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 0x351a43185e84ea270bb48314b8abbeb85c9f23acc80d70b7838f13159fcad3df. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/80e5dc64-023c-4630-b1db-636cedc841a2.json and https://artists.proofprofile.net/proofs/artist/80e5dc64-023c-4630-b1db-636cedc841a2.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 0xaae4d00af5fbd4a37b6d584ec69af1a150a6b9ca5aca9b5ba5707f0d3e1e77ef. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCJPX2316804.
BUDY BYE (feat. U THE STARR, Ras LIBERAL, KITSUNE, IRIE-T & Dee Harts)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa79bdb4d594e6fcb6b28eb754caab745f35f7eb25ff512ad5f766342398662. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/TCJPA2461420.
SYOUKATAI (feat. TEN'S UNIQUE, SOMAJI, Ras LIBERAL, Youtarow, U THE STARR & KAYA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66504fb2ad7bfbaf8ffaa8fc122e85ae049f04c7d750bf65768619d0e0bb74a2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPA2461421.
SYUGYO (feat. U THE STARR, IRIE-T, TEN'S UNIQUE, KITSUNE & DIFFICL-T)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1ab7b585682e18d9b9330845cf0b66c75661f5a82d5f44015a469718b88c96. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:17:50Z), 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/TCJPA2461423.
CONCRETE JUNGLE (feat. BEAR.B, U THE STARR, SOMAJI, J.D.B, KAYA, TAKUWAN & Ras LIBERAL)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e363c2819e2217cd83007da113509b721af58854f46be8ed855f61645dd5d1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCJPA2461455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd0990a02d2f28d60ec7a2883d5524ba831c1291fd235c1245fe678976dd8c3. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCJPA2461479.