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 0xfbca03388ad9c95af36d322f425738bfd28a91aa2e9d45c66ea8a1c7ec91a4bd. 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/bdb65071-e773-4fe1-b698-2da8d2ba2051.json and https://artists.proofprofile.net/proofs/artist/bdb65071-e773-4fe1-b698-2da8d2ba2051.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 0x4acf4c59113f91bf6ee5da1dbbd905bb2848ff67ec09254bd2290d72cdbc56a0. 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/USDY42110071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6881c0ad8d00a951b1619d349c9fe489f8c3a5cbfa1f2574041963789be6cf29. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/USDY42187670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e0abcb6d0d6b1469ae62ac2fcb9a72d83c5c1f02a449e29633c53492b58ca6. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/USDY42133808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73c50747acc703914f4ea402ce2cb389317e0cb9254ce00d038b78def178397. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/USHM22134458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34b493d1a8574088dacd988f5f99277e6fdc3d526ee417c2c6d26af07ff3915. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/USHM92155195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298c94c24ecdcb74b102b4ff63ac0069ae41d989c7c1bdf23c9a7fdd1e6cc767. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USL4Q2160113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8716aa501336aff7069b881cfb06a91746d0dbe7fd2e2d5bedc3506d4566a688. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:59:48Z), 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/USCGJ2237628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1a64a606b2a48e085145ecb6ddc5608a46e2377c43f6621269c63c435681d7. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/USCGJ2294359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53aa2129bf5e3c85c3215f5d4c41421011c559cf7ba4164797dd6838392dd198. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USCGJ2359184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a83ead36b13192c71c357af57a9b8ec2c059ac7470a4d44a9322e64a8953898. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:03:18Z), 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/USHM22335413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88215e5acad9a8911467ce59e90b2ebeffedbd6bae16ea7c649fbc2144ed3d2. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/USCGJ2407916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be7ed162f18c300c29e207a4dc54e9aca114605bf16aa385fbcdad99cc049b5. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:30:30Z), 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/USCGJ2407917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6653bd5079e2a5505e4e71b80bfd256a7d50e66e7eb1e8173da1146c44a8661. 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/USCGJ2407918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f22192c71ff155cb1671dc79fa9224fabd8999dbaef1d2a65586fbc0d21e40c. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/USCGJ2407919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1542c29c0e6d52a437ab13d64ad9c8de29850c62abdee93fcdf4b65bcd360e53. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/USCGJ2407920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef0ce7b21d989c953b087b7355d4b0d181a5804e70f99f4ffa7cd8b0463b2f8. Chain 2 (Bitcoin): anchored in block 957633 (2026-07-12T00:19:47Z), 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/USCGJ2407921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9c416adc2ed94482f7df3784d9402864cb7042fc19140c017cd9a349e994aa. 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/USCGJ2407922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59cc56bc3be885a5fd0cee70a035f1df523a89d0708ec6e9242fb30cc8f53375. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:24:16Z), 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/USCGJ2407923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b93e94b89ab0deed9d6cef09e4079354d23b5edb33bf2398cc1ab285d997e12. 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/USCGJ2442681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4610dbb29fed3da81ece724c1b06f5b534e2f2392603b6ffe0fad0532bef070. 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/USDY42571132.