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 0x5c9b5d9df179c5dfab9dc28c5338493392c290c866fcc38bba59e5177c0ac586. 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/37a27c98-af83-4702-b89b-262648fd6fbd.json and https://artists.proofprofile.net/proofs/artist/37a27c98-af83-4702-b89b-262648fd6fbd.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 0xfc4db72970d17b394c18d67f0e487429de38fdaddbcaa25e8e8cced3d01c7870. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NL8RL2446423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15d99f1ff81d88561cab8fbafe1d0797ab6a69580abd263246499cb43e87473. 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/NL8RL2436001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32be72c680f36c3140f57a2cc2a75abd52e84e36fa63d13fcab19a4a9428e81e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NL8RL2433818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91422505727058dea4e153b9d0d2cf92a82c83f1b95bb3022228fbd22b027170. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NL8RL2430088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e5e38e5deaf29c7f2a47354a98c5262d9bb3183a9345a7829bec67e44c5689. 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/FRX452471741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85043d8d09283f73637c674a6721a2a0fefb9d08cc779e1187f70855479a679e. 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/FRX282420821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0871783dbf537569f5e5381aa0da5028da28f64316952d1a291682a17682a213. 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/FRX202444564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957bc1435e541f252b066ea0c137ab5089bdd54482c3d3898dda3a89d230ca51. 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/FR96X2417641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8b316c60b88a79bcc09ed18b915266d1565d9f66eecb8aef29187095340149. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FR96X2418288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa777ca3591fd7607a78fae8fbbd804db9ba9aa17bbc6ab9f62c6eb477cd173. 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/FR2X42461094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe395612503623f345fe54f680e82dc63d179707a2ed0af285fdf778567d32f05. 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/FR2X42405091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd76bd13225e5976248d485c7054c6a230d43e201b23e4649f5c26936e931ef. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR10S2465263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412694a1b3e139e692870bb28f53022e2a92632f6886616809bf53e58d7d4f56. 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/DGA0R2315011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7dcb983ee7a9ad7dfc1bf8737116b131e4fc1c06a3f42244b7d0ac2c2600a7f. 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/DGA0Q2373303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cdca3976e30339181589880cb90b8d523645a17b5b2cfe069c686e2be46182. 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/DGA0Q2343530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce4832c49d829c439cead61ba596d4e83914a0d515e99c3ec397bc18344fb6e. 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/DGA0L2379625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468ea3dea57fdb707fbe397f0d8f9f9e32a69bf207ecd7fec13ef1c5889fae45. 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/DGA0L2356646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3bf9fe6f3df8b5315f3a49b4be7cbb7b6a0a5323ac0c9bf60c3fedc49983be. 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/DGA0M2392990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0da4510fd7b0c9112963b5be1e9bbf4c386cbcb98ecec903051c24d59038a8. 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/DGA092375734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f4f8217b40e01f2374fde95700dca8e33907c33d97c467be2151167b1f63d1. 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/DGA082306220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa38abf1c5cff4b47c3f6d8d521917292173c1145f380de44fa29560f14ad90e. 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/DGA072302298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6678ce0d88d798a8c9f627309340e891d54bcde2f9f5aeb87f13bdcccb2342. 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/FRX872331243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e695312ab129d11de7693aa98ae73450306e74b885b32451aa90217870e8b4d. 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/FRX452363930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922423e67f955bde40b68747a0bce0673964916128736439f980f38643c41b40. 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/FRX202301572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44104475eb4c9adffe7672560d2f57c076a675a99faf64d74e2530f7d029642. 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/DGA092213166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf359c7486e352a0591d4c356251336a61f66e5a352770591343467474bacb7bd. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DGA072292919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00247bc2005ab97db6aaee3adcb2d65e4b66bca25cbf02a1bb47572ec2e335df. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FRX762227539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af1fa9f287715ee805ba5b9915aafd8ef5367de445f366cc4a565076a5a674a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NL8RL2505681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0bef38d55bd1184debd852e950db01be8fc9b2b0413ffc907d2d8be81c534f2. 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/NL8RL2459756.