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 0xaa43b1865b316f77fbfd1ce3f876c4dd2c854afe44fd0ae4aa17b9836c8e1ccf. 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/27310ff4-687a-4169-9fb9-b388c115a310.json and https://artists.proofprofile.net/proofs/artist/27310ff4-687a-4169-9fb9-b388c115a310.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dangerous E.P. (feat. O.B.F & Bim One Production)
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 0x0dbdc0b5b34ddc4265396cdfd6e045bb4e5a01794bd268834302a761baeb6a47. 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/FR2X41666219.
Until the Last Drop - Radikal Guru Remix
Dub to Dub (High Tone Remixed Dub to Dub)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5c4143dac965fc34fb12883d699739462a79e2e97eec9c60337f67049f9949. 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/FR92U1800130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa219d93b55bafbd35b9d04e67d3a18024efdbb1cd8fa3526cc8c4d22989dff56. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR92U1400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d885a52cc2a0d66fbcd5a0f80b38fd488aec40002ae4bb184304942c92c8137. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/CH6541634029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa219d93b55bafbd35b9d04e67d3a18024efdbb1cd8fa3526cc8c4d22989dff56. 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/FR92U1400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c59ab2c418c690da69edb062162302669899c168bc2b873f4c8792a7ac44b2. 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/FR5R00911226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b51aebb34f8509698a422c5b6c20d5e054b061701c82b7c4ff5eb104dedefb9. 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/FR5R00904350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb893281a227fb53010af9fe77eb3351870f52db68e76546ae07f2e8e543c8d7e. 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/FR96X1681040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18169080c0063f31f972dac74cb6254241832e33a6f61b3a8b6fa381abf62d94. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBXWN2300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b5b517726decb0ad570be314512992c191091a400855de4ad3c935f9693d1e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRX201857723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3972f91cd04daaf9f61d195df29267df7e15eb660c920e444b91cf9de57a928. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/FRX201857725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e38fe4958aeb077a390145a9f009374803897e0180c9252d40edb6d1a2d6b3. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/FRX201857730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0058319a63f67bd054c5a76562c46a8b3c0b422dbdad99a4a998922fad68c8ca. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FRX201857731.