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 0xaba20dcaa927683567f000f246c60b55dafe8f27a9e671d7f90c4676f4269622. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d0e0896d-8b86-4235-9dfb-73d44413c2c7.json and https://artists.proofprofile.net/proofs/artist/d0e0896d-8b86-4235-9dfb-73d44413c2c7.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 0xbcbaf49539e4a56b8b377902031503a1e34bd300d40b6c945f368c30d29b3c80. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/ESA081800055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775d73552fc3829058b8df5d3575d03c65454f07636d04183abaa72efbaa6941. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:29:14Z), 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/ESA082402713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa902e10950ac27c46c4b7b3c8d6b91e357195c8e4417b66c95032ba8aa23ad37. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:17:55Z), 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/ESA082402711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c0161d4f02ab530ba4a46c6b282a276a79f82b9bd983f02ea396ba0e035db6. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/ESA082402714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8191cea72915914c0b08ddea07d96de2f28ac77dfed2ffea34faf30758f81d8c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ESA082402715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4084d3d96851757b04b08e649c797f0ef97f9536b626d32cabd3de15db6de16f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ESA082402716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21ef43602d9f3e0a15a0826e7b6bd6296d0990d01fd63a83c9d0b5aa7e9b239. 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/ESA082402712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae03454b4c1536f63994c8957e1b5a2a971df934c0c1829404a5a4bcbb79f2a. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:02:29Z), 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/ESA082402718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5be84c707ca3020689ac1fad881a94077d1bddf9ad81ab23f09b40fbb0c2fc. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ESA082402722.