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 0x82ce24f5c3e2f38fa274895049b6f98bfc56475d0819d4fa572d456684d46631. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05ab51fd-4ff7-4b4a-90b4-dfa414074eae.json and https://artists.proofprofile.net/proofs/artist/05ab51fd-4ff7-4b4a-90b4-dfa414074eae.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 0x3bf35fb33492e7001712ca9d1cc0d99968ce4cd24b3af81506dfa9be0aa2b5d3. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/AEA3A2510383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01276ba9b403da71bc7744dcc71367881393e79f6490e687fdf4824055697e0d. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/AEA3A2544876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7005c35d9839b06a94e2e88b7884d17bd331bae84c7c4f53cd33eace01664e. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/AEA3A2578101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ec17fe94c467d8946ce195255972a97d84744cd5d9bc25407208ba951ae020. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/AEA3A2513775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c4457b13ea6565a684872fdb400e32bb297ec1412f8ea19eb576f27214ecba. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/AEA3A2537204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72d039121583866065ff42eeacbf7603a201a39c6dafe4cf04714816159a6ba. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/AEA3A2543628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10f761ce8b6defcf13b518e302060de2bb467ff83e5fc128101d6991d1f9af9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:41:13Z), 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/AEA3A2530132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443b8f6bd927cc2da4726b37f03801221cc24daca14739b758ac6ae483220545. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:25:22Z), 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/AEA3A2507599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940ee4ebb7852287ed96d0d18f6852ca351486896377558ff3effaabfec5dfd1. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/AEA3A2148974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c65fc074498ead44d178feb4c22127601f5d5ddd9111cd53a5fa965767641e5. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/AEA3A2164222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea22704053376d1a45b15c885df7c0bda9d47a9fe0abe3435e78806290d5a43a. 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/AEA3A2113455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4bad21876c920cc8c363b9661feabe566f92e2a66a5a754da4af594d5e3016. 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/AEA3A2126044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdddab7af960ffd8e6604881abc10d30b5eaab973fc53b723e54eaa26a6e6dd81. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/AEA3A2149710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfb3d48742c1b96838daaa0419f4cfcf3015503f40aa6944369a8968d5d0613. 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/AEA3A2170331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bcae4e09f6dc1efd814407a32b654aa34536a17754544c194cceeadb817cc29. 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/AEA3A2197936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb717218a3d29b74d77bf740e02e3c22294949b2815ac12531e32cb40a88b0a. Chain 2 (Bitcoin): anchored in block 958635 (2026-07-19T00:58:42Z), 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/AEA3A2185771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ae15ded73cd09d1c592084aee6c5d8333fc0a36f2848447540cb477814924a. 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/AEA3A2186875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a75d7851e4a365fb0eeba30d528460d22dd00544ca65a667aa1a6ce59e2165. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/AEA3A2178257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4a8678193cd52145afbd3e9b294492d96608f27fc380e85253eb5029dc09da. 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/AEA3A2160774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913fd3cd5b4e6eb4abc0a79e2525d8b71b1e94d058ed7851a9281c1b4fc85253. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/AEA3A2167855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10ff154f9f3350bd7ef987f3cc44be7f8f5c3c131196409dafdeb438541d47e. 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/AEA3A2139082.