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 0x5bf394e676cd5ffeeed32af91f1868fc15552d127869235896ea5fd299ad3e22. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d24008b2-95ff-49ac-ac65-74363078cda6.json and https://artists.proofprofile.net/proofs/artist/d24008b2-95ff-49ac-ac65-74363078cda6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Throw Up The 4 (feat. Pistol Cee & Redrum)
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 0x1a146b008cd99787e5fa65036e7d20aabeea6d3bf5a616a143c2774493cc2be2. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:23:48Z), 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/US77A0900079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f03945bcdf1e3d47972ec68232a8f46fa51bae4368c854b6db51a7de32aac8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USBAE1300010.
Niner Gang (feat. Gilly Loco, Lil Toro, Big Loco, Yantz, Doc 9, C Locs, Young Tank, Thre4t, Dro Hunnid & Chente Corleone)
Dont Go There (feat. Big Rome & Big Loco)
My Flag (feat. Gilly Loco, Baby Loco & Young Spitz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a834509d4f06113635f10e648a471404a5d8fb9457d5a8fad1c2db54a0ffaf7. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USHM91653702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaecb4ad0e68481a948bd1930ea664afc90457810205f25787453dc31ccb862b0. 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/USBAE0702786.
Big Bad Norte (feat. Big Oso Loc, Loc Neezy & Pean)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2138f26906e29dda834c263947d3e7bdaa3956ee3f5f051c8dc0578a89294aab. 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/US77A0900060.
Big Northern California (feat. Big Oso Loc)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fce43e6a2cca4305df27c5e5be787906c169c5000338bde761bd01ccac1bd6f. 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/US77A0900061.
Woodie & East Co. Co. Records Presents Northern Expozure 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5faefc7159c63631df6c80e9de39be16062c10473d74786055bf3f9ba2eb198. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/US7760500047.
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