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 0x72af1c5580b8bd2c7328bdb78e7b39207d4d1c585e7d5950cadad531fd004b77. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43097a50-4f83-4868-ae88-e800ae38de07.json and https://artists.proofprofile.net/proofs/artist/43097a50-4f83-4868-ae88-e800ae38de07.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Do Voodoo - Arrangend by Dubblestandart & Robo Bass Hifi
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 0x38cdc37ef4f4c79abc1d6ebd69037692b906ac6215ec71e2ac4261922052f170. 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/DEH261410508.
Chase the Devil - Arrangend by Dubblestandart & Robo Bass Hifi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40efd3d9f648897f0a71b0d12cdde67c4561f8f744f269f4ef6998bb32039c6f. 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/DEH261410501.
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
Blackboard Jungle - Arrangend by Dubblestandart & Robo Bass Hifi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416e50aef86cac72ba023ba7d4306e37388c84c83fce5af79517d78efdebc49a. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEH261410503.
Fungus Rock - Arrangend by Dubblestandart & Robo Bass Hifi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408591e6acb857faa3c11efa48465d3beeb8fbf2c92ffb3d811676f16e0027d9. 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/DEH261410504.
I Foo China - Arrangend by Dubblestandart & Robo Bass Hifi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf2757c332fceb751b6ab3ef8233ef52fada87e36d07a59d57e261a5c0c4186. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEH261410505.
Chrome Optimism - Arrangend by Dubblestandart & Robo Bass Hifi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3017c90f1dae00a83b8c1cda9faddbbacbc2e9bd6e93a8923f1fc627ba20b5a9. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEH261410507.
Island Girl - Arrangend by Dubblestandart & Robo Bass Hifi Defending Rights & Justice Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588ef21678447180e4188790d18feb3a23ad372dce39015a69e2520ee9cc4832. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/DEH261410509.