1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x64177412a75e6600b609166067e028e978b31b9ac886fdb5b613356d78c40604. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d93292a2-a006-47a2-b1e1-9b18afd2a2b5.json and https://artists.proofprofile.net/proofs/artist/d93292a2-a006-47a2-b1e1-9b18afd2a2b5.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 → block OTSBitcoinBlock must exist at that height 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 0xfda6868f57370db93439aec57047a7b3b7eda59b0b69d6a8a6581142067cc5f4. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/ATDY91800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a4b38cd539df2b5d70cf12c8301fab8ad61647245d8c74fe3cf1cf8f06ac71. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:23:11Z), 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/ATDY91800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f01e7e8c157c14899dbf21c79cb26ec1c9d5d978cd4607c3a2f22a7e5c8a302. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ATDY91800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1c6e0eb61dfcc649da433c9afffb030176eb5c001594bd6759bf27087de1ea. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/ATDY92000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d8b59f67e7fdcd683d3f1dc9de8314c2e9977e2454ae84e1bf32b2e8b0ba8f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ATDY92000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e94c58366a3b787791014be920ef322a4bf49077a25c09f7fe6f3f99087dd0. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/ATDY92300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1912426a463062220ffbb8e83d1808a3a903eb76defe63e6791254914871cd7a. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/ATDY92300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f141e66da643d103ca1bc63dbee8e1e5565afe97b22df6d6e317a07dc24c80. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:28:37Z), 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/ATDY92300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7741e35b8d2e3620ba94c055f701756f701d9816dbf9f25c2d68684cd898699. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/ATDY92300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe722a33f6045884a806e203ecee994dbf3b8cad962833ce2906b26c8264b8c84. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ATDY92300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f1819dee8463d4725902167a5376246c05eba5273463b4df20b49201e69985. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ATDY92300009.