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 0x87c97fba569f69bff68915892bfa94b5b2ee5c3032ec4f04abd237fc755d9108. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d32c5100-da25-4c5e-98af-b1b136322499.json and https://artists.proofprofile.net/proofs/artist/d32c5100-da25-4c5e-98af-b1b136322499.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 0x8f97a0dd7c19495691d01ee500a46b2217ba168eced6f603f8d0f943a6e8ab08. 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/DEWO61700054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93af09354a26249131702e5cd19a4fc9fdc961a6c761bf2dae955d288fc7667. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/DEWO61700061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf996dd3a43331b6e7e46ad1e61043f76c15a932955b902f1ae2c93f47014b83e. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/DEWO61700233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585adfef45ed6c007bcd7da4f2efdb16af5098f6c6ace66c993ced439fe1135a. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/DEWO61700232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d14f35b72968b9dff27b54c99f5d9999d423854af198667bff7f1199b5cb7dd. 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/DEWO61700234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048652869a61d2142212e474b1be19c8a40155c9b709d4fd4771baa6aa9ca3da. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/DEWO61700241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa250e1e0dfbda41149f269bf42c6ee001c574677802755eef2076f8693b79bfb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEWO61700365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e558a9c861fbcf0975e07ae6f6331025a2efb6fdbfb9065e714509466ce893f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEWO61700610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ec647475501fbcd536055541b00c70f8a9194ee8ea878f5c18b9d64c9873ac. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/DEWO61700611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595b7aba3daab53498032819b740ed3e367e38a688c4d338546a6b34a999a77f. 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/DEWO61700612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf07ec1efd8bbdc519cd9da7d312ef4f8775140cea07752b7c0e21ee47464b4b. 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/DEWO61700614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc536a18b39fd868beee73bb8e251599a7f1cd1ebff7b4de02a7a0abd1e9f4131. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/DEWO61700616.
Lass die Band auflösen, aber vorher noch ein Weihnachtsalbum rausbringen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e336e071f19deeb70a5c9e1b0ab6691c161736d7e98d6c8881ef630f9c8f810. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/DEWO61700618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a25747db31921731cae915c01b6622f3de679838134539cc4a6b323f79441d. 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/DEWO61700621.