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 0xf6e210472b44f1a80f0439b983cc027afd9f4adccde4cab5b3c1c727295f3d9c. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dce5d51a-8202-4265-a28c-8c3234dbf4b2.json and https://artists.proofprofile.net/proofs/artist/dce5d51a-8202-4265-a28c-8c3234dbf4b2.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 0x8291c7a586c752d18d0aaa590596c299861a323f5f4022f092a2348a607437f5. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:34:41Z), 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/ITZ590405506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c17526ff200618780ee56a49f873db16d6892a54033f09f20483780bcefa8c. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/FR6V82572889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfcf9dc85e7635ff33524bec19c6c8c2c2e49eeedfcc400aa08320b1d75ad83a. 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/USA561023473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdb424b0334192b21ca41453d41924f2d84b59d64ca7d010304a3ef9a2afbcb. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/USA561023475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f165956ef92ccc48d5653d2a9a10107ba595f0323069c608c3e3614321af2c2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USA561023477.
La danza del piccolo ragno (feat. Lamberto Probo, Cinzia Marzo, Donatello Pisanello, Giorgio Doveri, Luigi Panico, Silvia Gallone) [Original Soundtrack]