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 0xce628f109024c67687322c3921c9b250be2896868d17f9cb6cacbea730c87d62. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c1b83b4-508f-4cc7-bf3e-92d5a44f1b00.json and https://artists.proofprofile.net/proofs/artist/9c1b83b4-508f-4cc7-bf3e-92d5a44f1b00.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 0xf4c4334cd5247f4d08512ae92ddd7b1716e6171f00481b598c1afb1068c9ff15. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GBSMU3074750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a61ac2c6733a2d6d490ff8a4513843f92eac9e317b25618669d991e1f88499c. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GBSMU3074751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef57a20d1679a5dfcc5fd61b09a315876d07c3e94eefce6e41e5d1c4d5cf662. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBSMU3074752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4667db82bf735f2e43707ce442def303be46c4e8c959c319385f58b3fae51ea. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:00:20Z), 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/GBDHC1804301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85124e005479b9d1615bbc20ffe8b2c8052c6ad4656c9af74ec9f57ac5ec66c. 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/GBSMU8747421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e8d3ac8dcea685e195d16204610d3ac84e42590a14aa6b0961b920dc2f5b23. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:49:56Z), 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/GX3HH2213306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e600b516227c92f7108c2a8703457858875c26fb61851d4e2f3eca86b17aa18. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GX3HH2213309.
Rats gorged the Moon...and all fell silent.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ce84e58ed940f0eadcc51ac61a50e680d48da57a58eb601ba789f3fbfc9477. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GX3HH2213310.
Forget Everything And Remember - The Lost And Obscure
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2524ab6e60da6b4e68c61d5d93fa0f8033e34ebed705aff31916eccc349be7. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GX8KD2260955.