thumb|200px|A four-leaf clover, a rare variant of the shamrock, is often considered to bestow good luck. Luck is a phenomenon or belief that humans may associate with experiencing improbable events,
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 0x21728ba1e00291f6a6bfede1d2f9d99973d1b2b4a31352565b25d80e9bc889df. 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/d8d1aa36-b9c1-440a-95ec-c29c1943afaf.json and https://artists.proofprofile.net/proofs/artist/d8d1aa36-b9c1-440a-95ec-c29c1943afaf.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 0xf6c749bfb090561b6636850d338e319df8f97186407da05039db8be584770538. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US38Y2310921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8312a39d98fcd2461f1a1f4c4def3a24c5dc58bf95e702f2c1bf56aa5ab07d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US39N2304785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35dfb3fa9472a294abd46546845d3d7be75a95199ab4c45d8401f6a1bdb93a9c. 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/US39N2202731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce5894cbbb26fb667478215c1278c6da16986e29265e97a1acae376c39d4901. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CAN132200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6126e27e8d1ea2d835af8d1ee34d8d36236096f56d1ab3673e1e4e21f9235866. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CAN132200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6664ef902206914fcf3a183c773b813f1e44b349cdae3cc11fbff4f90ed721d. 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/ZZOPM2113519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef53a258b8e273561538bd2d861c4feb1beb1702a2b1a931802bb068711ee892. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:06:39Z), 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/ZZOPM2220536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6664ef902206914fcf3a183c773b813f1e44b349cdae3cc11fbff4f90ed721d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ZZOPM2113519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d6256e022b9b3a52d0b72abc302183c756137ee2ca266fb2cf0492e87c0223. 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/QM24S2004259.