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 0x3e8223867b9710ba61f173417e5646816eb13f93f8b72bf6d81fa38da8e772e5. 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/69fcb723-02bd-4434-8d49-1655d978d2f9.json and https://artists.proofprofile.net/proofs/artist/69fcb723-02bd-4434-8d49-1655d978d2f9.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 0xf960f0ae239e8a9e992eea7fe2fb587792f9501cb461fe1f41a69368d8a651b9. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/DEZC62128463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbaee30fa3e973575d00116439659c8836e69e65f5ffdbdbeaad5713720a6b7. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/DEZC62255142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80108436b8bf9fb7483df43d9898f4c2f3011ec6e8bb27143434ad56b53507d3. 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/DEZC62270432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82ba5b062f74359422b4f1ba4c18beffe74b9348409bc6bd2a3fe912a299d14. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:45:23Z), 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/DEZC62285433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc03596f6b13ef452fe4f4351090190f6b8270220a6a72e4f5e64555dca2c107. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:26:05Z), 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/DEZC62345421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b1c00a66177eb585f55c187ec650a50329af7fd33b0b09ce342aa0e2c262f2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEZC62418608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc010e7a55959f3c6a6a5ff322331302c7ac75a3c9377d3d05fb08f421cce97. 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/DEZC62455529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501d53ef50e13da4cd390cd3232b7eb78c2a14826c740bf906b0484e5f2dbb87. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/DEZC62461548.