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 0x49705d2c68a8cb41f591c830fd869f5a49ce8a54c716e6fd674591d794d489f0. 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/a543c831-28c1-4246-a189-bd3af1c8fd21.json and https://artists.proofprofile.net/proofs/artist/a543c831-28c1-4246-a189-bd3af1c8fd21.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 0x347e6201f838d805b9a3f3bbbf8e699acb9d8096ce5b6a21f11dc6d5b5b66d3f. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/DGA052207330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9ec26a2dd029acc9092310871564ec1516b026f672a474e427a876c11e8d83. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:31:50Z), 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/DGA052207331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a9e5e29014c806e0a5bfb474d7ab7708145021888cd502871c8e9e6bfb7793. 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/DGA052207333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7c3fb41111ad3f21acff01aaeacdd63807f9b64e147732d2557ee5667e3f57. 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/DGA052207337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05ec33372e976e0a36617c8b562eccb0954d3b3b3e08591e563cf7ba1efbdda. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRX872288201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ea114124f05760043c1439e9937a26279bbfdbc92331af3e9c8464f6440bf8. 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/DGA052207342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103c76b71bfeaddc74699ce0b591ec85f827a5dff896647aa824538bd994dbe5. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/DGA052207343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660ed6a2843164b389e189dd22cc14e3b97c2c0d4cf754b8d71dc1c2ad86c559. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:32:06Z), 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/FRX872288354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31dbbddc827b2f64ae0eb5fb75c4010fda491a60a6a2bc02e9924ddb0525e259. 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/DGA052206302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55afa505f632a94b0e51e98149520cc4ec01aeae7229271e6b51b22601a48880. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:21:49Z), 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/DGA052207209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28dfe3f7533e48d7a970fcda29e5a9bd6b7a5e78fbcc84d318317c467e202846. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DGA052207418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824d90e0fa225b8e222cf3616e94058dc8553b7573b2f57e53f16df81c87885c. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:07:43Z), 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/DGA052206271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fca01c9fb8ff268173191d361279fffe58b7bd05cccb79dead9b514bd640c1d. 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/DGA052206273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb17b3f7aaba0cbf04caf87f86b68fdf830b42982ed9c897bb9b5eb27031b915. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/HKG732341665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe04a7515338924b29729a00085902c686ec2ba0a54318242931a92b401d821. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/DGA052082158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d0aa5c9c8e354953780943af63b931ebe443681f138160fec89a6929acd780. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX202179379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d8fe289649df68ce683d4585a4b025e2db6fead2a97ff04538f6b36bca0898. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DGA0L2357200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8404949211e55e67b7db6420f47b910f70b5b64c81f69e4e869a4d274032e26. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/DGA0Q2480921.