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 0x8b95bbe9e337a2033e6fd25dde58f8a65dd7be1a713cd3d39dee07eed2c0848a. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/559e0fa8-fdcf-4106-ad71-2c7fa2d9bc37.json and https://artists.proofprofile.net/proofs/artist/559e0fa8-fdcf-4106-ad71-2c7fa2d9bc37.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Flexxin (feat. Gucci Mane, OJ da Juiceman & David Blayne)
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 0xbddf07100149949156824811f282a3fff229f71315ca7b8602a0c20e6aecb048. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZ9EM1790853.
DuFlocka Rant vs. Flocka James (NBA Finals Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbddf07100149949156824811f282a3fff229f71315ca7b8602a0c20e6aecb048. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZ9EM1790853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbddf07100149949156824811f282a3fff229f71315ca7b8602a0c20e6aecb048. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/QZ9EM1790853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a05a5d1c1589a039d7c3b76447fbbc43f4ac17274bdbdd1728c8c6e2d9e129. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZ9EM1701186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbddf07100149949156824811f282a3fff229f71315ca7b8602a0c20e6aecb048. 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/QZ9EM1790853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb327960cef5189bf524ab329a41f9a39e9e23218d41224afea4ad40e5f44ac17. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZ9EM1701988.
Off da Chain (feat. David Blayne & Suga Shane)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac2a9d085fa914c11657544665e3038920c865d443e8790191ebf8ee984d35d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZ9EM1701994.