN120502004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee15d42616432f2018986fa82dc0e9d9068cc160558cb8a3cecd301e33a308d. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/DEUM70806951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689e82c3ad3a13e337f5955d82ef8a049360a8e5959e38d01d1f6ea6c414aad3. 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/DEUM70502970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936c79341c7af3b0d14cf241db2f2abb4672442a2d06faec3e78435db503bb4c. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/DEUM70501863.
Wolkenreise 2k11 - Waveform Atmosphere Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588653390f3aa52ce052ecf1214ecd912dade34e0923016a31dc17619aec1e08. 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/DEB551120545.