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 0x4894cf6efb582fb1c572b7ff4e9133f5eeba7378bc776592d79d2ea8caa2aa74. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c13c833c-0547-4f18-bc57-b76fcaba130b.json and https://artists.proofprofile.net/proofs/artist/c13c833c-0547-4f18-bc57-b76fcaba130b.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 0x8ecf5661f9514bf5948009fa21d36a554e62c40da186d0e03e97e022bdc09dfa. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:54:42Z), 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/USDY42201906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5039ca8895c738df98f5192f9bdb33ed24d70a92772c2ab45605bb01e116211. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:30:53Z), 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/USDY42201908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4624da1f7b1a416488589d9c785a4f5c07251f14d731c7919f100cb1fb12c4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USDY42201909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4d721712e02e8864ff91cd8ebe3d762d548486687facd4122eefedad3a5072. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USDY42201910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0084662bf03aea6ca3e707929d497d761cdf5198da87f9ffc342f960979d1d52. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USDY42201911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca11dc54c59ae486aa2a96520f335db70bfea218dd3f805c167666b31a85695. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/USDY42201912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fc0da2bd3506499ef3c52f5a1646faa9ffebdf73e3187e8bfd8570c5448751. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:01:47Z), 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/USDY42201913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04d8c3fb385e2e31142da0e4d6153dd86a75d9b81ed0910e9f691a42fc731b7. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:04:00Z), 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/USDY42201914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cc0e9a7cd4384b5e5003843ca89059fba40053783767f9db4e46b863d61fc4. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/USDY42201915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a5881a81fcdb983261ce1c5c1456793694d30241caf0c8d0547e9afc2033d2. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/USDY42201916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115fb0b703f526873a288a20f826fb073cbbe6d376ee5dc851a3112cc84fea08. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USDY42201917.