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 0xd5afafde6fbe088854a12671be0dd9ccc59681743cef2801647718e5546f3af5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d382d1e8-6f35-4512-8d40-dc6f6982d40f.json and https://artists.proofprofile.net/proofs/artist/d382d1e8-6f35-4512-8d40-dc6f6982d40f.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 0x7674718a4dce1d84895b2ca41e858da73e0397bbb21a5a810b3f5dfcb1a7f2ce. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:49:39Z), 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/USCGJ1884318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ff815f46a2d834e8e0d11c52dfa7a991ea3a53bd41400bebcf2809fdcab8ae. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USCGJ1884319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb857da7667530d35c3d13afad0541d913377848b19ac2605e6a68dd0c6946b19. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:29:00Z), 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/USCGJ1884321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac3b5e533c305c850c978144c91e74fed4846f5840fec2042defcbe063018e0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEZ902100726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdba9a034e44dd0db14b0926fe09f0fc1b50a368d3f54ccdedec1adb4418de0. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/DEZ902100729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37270e6197ded644648b1c0b52e86b1ce44ab282782beabd122e6db516f7413c. 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/DEZ902100731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7b133383b0edbf65d8dde82d8acf6bbdc4370136cd8f54becc7cb504d6b333. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEZ902100734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6474c9286d2422b20d3d15d0df3720bfa291ed6a241e721452726e8c3b7080e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEZ902100735.