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 0xa2827c2fe401b7b1d2e4f0803723f944b0f44aef3daf8f5c576d29c2fc35aa28. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b41d3963-9a0d-409a-b652-19598331659a.json and https://artists.proofprofile.net/proofs/artist/b41d3963-9a0d-409a-b652-19598331659a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Akte Mitsnakker (Der Eine von Die Kranken Schwestern)
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 0xdf532cc38ad7d0b15fc010b54b830eaff0c5077c60e614c96c47030a497baa81. 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/CH6541756536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef6928990cf79640858d5ac40a5c1a7014bdc33c56285589a72f1a75c2d765f. 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/CH6541931232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7affd6b06590afdf3cf3bd5944da4430471a310cfc008c8fd371b6eabd2d41. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CH6541931233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62eeeec89476942d7f8f0dd3c906cf545f0c22e7a0e4163fffd1bd8f9cc8efdf. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:25:56Z), 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/CH6541931236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713cb0c9576c040e1ca31026d25b0d8522700fd6b83a605efbcf5456d9813cf9. 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/CH6541931238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75fe33e139d2d30101270ab11aa8d25fecf6df394e75f64081b2558b5d64365f. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T16:00:52Z), 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/CH6541931239.
Wildschwanbrook III (Alles geht den Bach hinunter)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb2ed406b55ae87e420594ce7eb6eaa1757abfca6b38b1409f848a592793906. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZNWR2218548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4894f747ecf91aa74ab2d6f3728be163faaa91fb13030573ca02c4a8c584ffad. 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/QZNWX2211824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3c4d60af123f0252f91aa084ff5d39bd500562beae95b391f9940d18c0648d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZFZ62422096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4c2fbb0898b01b8ccc170faa0c5acd3601ab1818a6dc2097a982bab6f50394. 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/CH6542260905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727101642a76ad959fdec13c67f8aff0f7d5d07035c83dba1b6786a4cdef2d92. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:51:25Z), 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/QZWFH2401275.