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 0x7dad1521c2d388fee61515800a658a30409521179453124ccad35f9c67f57a3a. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cedde602-ac7d-480d-af9b-dd4c84e196a2.json and https://artists.proofprofile.net/proofs/artist/cedde602-ac7d-480d-af9b-dd4c84e196a2.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 0x8e4ff60ebdc5ce58fe1eb1455b63830fd941c38aa50997193392bf2bd965cbea. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/FR2X41930204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868315417a91579d873b40049fb683c6399748a07a128889f267ff11f5b740ca. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR2X41930205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934e1f2693d89b1a576e9fdb0c2fd2a5c0b3d3bfe64921cba72be9c46d217843. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/FR2X41930208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bff4bd6a1fa358e1ad167e85c40e07162bfbe7d675498eee5a57fed5e9e88c. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/FR2X41930211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65e738674f2e9fe00b938751e8fba17a18870845cb8f574460eefab14dd0907. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR2X41930214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31400019642c3152b93c9ebfa39ff2ea29e4601c69362bba34aaa10bab18777d. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:49:54Z), 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/FR2X41930215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0598ad39bb20f435bd27228d7bed5079a9e235021665ba1a188b410dedfb9a0b. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/FR2X41930216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c48d26856b63d2baeba2418896a3819bf4d66c668bea3c9b3dc28cc709ec41. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FR2X41930218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc34a5756d8c5042dc861095f3cdd43bbb06053f9ceb4697cf9c52f51950bb5f. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/FR2X41930219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a80f070012c0758029f6722ade26f86fdfd4cc455a360a159fceb9da19fd4e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR2X41930223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3eca2cba6e5dc543d7419d69efb1595fd6c6f8647997228e972009255278dd9. 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/FR10S1985201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b782a4fe648ea388aa3c502fd0b05e3561bf435d0c22c61cbd2a3b68236a2b5. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR10S1985202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458ec4d3a555d9b3943878c9ae63a5ad765db22f9b687a782f0d8031d11899cb. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/FR10S1985206.