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 0x3b7455913fbb6237f7fa718bcd4a371da1d28777d128e09c9d9ee59999f75e2c. 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/6a97fd9f-35c0-40ca-b8cf-1e7e3c6b01de.json and https://artists.proofprofile.net/proofs/artist/6a97fd9f-35c0-40ca-b8cf-1e7e3c6b01de.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 0x65942f39489ae7fab6381f197c9664894426288ceb7494d788c389620ce729cf. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:35:17Z), 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/DEZZ42190021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0a6c69d5413e1334b3b699c6ddec2921194fc142b86893d96368fd75f2ff16. 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/DEZZ42190022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89433bc016b06bbfd493d57dffda45ed09b53991cd22396b6c0eb5fbb92b82b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEZZ42190023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936e9efa95e0a53fca8a0c6f33815f3fc24dc979aa5da4a1072ec0c201ff1be9. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/DEZZ42190024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503e714da5cd5a6d03819b0ffb5ecb5103cbc293575ce2ef380a7f8b760cfe6d. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DEZZ42190025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa394695a775116ad380338bb1b3ada18e51c8518ceec684b6e636a8aeed2b9dd. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:03:58Z), 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/DEZZ42190026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6cff5f5bc9faa16b788e3c89cee4942395a35aede7e274e2e82350c5887ca0b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEZZ42190027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e6f0e602dfce58895eb7d120739652d43dfc3fd121a2d327b62a3d5ae10e36. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEZZ42190028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a128d5a0e4d5f656491f11d5645fa6367ed1ae05904315f5c6f27fb3b0e4775. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEZZ42190029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6879161d747e12853b47515c60f717a1e9d3417575c6defbafe2912d22e36da. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:51:29Z), 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/DEZZ42191106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd07d8040babb7316f71f44ffe9991a20a971ffb923080a949a96ddc31f0874b. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/DEZZ42191107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73f4cfe9299db046c9116e18772c907d43e155e2b1b6d13695843021f998b96. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:18:30Z), 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/DEZZ42191108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a708155c2dfbf9f8310baaa965dfb8be834f91417e14090403cc0815fab37c3. 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/DEZZ42191109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2affe28ebc066ad144dee7782e86dd852b7486e49525d1c65303c024756894. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/DEZZ42191110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60618ad23bf9ed044ae8919ceb59cf72d175320553155dbe0e90783016f4c2f. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/DEZZ42191111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41547953761823dfe7723183c43f018f7db506a1005fa309c696d57ec3d6603f. 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/DEZZ42191112.