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 0xcbff2f918bec94d4998d00b6c9c66285fec7e64d29eb0b537ab4f093e232cd3a. 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/a0a99de1-7647-42ea-a3af-af34424511a3.json and https://artists.proofprofile.net/proofs/artist/a0a99de1-7647-42ea-a3af-af34424511a3.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 0x14626a04e770309ad0fc461de06c57d3b0b390420a1eea2f91d0d71ca5ed6c25. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/RUA012000155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396eda7d28e069b66d911fa9981d5cfbc8e0f699255f0c69e015131ccb665173. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/RUA012000204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7892f2fad5575a060fc68282bd918c10a9a8191e71de9fd6e7ae862678e396e. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/RUA012000329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9194c5a5f7a62594cf9e6118e3aef137f5f8443a7aec6df0928a2430d9582d23. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/RUA012000537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30eb9ea3852a39494fc23c2dcb4985d1a9e4950399401d5627693620867e7183. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/RUA012000394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e0ee7cc535906d2e7e27e218bb1efafcae4b5f56e146b942054cbb981c3a44. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/RUA012000540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde22b36a85e714de9243922beb23ff42c27380f020ef22f27c5f2826f72e3d7d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/RUA012000762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80198a6e76592b7c4880aec97335de2747274c48c833e4a274b3788234e9761. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/RUA012000890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66224539949be4a9086b67b4436d0054c613a06e554af8167b08f34eca81f94d. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/RUA012100234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfe1bf93120e8ad5bbad810476ea523458080614db6aace36b277d7dff8f92f. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/RUA012100238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3a6f4e3be6927e59ca7072258e165f361106d71ba92b097ee0495a1e12b443. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/RUA012101047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc168709ca3c2c7fc5d5cc341836c9df7ef2893a35a6c088cf4932fd2add314f6. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/FRS182151085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94879e8e29570abb8c5079e34779258f892dcf05fbe89e585a13a5f9926bf4a8. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/FR2X42294169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2869701a323ecd0d27466036a59280fa67d84587fe5aab5d7a2dcdc1732c599. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:01:17Z), 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/FRX872218472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3be9c33e006a1c6c34a1313f6fefffeaa53c458200f7237de448f7198627f68. 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/DGA072223074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9728e6ed04f73ed2a26420cc0c913728ad49ef1b224de912c822019291bcd2af. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/FRX762308869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5afc8e9942859d3f1a77faf7fe3540e70d9a648f564060ccd1c68cd21b57a9a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DGA0Q2301181.