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 0x702fae3d51efc406ec33f5dd6e10c8524dd4f970e9a3019db18d61f09b15073f. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/632327d2-44d2-4bd7-a965-d86055886218.json and https://artists.proofprofile.net/proofs/artist/632327d2-44d2-4bd7-a965-d86055886218.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 0x110f03af0cc1637abbe5f5ee85bfeb025860c728f3cbd9f05d2a61bc7e157ac6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DKUM72100268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092e5d7592728c89db79efc823f739f9d455952e3c1b4bbb0e77e1d683e17796. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DKM932300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523343a500c769340543db77c747a43a184f227d0a26e18aae10af37413bc06b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DKM932300901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab5a0d80352097c17359d59e2cce950b03a79d90f62fdc001913ab54855ee16. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DKM932100401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c55e759d4bf2be78de1fe146b56e3143e569d1fc3e6f5cf861ab327de57907a. 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/DKM932100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fde1a593b286032f0de89a0a768417daebb1ae9f48eb650c52663c246d81c0b. 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/DKM932000501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832718ef216661a4ac44523d4bda1a500baf8d4958e5c60e594e26cacf319b78. 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/DKM932000201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdfdf8c59b27b50b9643f9b6b69654014d461eb386858c45a8000ba3f2efa19. 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/DKM932000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9139c4c935ff9a2c6d96f7b834a4efd2b79b0d91185f9d3afa848bca96bf3a8. 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/DKM932000401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832718ef216661a4ac44523d4bda1a500baf8d4958e5c60e594e26cacf319b78. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DKM932000201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdfdf8c59b27b50b9643f9b6b69654014d461eb386858c45a8000ba3f2efa19. 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/DKM932000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7faeb6e89e7313329832a13ff0f946e1f2e9e5674d51094cf5d9754b33e79a91. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DKM931900501.