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 0xe8301e9fc09bb6970a690f59f116cf3f657de267735b1b76db5276c122437676. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ba79d295-df4c-42ac-9c4c-088d62f24dc0.json and https://artists.proofprofile.net/proofs/artist/ba79d295-df4c-42ac-9c4c-088d62f24dc0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Maria Magdalena - Her Soundful Love Essence
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 0x420d2e5b79a5ca04d73ea9c1eda086eb9465eef7831cf6ab3d8e8acb580953dc. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/DEZC62216480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23533f22406b19fd82ffc4f90725b9307b05a85e5dbfc9f4ce5e97ef606cb245. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T03:51:55Z), 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/DEZC62354651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99454d3b97e27481a06e1773ca39a87f6b11bab9545d3938d1ded693cc8737ef. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:02:38Z), 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/DEZC62493381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d3e4a2804776846fc5697e64e628f33eaacbc160fa0781867d01b4aedcd824. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DEZC62439437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d48cd0fe34ba7cbbf3496c980ba5736811af4d2cfcb2f699b1e3daa008288d6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEZC62469518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb93309b768772282ed5747deac6f55440677018aa191fb28670d15e59ffc6a. 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/DEZC62590075.