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 0xc1a6f7fbe2550885e0c7bfd1b495a168c0d74d01e26009311b5f4f129f3ac5a3. 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/6ed46722-1a0e-4450-ab29-90a214857ce0.json and https://artists.proofprofile.net/proofs/artist/6ed46722-1a0e-4450-ab29-90a214857ce0.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 0xfaa184be9028804cac3e51aa19205df60e3df96484c7753dcbecb1dc30613b15. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/SE3GO1200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb114e8705ecc1d5d474923ee36c0503b97d308b6038cb08ca6079d5729877b. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:04:47Z), 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/SE3GO1200103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea8c3dba66ab719945495f36ad1af6b007b717afc40976aeea4f75b3291524b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE3GO1300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4fcc68dc64233eda18650483f2d5805a725ad5efb713cb2a7764459f4f1dc3. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:00:31Z), 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/SEVJH1708701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402f25800c1810309040adbbed91bfa950197d99a9171d5622c5c48b3e5de92f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:09:18Z), 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/SE6A91908303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1834c8595b674daa4123874dda8e7e2a942fcee2be8960c96505da698a7e73d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEYOK1420546.
Hemmaplan (feat. Alpis, DaCosta & DC Grimsta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849edf566a5d54fb3309aa499fbdc59b3083903d69efd8840d902e119b6f0ee3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SEYOK1301365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46d321bcf1da2b28664223512e9302efeceaafb62de29634c28ccf5c91d0bba. 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/SEXVP1420102.