1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xc70fc0489535a45ba0b91c3121b29436027f32661f4890e013429f8abf5f6098. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6308cbf6-2d3e-4222-ba78-11edb2eb6ec0.json and https://artists.proofprofile.net/proofs/artist/6308cbf6-2d3e-4222-ba78-11edb2eb6ec0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lasting Impressions II: The Impressionable
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 → block OTSBitcoinBlock must exist at that height 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 0x1266808747a107ae927d552428109b673b65d4f28c07c59eb5c5d4f8ce2987d8. 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/TCAHQ2375827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b494aafe46e45d972855e33bca344f74e9c46bad0274a37c11b29c205d9bd4. 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/USLD90809829.
Face The Consequences (feat. DJ Grazzhoppa)
Definition Of A Real Emcee (feat. DJ Grazzhoppa)
Mind Stays Keen (Rough Cassette Tribute)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83b13fe7b8a403ecee6aed069104a3c1d3e8681d85af3175d158fbb9afd1456. 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/USHM21645203.
Nothin' New Under the Sun (feat. Umang & Dreamtek)
Powerful Mindz (feat. Tony Patagonia, Dreamtek & DJ Grazzhoppa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaad5486d880768dc6a02544ed94654633a5a2f713006ce55c7c91d6f5872b0f. 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/USCGJ1997220.
Rites of Passage (feat. Doomsday & Dreamtek)