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 0xe42618a27e804674c6097c7f61cbdfaf557880dae51ed3420f4789a3fa69336f. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c29f0641-01bf-4582-b014-e8ca030b813b.json and https://artists.proofprofile.net/proofs/artist/c29f0641-01bf-4582-b014-e8ca030b813b.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 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 0xd9293c8c715108b243142bd1a0f92ee92e5e2d3b26f6332fdd4127a37d45dc97. 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/TCAHT2499962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4ba4bb22202c7251a2cecc71a1c25d600e2c33de7795d3a59fd481c7a4fa21. 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/USXQS1513270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ce07b94d088b4409b497dd6d96ef6a753b578fa3286e994f03de2e714f9b6b. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/USXQS1513272.
What Up feat. Slim Thug, Dre Day, & J-Dawg
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd98acfa5eb9fbc08c319accf1e170f515b42e7dadcf1abaa96a93588add534e. 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/USKO11100892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6541311c72ff99e288c5b883ba71762204a19ee2d0a0c3ae38b14af642c2cc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USKO11100893.
Top Of The World feat. Le$, Slim Thug, Dre Day, & J-Dawg
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ddcb953e285cd7d2987103c03f888ae6e089b02d12e6944001944672f850afa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKO11100894.
Shut Yo Hood Down feat. Le$, Dre Day, & Slim Thug
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882d77329ff4dec26fef68ecae493d90f88b7b033314df62e8f279d8ac734217. 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/USKO11100899.
If I Don't feat. Dre Day, Slim Thug, & J-Dawg
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43b48501f2fb282c4d1d479d7857a16b35aa00fad1df1471db1f53e4aa7a5f8. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USKO11100900.
F#%king This Game Up feat. Slim Thug, Mug, Le$, & Dre Day
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fb59dae8b16db894ff499be66db0f858c465ccd403860a1f7bfba5426fd0c7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKO11100903.
Hogglife feat. Slim Thug, Dre Day, Blk, Mug, & Le$
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5ed9acdd5e5584bed50933ee5741fcd062d113e762f76784b91cbcecc6069c. 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/USKO11100904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b0cd787d36cf4471017ebeeee52395ece2bd25bb184b2b15ae4b89fc5bfd85. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USKO11100906.
Listen (feat. Killa Kyleon, Chris Ward & Dre Day)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f7d15689ceb82a54488ce15bb477a0e9c040184bfe29f3f1e8a6bd7ff69e6c. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/USXQS1407696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743989742440c5dbd2ab7043695d5fae4a38c9f5b22062f1f8047d0f5526ba37. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/USXQS1512942.