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 0x3501b1c045e880eaa61cb20bd7ede04023c20761aad6ae02f9148952e2d4639e. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b3959643-0b3d-448c-9ae1-6ac7e2aa681f.json and https://artists.proofprofile.net/proofs/artist/b3959643-0b3d-448c-9ae1-6ac7e2aa681f.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 0xd9984bd1645a120fdae12fd3f6e242ecdf92623949b4f98285622e14f0b1195b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GBLFP2559014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062b2220aca8791649089e6da8220d5e9c2ca202382fd4fc8ae1842d7ea977ef. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/GBLFP2559015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7891a22206ad215a2204acefdad35b2d077c62c66cc569c3650fffa4257e88c. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:50:56Z), 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/GBLFP2559016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082a608c02e7a016c50e8ee7e05e7264b3b54d1774d6fb033c74df9091ce3f2b. 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/GBLFP2559017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd542a12f448c9b73e5fffafacd51e9b406b4e2034e2db15e36c5d65661c527b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:05:26Z), 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/GBLFP2559018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2b512328ebc4e38a337a771f85b45b704dbd3f2808d500b5cb66af8467c965. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBLFP2559019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70680800fd165706db4588c88ab6d6dad09505ab90f41a70eef421985b107ba3. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:01:38Z), 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/GBLFP2559020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9f2916d04c77a5c49dde012614eb4ae5560739ddc2172c286c2b72e05092eb. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:06:14Z), 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/GBLFP2559021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3bb73d3ecb7edaf35c82eb635359aed194429e5cc1edb123431bb707bd9d35. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:10:41Z), 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/GBLFP2559022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd938cc013ab07d2b5b0f39d5aad9f193831bb43e45774f4d99c2c657a4f24374. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/GBLFP2559023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84749b9bdae1cca66f467ba4656994b21a8b7e16663eabf4e9d0c1fdd559a367. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:06:53Z), 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/GBLFP2559024.