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 0x30b8716001a934a08ee32e03f99e2c6271ad84b4a0fcd92317cd5a65514aeb58. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d0bfa38-046e-4ef6-b956-49d15806de25.json and https://artists.proofprofile.net/proofs/artist/9d0bfa38-046e-4ef6-b956-49d15806de25.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 0x3ce5968d8e2a5bfdad3939fce9ce47cd0f63a728ad7daca04aee90e4e749bb88. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCJPK2028220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce5968d8e2a5bfdad3939fce9ce47cd0f63a728ad7daca04aee90e4e749bb88. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:37:11Z), 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/TCJPK2028220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1af3017fe9266afb89322a1a93f59b724b03a2eddef7740f6062395b924776c. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/QZTAY2345421.
Clan's Rule (feat. CK the Shake, J'Da Skit, NF Zessho, JIVA Nel MONDO, Active, Mid-S, KECHA, Sakai, Yoshinuma, youheyhey, OK da Computer & DJ LICK)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8e94b1dfe9de57e5eb5e2a02409aec0444d3b4acaef842de064d2c19d9306c. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/TCJPS2289940.
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
Desert Dust (feat. Mid-S, NF Zessho & Sakai)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be75cfaf09165781144a3305f5e8fe701319a442c092b43bac86379b8c54ea4. 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/TCJPS2289971.
Gradation (feat. NF Zessho, CK the Shake, Mid-S & Sakai)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619c70b268d028a23b3ac10a99f01e20e6ea181e922595e4274a6423195442ab. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/TCJPS2289975.
MechaGodzilla (feat. NF Zessho, Mid-S, YNZ Bounce & CK the Shake)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5759bce3b46156ea9dc354d13d0e22815d8a2c39dcabb42dad733ba612380d60. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/TCJPD2563762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d80844b4282cffa296b4676d39fc852517483f05d08488c73b55edf9748f501. 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/QZTAY2345420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44f1cf4c82065508a589b8a1a0a6e09e7a9b08e8819fb0fb9b2448758978905. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/TCJPO2164176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2403c0ce81312f031f1c1f5553cdc5a4b2fd76f425c3a0a6b3602ef431b9a3. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/TCJPJ1906296.