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 0xe4cca38e338578ba8b311c2a01e4d3b35f0fb37be12ee211377dbb537880b8e7. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/968b8af8-7b9f-463e-96aa-75e93515c995.json and https://artists.proofprofile.net/proofs/artist/968b8af8-7b9f-463e-96aa-75e93515c995.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Prologue (feat. Twisted Insane, Iso & C.Ray)
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 0xf855989e4aecbf0cb1386f780847adedf8a6ade1097c4a08f461ba8ee75df6d3. 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/TCACG1580089.
Dusk Till Dawn (feat. Twisted Insane, Kamikazi & C.Ray)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf158205c318336cfb881254d2e925427c95415c0fa8855347be9575ec003fc8e. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/TCACH1582431.
Nightmarez (feat. Kash Peezo, Iso & C.Mob)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0fe1d52010935c82e66e09ccb041f6172bc7379a6c13cd582083cdac647bb2. 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/TCACH1582440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e7417853684750235257a0f3ca20dc3f86a18166c9df4e8f579ebfaa15dae2. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/TCACH1582444.
Here We Come (feat. Twisted Insane, Dikulz, C.Ray & J.Flyer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb035ba7b15168d33945a88873da83cdc53ae2b810230a91734fc8b650037c65. 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/TCACH1582448.
That Loud (feat. Z, Redro Killson, Dikulz & Iso)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b90932e2ffd2a798aeff1cb8e2ada8d18a50d25e1fa6795f58d9dc89ec04de. 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/TCACH1582451.
Better Days (feat. Twisted Insane, C.Ray & MC Skolar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b533e2028f88b7bf5188303150be00332765713267bfedfac3bc0bdbee9b5a. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/TCACH1582459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b58f633feaac8045e183803e3935750e7553fdd7b171a7b723edafa2ccd1b0a. 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/TCAIH2461967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c701f8407b0ed2aa8fc85cce1f0aef76372fe2ed6b94b23d78d95c36f3aa55. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/TCAHU2438393.
Don't Say a Word (feat. C. Ray, King Iso & Twisted Insane)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d163ff5022356293e2c6dcb97275e42bff11fac46e98b2d3ce1165ba4bd9b7. 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/TCACZ1776619.