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 0xdd16baf8db1c0a5a4b5b288dcfdc424f3db34040544caa54cd8cb6179f2bb00d. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b62d9645-1ad8-426d-8340-ad4377222333.json and https://artists.proofprofile.net/proofs/artist/b62d9645-1ad8-426d-8340-ad4377222333.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0407f0c8666e035a44c8dafe28f13705805047bf4dd9313b6c55e682c6c387b6. 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/NLC731800501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8cf53fdf7c42291d142a27b02bc868d8350564e681e531ac8810bdd5f20a3b7. 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/NLC731900370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49821a280a20aca4d570377e6aff2762086cf583d77821ab97b5ffe3058bf738. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/NLC732200376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab0743c4b0df11ba0b1a9d59260e1a7ed0bcc71badee1f770583cf8f73bade5. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:52:53Z), 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/NLC732200551.
Digitally Enhanced Volume Seven, Mixed by Farius and Elevven
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07320df90b06406141cc4d5c70c6929e9cba8ff1196755bf91a02ed45c13e58e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKQU2254757.
Diamond Dancing Sea - Katrin's World Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69cfdccb1c5a2b2fc562e28490093650999612797ab17ebc8c98f8461505a961. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLC731900585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca6f84882b3a0e233636e0008b68f7e5372fc1de090edbc6fdfc41c10e45a3c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLC731900458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69cfdccb1c5a2b2fc562e28490093650999612797ab17ebc8c98f8461505a961. 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/NLC731900585.