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 0xf3b9e30419d522884b1c0187be3c40b8b7f2852db2ba00ef0693647c761127eb. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0923932d-b8f6-420e-ab87-60826052a48b.json and https://artists.proofprofile.net/proofs/artist/0923932d-b8f6-420e-ab87-60826052a48b.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 0xc0a4b34d460c1f5d99911963bdd53b2be6aa0a9e56c2e6245b2df01068bf4bdf. 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/US83Z2465640.
Sea Of Voices (OIBAF & Samuel Wallen Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980597b173a61da52ef858b59b2d795c8098941fa5258133166729c7d42875bd. 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/DGA062352033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb42dff9daf77c33101d90a68a83404b13f7107ad7db470b19ff3129a90ecd8b. 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/DEH742412195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e84c9eefc2d39291c320af515e76bf7392a2097d53bc78eaa100a7ce8d7b89c. 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/DEH742412196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe9110c51c98f03e0172188c22a44dfc24e96b213f18257f9f9f71dc8d63766. 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/DEH742412198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c8281ee5d170da1df345140c109daadda1c6f4863272da17a321bf5f521b15. 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/DEH742412204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8610d23bae7ca748de040a5d6a0ce8ab41769eb3dec873a0c43e7c962183f771. 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/USA2P2403979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6811d7955dac4cccc5976502dfb30211805896960bc67bf2a1375da4aab06545. 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/DGA062352018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc534ab29717a258c187287b10c37230f9d88777beabc249d2fb38e3ebc6e2b22. 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/DGA062352023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51fc4cad7c6492feeda573f4d81e0685f089a1a48b2bf0eb8f4678e47d7f0ab. 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/DGA062352029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70c0a00572f4262a24ee0d502e31b73e07f2ed8c309dce64756efe4c13af771. 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/DGA062352030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f51177210506b3bb5a4db74d73439f72652c7b2c79340cf58935ca954ea41d7. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USA2P2403987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3c6eccca85f622a8a54aeb3a845b67e40fe43eb9af0f098791b916f0fb8f72. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/USA2P2403986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007aa9ab0965f7bae330c4ae3c0204658ab29a1f7d27da95bd4a604ec072239f. 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/US83Z2427934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b53b8fe28b9378c864371a596f9f75969db21a0e530cd2112485d7f79b21403. 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/US83Z2427932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007aa9ab0965f7bae330c4ae3c0204658ab29a1f7d27da95bd4a604ec072239f. 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/US83Z2427934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7be34c91697463a26e1b8ca21da4ff490ec4c471cc710b12fd67622d8088c7a. 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/US83Z2427931.
Waiting for You - OIBAF & Gulec Remix - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2c8a89642960e7aa2a534030f2226325debaad7bbf492c3d9e4609b4cd6cbf. 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/US83Z2427933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb466def07c875a0d6152eb64768417522d6ab6fab6be941b186edd258aaa66bd. 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/US83Z2322055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bde355290894a5570b6afb2c795b388a42098a8f3c510a65e5dbed9365ad23. 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/US83Z2022427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390850876efb5804414c533d8d426850327643b0eea9a9c6cd5624088a000018. 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/US83Z2025245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26eb6bae9c6dc9837608cbe0b1997ebe5e592f4ed6c87335f309288f8d781df. 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/US83Z2113182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad425c99c309c594f755542a31e8df27eb76685992bd79931827fd0e093b5cd7. 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/US83Z1929273.
Stuck in My Mind - Jos & Eli Remix - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988013e38b226d0b6d453b238ba7013afb94e784346e7e7b2f80a0e22bd0cadb. 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/US83Z1531750.