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 0x348dcb4decc3274b710299483b2e7b639f6d2dd646a2af7a4c377d84a4913145. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/68507c00-0d4c-427e-874d-567428fd54bf.json and https://artists.proofprofile.net/proofs/artist/68507c00-0d4c-427e-874d-567428fd54bf.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 0x78ee0e9537bee8651ce03f4f98fd55c67cb54cccabc4d3195d81a6e4d8befdf6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NOUM72300111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b97a703a25d9f11c94ac387e68f1b105ad60aa42a250531a804e21d300f4c6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NOUM72300370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09b4be433da3b81783722e7569c7db8f9c9e0603993e9df5cf57f7d0457afff. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NOUM72300393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf308768e02cff69832776a6c3979014f9b445cb06dbbd3eb8b1acfeed9d90582. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE6QU2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e99d90328e10f3f0d2fe4401916ab60c8c9391e8992386f422c44e78d20004. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE6QU2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ac4e944cf8a41f134bc0738880b0232a876c7ca599f9809cdbc4c4ef9571c7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE6QU2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd689002a9e9ca489e596c292c3b8eebbe2b7287c7bea5240c5bf0ab56f892b5c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NOUM72300174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b5dafdd0233f34ae5245150c4dc80d75b7e55291fe1ba62837c8b57802d8b6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NO2DY2300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702e18ca29eae593c6b1b5811b494209623bf3a3be895d01396a91c5c0056abe. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NO2DY2300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaaa9d347814b2491dcf44ec504d64e3228bc450c8e9bb05412ba222418a1504. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NOUM72200398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8bbe08f81efec1d5c9838490b0c23a894f30f8a4b93d3d0d735ea6498eac13. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE6XW2182024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7b59ab00f30a7655c1cc2b8c8fc287e30567579d0974c6fa151b803f81d67b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE6TI2334489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a4475843925459aa7b84611694a46e05ea5ca4b30162b4dcee70b856d9e988. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE5XG2501125.