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 0xb1b4ee979b67cfe7b3502cecedddb2afaa908cd94b7697e8870b7599cf3486c9. 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/40f95831-e6ff-4c5a-a93f-e9e838ea771f.json and https://artists.proofprofile.net/proofs/artist/40f95831-e6ff-4c5a-a93f-e9e838ea771f.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 0xd660920a3ec0b686d9396b28266f8d12eed65f3b7b01beb836119e9943322f14. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6F2398290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753afa425892d345bfeeea42212de282475ed6385476dc307e44d5e0ad97c258. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZK6F2398253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c633213691426fcd0551e92f02e5decb5a4326d20b75c0e2fc491751a90f97. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ES64E2307481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2730555a1ec20456060813337857e9e508c1e9223bc7553d15876ff4cc1d6574. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES64E2307482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c4b271b99cdafc8b2c5ff65415dea4c051600f3bff9932dbb888df12f4593d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES64E2309925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff08aec9d609c2a068a06c19741158388c9581b8a0c949b0056792977cc837b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZYFZ2342716.
Coleccionando Monedas (Instrumental Hiphop Beat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4318cfb66e5a047838426294d91c93c0691c0062cdddbd435616172f22d13521. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:01:29Z), 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/QZYFZ2342725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd549ac440bcb30d088b813e468813f5b482a1d4ce197337bba0b4bce8d6dd348. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ES64E2326312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09201a8dfd02a60eed90e4818a9215f0a6c07b5083bcd8ba3738807c88e83d5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ES64E2338271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04f9ee29331d7e19182e973abdc03784a168a283d35328df0602068ee89e76f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ES64E2338403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0910392400b13757c301ae89d2b39932be732e745f41e99b8d13fbdb650d36a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES64E2454908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfe4060f460e98b7806abd2229f3cb268665047162245bf49694ca02e39cafe. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZZ662418060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a52e98f073940c2939e3fce0ce09e1b148d7f4b2372c5d8621fc3c5d4c1f64b. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ES64E2470985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae5a7bf185f89209fa3c4b43c0064b2f1e85e35948b27e8223c25b59895b1e2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZZ662481924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a2f56927dad55b86c6e4125d30d41eabfc33a0ab9ebf4d871ec78eab484d1f. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZYFZ2422239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8f3862b847b91eb48ad3fc920cb70b35fe526d3899f76ed0dbfd246f26e021. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:07:37Z), 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/ES64E2489131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec928bb1578c1de104070a6ed817bde1b2b5dfe6b48668446c1e71e2d2be70e5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES64E2406908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e022df5868eff0957a13e244ce65e07a92eb133a598af7922319d198010aa6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZWDW2485537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f2803b456f3ea952594b11b29327f593fd34f4b67e420d459115cb54b669c1. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/ES64E2410938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e15afea592bdab6541067253ab5c0eb1ddc847b94a50621b86c71e8020abece. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZWDW2494745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9a286b3f1c22b669ab065218ecbd60690a8ceb7b61f080b39e2e293cf1d792. 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/QZWDW2341948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0c667f3ab2ca39ac2c9aa6a17edfe0ccfc13f9db54448c80996c910d0bcf3a. 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/QM4TW2228499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d39690583c66682c1deea64973b78eba3299e2bb17a2d1988417a91122c5e98. 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/QMDA62126914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc7d0945ede85f6fa0f164a46599aff361413cdbef115a3bb37540c487a437c. 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/ES64E2469210.