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 0x67db68efbc9d06a50b5bacc6506f8e3eae9b0893179c907038dc1f0b43b327a2. 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/0455fd18-67ea-41ac-ac18-03ff54be15bb.json and https://artists.proofprofile.net/proofs/artist/0455fd18-67ea-41ac-ac18-03ff54be15bb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Wirtschaftswunder: The Sound of the Economic Miracle - Rock'n'Roll, Swing, Kitsch & Schlager from 1950s Germany
Kindergarten - Well Known German Children's Songs in Duet Vocal, Kids Choir and Instrumental Arrangements
Kindergarten - Die 20 schönsten Kinderlieder in allen Gesangsvariationen auch als Instrumental zum selber singen
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 0xc9043d5449fb8e075f0a41d08d8cf859646dd1a12590b0adcd82d4f69a078126. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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/TCADA1782609.
Underwater Music - Trace-Music for Underwater Documentaries & Films About the Ocean
Shopping - Happy 70's and 80's Inspired Feel-Good Shopping Music
Das Chormusical Martin Luther King - Ein Traum verändert die Welt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41fd071a470914df198376c444cd519134c2dd08133aa07b4bf3a900028e7d11. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEQO71800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160cccfad021265c01347867501d93b551bd9800f2f14240992d607970b04301. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEQO71800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6593d10391b899e508abbf0729fb638fd86976da3a6f6de9b9ef75726544e3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEQO71800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc9ec95c06d037843c6dbcbef6f22a0a61889e9d2ae7a31f7c42282202c6675. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEQO71800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b319dd2b95c372f903115a1bef1a5cb9bdaf6154fba945dd0ce8245637ae7d0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEQO71800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d18299cfd07382f9af222b3575eeeff34d7cf141ba95ae49453881e5f36d0a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEQO71800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20e1ee8fd51ccb345cf1fb201a40354e3ec0e6b296d11c4686bba3aa3d62b23. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEQO71800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c520d50a29e99922c88fb95f81563a2714cfa90346205747f1e13e210833cc. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEQO71800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1bb0b2920ef10dc426422658fd26691a4028ecbbe44ed1b5c972c91813b4ab. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEQO71800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e55d139c5667ca5d84913ac77836b6fd8539aca74ef34240444ed6d436a4e3. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEQO71800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998e0eac91b98a61fb7867ba0131cc0e4aa48b836157e8129efe1a7962b18f54. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/DEQO71800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0f18370acf2528d38f0174fe974af77dd859e18ff2b0274c6134a6efc5cd50. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/DEQO71800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759401ce78f908160e7174df5a9269da79a44daa8ade102244c748bb633077e2. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/DEXT41900550.
Gott wird dich tragen - Glaubenslieder (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e31c95f40e9de9d560d835ab4af93570de84fa39a7aa81ce8dc7128762da2f. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/DEAF42500165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95d0fd189049dc5de4f9e957cdb3b6b5cef203e200dbf7a613d9ae88ceb1583. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEXT42400646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76a1cd16391a0f6eacac8952d0bdbe961c7a50175b4715cfec7c4a4d7432a60. 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/GBPS81513120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc323fd221da512ed349114e21207697cdfe32fa3b97d86d38f8c0ef7322b3188. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBPS81500687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76a1cd16391a0f6eacac8952d0bdbe961c7a50175b4715cfec7c4a4d7432a60. 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/GBPS81513120.