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 0x8ed7813894eac0158caf29317a757ec3bcb608ea9f5764103f2538ed595b06e0. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/95221c45-74ac-46db-949d-496ed7af7f1c.json and https://artists.proofprofile.net/proofs/artist/95221c45-74ac-46db-949d-496ed7af7f1c.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 0xb358315a461f7759ae0a232738b0929952dd65d564d3400adc1b0d079a4e9ae1. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCACS1659369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28e307297376a605c3164bbbbe32b61678bbbb622ddc575e118aa587852543b. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:28:38Z), 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/SE5BU1850976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e269411196ddffaa98f881ed2de88337ddc1e85627848d90ec23a7669d30ac. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:50:16Z), 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/TCADY1801046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5deefa0f74126a15b9a56d9f6885b859b26c95c6a84d916cee83e6ca310df0. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/TCAFC2035491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13aa6e5f553f96a79dffa0baef0a5996b0ae87bbd7efbee522d665869e5ac461. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM4TX2363906.
Don't Have The Words (To Say I Love You)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef94d2c70ff7eb4bcd54b3c2e8a3afe4a1f33b87809e4856859012661ef90f09. 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/NL2VN2300037.