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 0x99180bde11bb82701efe7d16ead5848e935a46886a6545b014c970e7f64dd03e. 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/bb2c1453-3a15-4966-b331-3c5f7a583792.json and https://artists.proofprofile.net/proofs/artist/bb2c1453-3a15-4966-b331-3c5f7a583792.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Freitag, Samstag - Harris & Ford Hardstyle Remix
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 0x93d0eb558fc079593acd72c24486df36bd727368b05251190f5475632ba3ada7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEN061901235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9c346dc694c7dc1bb41ebba6f3370de735f09d7fba6435c952d9dd8c02691c. 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/DEN061901436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94994c161437ab8495a1f4ed24471d46dfcf4b657b44b9fe9672454855c9ed2. 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/DEN061901237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25321000878c7be6eabe991dd62b2efefa29e36fd9c050752f8535f41e26aa84. 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/DEN061901238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb295ad37bff80e7386d65b6010c034b16fd2be0f8200adf5ef0f36d04081f75. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEN061900543.
Freitag, Samstag - Harris & Ford Hardstyle Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd736b53abefb02311a11c36d303d4c5d73cc83b4f5e2a5cb33702f29b68132. 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/DEN061901239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1c5b5ca25f3dd7e1e1e4703289d3da5d90495b02e98f18b432324fc8bd8f1b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEE862201132.
Different for Us - Eastblock Bitches x Ostblockschlampen Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bd9dbb60f6cb8b916010532f6cf5a2bc0cd6638e13508d90f33f0807c47249. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T23:11:55Z), 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/DEE861902875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c75e0cc2cff4aba410bf9de85c03a485e7b78fea8ad2c67264fc1791045343d. 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/DEN062201226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b0f25e38a7d51ffe3a10df82342fa1220473de7889df9a48d6f5ab3e04a5d6. 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/DEE861904427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d039b70bc2834345addcff5115b2a74669ab2df53914278e4677a71c174763. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEPI82448897.