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 0xbf1f09b06bb341ff6f2ae0d77708a085c660d0136f80a6e3c958fd43ce4d2cb9. 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/2314fad9-fefb-47fc-b9f4-845cf19febec.json and https://artists.proofprofile.net/proofs/artist/2314fad9-fefb-47fc-b9f4-845cf19febec.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 0x4d3a6b9d7fa88608face9eff6b006260b3be5681b4d34b22e0c6b3aea1cacd95. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/DECE72402847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b6b53128120f54c16f93dc91410b6f7b07fcc7bc0ec4def0ee469a193721bd. 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/DECE72402412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b6b53128120f54c16f93dc91410b6f7b07fcc7bc0ec4def0ee469a193721bd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DECE72402412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b6b53128120f54c16f93dc91410b6f7b07fcc7bc0ec4def0ee469a193721bd. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DECE72402412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3a6b9d7fa88608face9eff6b006260b3be5681b4d34b22e0c6b3aea1cacd95. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/DECE72402847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3a6b9d7fa88608face9eff6b006260b3be5681b4d34b22e0c6b3aea1cacd95. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DECE72402847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9904cccc38d6b1fabadbce1dfc6b48e9fd0830555b9320b67a14bafdeb50c384. 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/BK4DA2507875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3a6b9d7fa88608face9eff6b006260b3be5681b4d34b22e0c6b3aea1cacd95. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DECE72402847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80327eeb85469a202a6637ab9e0190bd4f2de7c61665d60347ab8b1f6125ba3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DECE72500271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b6b53128120f54c16f93dc91410b6f7b07fcc7bc0ec4def0ee469a193721bd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DECE72402412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3a6b9d7fa88608face9eff6b006260b3be5681b4d34b22e0c6b3aea1cacd95. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DECE72402847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33957eaaac6aea76c068e9321d858d025745f923d0c7c3a4905a6b3295a356d. 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/BCSOR2500096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b6b53128120f54c16f93dc91410b6f7b07fcc7bc0ec4def0ee469a193721bd. Chain 2 (Bitcoin): anchored in block 956970 (2026-07-07T00:37:51Z), 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/DECE72402412.