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 0x073b7201afa7dcf55fba86c72c73fae22ec34a26a8e09555ba78c162ca1bec5e. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d10a075f-82fb-4134-81ea-7c3ab312e248.json and https://artists.proofprofile.net/proofs/artist/d10a075f-82fb-4134-81ea-7c3ab312e248.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 0x84a75097a942571324db312b3ce1f0b0a59f4dc6c9118db156cd68edf459c6c1. 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/USCGH2137655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abd3a7b8898a003cc7b5a1706a6bd038249517ba4792b24dfdf692d5f76f82a. 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/USCGH2202718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dee17832bde43d81897266d0ef437ed74d6871088b21675feb181ae1f1c2d20. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-17T04:50:51Z), 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/USCGH2348867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fbf126a3e4211274f1444cb72ce51394041e875934c73368a3ab9c91b2fbf2. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:36:45Z), 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/GBMJG2333101.
Clearance ('S Cac a bhith nam Albannach)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb425a08c4fab395f7fb7b8515c06a65bd4d880d7054a24cee6cf7640bbb9e2. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:30:56Z), 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/GBMJG2412164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc001d0fdcdbe6c2b0fb24df7875774707d4ed09fa27a1512fe37b2388e8f2aca. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:18:21Z), 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/GBMJG2416467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eff5ccfb3429263d2ae2c5bfd79a17023a3ca9aa11d1a10e5964e17f972342c. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/GBMJG2430379.