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 0xd322d0dc37c2300c13401501db4d576f5634c4899205fa3e8a742f6415f05821. 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/1bf5cee6-d0bf-400f-a7a6-726ad06a12bd.json and https://artists.proofprofile.net/proofs/artist/1bf5cee6-d0bf-400f-a7a6-726ad06a12bd.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 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 0x7c7af70a2d33b7cfd83ccac0068c1b574a1d0841bbac43787cd969021f41d535. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/DEWT41800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237157073e2b0bc93b395468ae41a26571f1856d2baa8d4e577639face4e0ba0. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DEWT41800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3589ae11dbff9215b7411a5adf70eb682c67ec8bc3cb189cca5a4b35a02b4517. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/DEWT41800031.
Fühl' mich irgendwie verarscht - Akustisch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d7025c8c61ad7caa7d750d2d97ce26a804b58c1a04779ca9ab579d1415d107. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEWT41800032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a95132b0971a676cc6f0f9595931842ff8ea59eae6803598c449fbc4777f7ce. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/DEWT41800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4e8dfd9143c8ab4916e8d90db424c0691bfb4d68d378767c05385f4c4cbc7a. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/DEWT41800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09639c70cade4602cd6641f19d65365f180e39911bfad5555bfceb156023aeea. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DEWT41800043.
Postfaktisch Denken (Live in der Goldenen Krone Darmstadt)
Postfaktisch Denken (Einfach mal so Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecbbddbf3d47e7bb28904a3b94ce0f64742252c851a5aaa1cf0ab16808d5da8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEWT41900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b1f63b5f40e8f197c1461206120a696affb5f226ff26c0e9278cea008df29c. 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/DEWT41900045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c822cba878f55652ca37fcae5865e44a3a3ea7dab1a8ab96ac5a88d7456506. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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/DEWT41900067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1b5a9a5c56b02689e36e84eacf7e29e9cb4b8593c6f5823f4f42677c1e6084. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/DEWT41900122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c0c5ac985284efa99648713d42b3312486fca6cb7fa449af5b4a8af78669b3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEWT42000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e45ba13ecb52d1ebcf94c57f1fa0083797d68562342393fb9376efe5d7c69e5. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/DEWT42000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8970e1475e71b93111a4cc659fe25703bc5d04e2c7c6d29dfa2f37891eeddf87. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEC162104789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb2ff699c887a32700cb274d30b2eeadd9cff8309093787e50938232859f988. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/DEC162105430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6162a1dcc8f236beae4849974708f0745209635becaed305ac52a9848a149c9. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/DEC162105434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1741c39482d640f7e528f570b4aa2bb91441396f664cf143c0585addf98d924a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEC162200522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058eb05380780ff935fb6f617c484fb49c805290d9e156c7c05541d2863785d8. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DEC162200610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aef35f872cd404d9ce12a7ba220c428eb4077b11d8695d9f2e1d095eccb2db6. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/DEC162201449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6070d620f53d0a0162a7cb65e6815d4f808979d4bc68506476bb330b8710df1. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/DEC162201686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e69ec5aacdc4f84ae6e3df5f3725c8ac0c06a95294835bb034a6eac19936ac. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEC162201697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903c3402a7ec71415a27b01fc8bad5aba939a445212f6f0361f87ab182f09e84. 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/DEC162300071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7487502c8b7168049e093089b86eb22371979a2b171b8ceb1db9cfeeadbb888e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DEC162301555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58769532864622e0eaa1f5af98b1d6005c279e6ec8f9781eb2d14a306884fa4. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/DEC162300802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94dc6c25ba1635136014702a02daaddd12e7ea05359e7fee593c1630db2bf730. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/DEC162300698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f18d050292695035bd5b88935c43ace74893425246df4f41b918d1dfb2d4739. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/DEC162301153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa189678e318e876ffe0ead6e307a85e4013aaf96ac40204ad619d020527928. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/DEC162301557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fad53736ae0355245c1080480b7eb434e985a4e4dc887ae6a40c86bebfccce8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEC162301554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4870a5c4696b28fa0357503cd9c0b659995838bcbac70de3a0505bf5d8dcb546. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEC162300473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe18eb540100926029c86f32c68a57fc486c1aa7c43f90903752eab712e1dab. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/DEC162400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6efeb99eece0bfddd0d9a30baecf490c5020afc0f75e2cda53d6992167c081. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEC162400871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6efeb99eece0bfddd0d9a30baecf490c5020afc0f75e2cda53d6992167c081. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEC162400871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa658ad167f71799e58c9785bba9ef666d07d227ae6e2819f49d0bb1d083d7f. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/DEC162400788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9ba41df4644d88398f0fb956d7c230acac0541d6a910bdc25feaec0d6c5164. 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/DEC162500202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801205f53b827c1ecebd7aa842128d2468dcdeecd0c48a010da15446741b2eee. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/DEC162400846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5be2870146f0057c3847a88a64df76df1bad0dfbf65a726e245eef659ba29de. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/DEC162401532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa658ad167f71799e58c9785bba9ef666d07d227ae6e2819f49d0bb1d083d7f. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/DEC162400788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9ba41df4644d88398f0fb956d7c230acac0541d6a910bdc25feaec0d6c5164. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/DEC162500202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801205f53b827c1ecebd7aa842128d2468dcdeecd0c48a010da15446741b2eee. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/DEC162400846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5be2870146f0057c3847a88a64df76df1bad0dfbf65a726e245eef659ba29de. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/DEC162401532.