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 0xee4b4ba8e057c350e51d65105d6450b631753f9e8f12cc7a743c54bf2d7109a0. 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/4c5755e4-ef70-4204-8302-3342bb49b9e4.json and https://artists.proofprofile.net/proofs/artist/4c5755e4-ef70-4204-8302-3342bb49b9e4.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 0x10bcf1dab2ebf6abbdbb3ebde3f107330948db1ff731b5837cc394bd5c49deaa. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXNT62204672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8113188ac2fa4962f4a3f9fcfc9a3e024182b8f9644fc2f3c097371b257f189a. 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/BXNT62204699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbe9a89a67c4a2b0631793d27a94d30f35dbf049cdb33950e48e9f44e0d0b76. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BXNT62204750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49915d9ef10baee751053ff0baa7a342a7913a6cae44994d2cf18e7a2f731aac. 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/BXNT62204769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12f70ce578f3126a76f63fc8079167d1911c8bfbac95c4a937f5fb7d7008a7b. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BXNT62204781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8dca9e08f81a6f8b87b86eab62444b50fb1aaa296699c8f69fd88ee090b939. 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/BXW0K2100052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64fb3ba6ae208c30b98cd627c9ada7d348cddd74331ee9de09cd5037f8f5220. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/BXXCX2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269ea025f8bcbf91aa96c010cca73d91c87270cda4b3bd4239d5b140157da548. 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/BXXCX2200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df601ecd38d2b4f57718a761c1312230f5e2ee3a9011d8d889a8a9925f4e805. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXNT62205012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6d6c8fca8ad5227610def24613bf1ec462215ca3129037a37e5422608cd3f4. 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/BXNT62205105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46311844c3141c65d95e530ab45de1408048969ad0a5918b3442e4033c208ef6. 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/BXNT62205011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be54168d25a6a1e10eb279e49691e91912adf88deac45de2cf6577ab4ecab98. 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/BXNT62205146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9aede82653bc58cf2400d5bee2ba49268d578f2478bb672cc6e70205faf6f5. 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/BXNT62205051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265768993ee0b54912776cac2e5d1e018677409e30e4f3ec4f26c69041f89169. 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/BXNT62205008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62348eaa681748951412f83fe22c9d99bf3c090f940df3b3d4ba78c454db62ff. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXNT62205004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9ad8ea55fd8f1bfcb985debae647aa69da1de841d22632a94ce98411403084. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXNT62205007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b64d821c135c43d6a526179e1bfc3ea1d8c87904fe580ca1fd5ad9f0e8f474. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXNT62205003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2cb96c38005a53620948eed13f9d7b8243b0ade435699cf4346ea8d445f046. 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/BXNT62205014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811575f4a432af0209e5255d0ca1ea65a18ce9b4525b7bd77e98f65d36d34020. 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/BXNT62205002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5a03585f3331ba47e611dbc5f615418b19874b8d031335932b069dbd072bfa. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXNT62205010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760b171393733423889bbe1b4a4b7222426fd1374e78f0155ec178147df734f3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXNT62205009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f665ecee237e8c8422f54752cf6c992c57bfdbdd4a86f6a881eac34c8979a82. 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/BXNT62205018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1492f6363483519c2564a91a62c5647e52ec8ac4a8b0c1e60ec8509e4c922d95. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXNT62205015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a53dacafa5149bf74c514ce3b325d8326ef46fa29e68b4ebb20280a947b7e4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BXNT62205057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73be10692eaea8feb03f7e02e013ac3e706291abf5997be1f541f11f5676ab15. 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/BXNT62205084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561451f0355bac5952ee46fe5087743f2295239bf860550597bc915b87a8b9fb. 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/BXNT62205013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac16cd28463c99146418144ba7556d4b8f5fcd29950ecf062bb9a0aa5de3baa. 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/BXNT62205026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f122a93fc0356fb60588078db1b605f218ed3262bb5fdd866509f82a6dbc89. 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/BXNT62205158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a838ed7872b3cc4ca1976d5c8bb82da477a09632cf7f31b76a7909fe6ffcbec. 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/BXTB12500095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd348ebb8b3dc5f64d852176b994c77f25c22dd9f7e8b1b9c8d2e27e5b9c2d470. 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/BXTB12500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e441a073bf9652a0a42b480188d5be66fcd85ebf8b6957eeecc6127c6f391f. 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/BXTB12500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04cdb51f8a529cb505d5ecd83ca0a65f33f505b283ae91e3d388569986250b0c. 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/QZHZ32080598.