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 0x88d3aa32d418e28b5348995e78d938fdaaceca93c50070702a22bb297632ee34. 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/5fe0b644-445f-4e0f-b74f-761d6e39d408.json and https://artists.proofprofile.net/proofs/artist/5fe0b644-445f-4e0f-b74f-761d6e39d408.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 0x7048d447efb793024018b4afa1216330161b574ff2a9bad1a0d7fe46329f6223. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CH6542119557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601f7516952f896458709f7700e6ddf47d5148c30eeed6e03dbf0869cad9ca58. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QM6MZ2115203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a215d4a2f44317f783a8f007641e1e1bfc8be145b90fc6453fba3c66a20ede. 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/QZNWQ2137066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c36696a4e760fadd5e3f0a5035ecdbd01be6390615292fa244272952917b992. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZFYX2220167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6e347390a8b8d1a473c03d106d57cb481d4595ea5e250640a5ec358716cfe5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZDA72201238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30c3953c407bd2052bea41497a475401389b6847dec868b3172d391d8a11ac4. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/NL2QC2100563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c9e00e9c00d12fd0e26bc2e17cbbe97720729894b5723c424a5e4cde5c93dd. 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/QZK6F2220075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a4f92a9c87f9acef9c58b116457fc35034220dcc5136cc2f7fe582627b818e. 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/NLX3Y2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c238682cfbe717ad31c98f607b8f8fa257dfe186feb349432b7043201628245. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/FR9Z62400461.
Drowning (feat. LU) - HYPAUX & Spijk Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8c5e0cafe43d55be251c682dda613ade974bc9457c505b5e9546ba3983b904. 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/NLX3Y2300012.
Driving Home For Christmas (feat. Olly Davies) - TCM Hardstyle Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6adcb47fad6bf772b1529e8e03fea5afc8d0f9d6520a3f371bc7c30c62eee2e3. 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/US38Y2310095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b9b27fe52e4fff785fe035377b7ecd0859cefb0aa22950b2508ffe5900a089. 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/QZTAX2260894.
Driving Home for Christmas (feat. Olly Davies) - Bastyan x Kayote Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9db58a128ea9a008fb973b1610c2ed59eae8c5ba8c17cc4c3735c9afc634e6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTAX2260896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6adcb47fad6bf772b1529e8e03fea5afc8d0f9d6520a3f371bc7c30c62eee2e3. 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/US38Y2310095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6adcb47fad6bf772b1529e8e03fea5afc8d0f9d6520a3f371bc7c30c62eee2e3. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/US38Y2310095.