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 0xa65903441c4797b084c3c6a34ea8906133b57536285eefe5f89f14da7953b704. 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/01e3c743-edb4-4986-ae0c-9b13291187e2.json and https://artists.proofprofile.net/proofs/artist/01e3c743-edb4-4986-ae0c-9b13291187e2.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 0xa893eb4b9dce94f90113d3cd3072cae7f04e8121cfa97687e9f70dd216848982. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USDY42092353.
Technology of Freedom * Intiche & Yi Zeh
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb87c2c9d69ba43739373a65a1fc21465e82603f39961600abf66a51d21c47f. 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/QZHZD2068894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb87c2c9d69ba43739373a65a1fc21465e82603f39961600abf66a51d21c47f. 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/QZHZD2068894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc854f692e352df06d4b757a39e525788b498995be8177274ca954ef1f981b4. 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/QZH5E2112902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31efeaecb9331a1680bff292a6ac987961df08bfa4c34c117475d161f89f927e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM42K2558540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba115aeb736d834280e51190d388dad21f7ca0c19decd78a49b1ee5e370fdb09. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZH5E2489649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18ff82393ffcc610a7f5fb3d84ed8911795c86cd3713e18fb81ac5a4aa7e3f7. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZZ8A2512590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56dee4a48f3d79cf1f862722c7e4f7d88101dc4ff5b270171bc4798da2b30ed. 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/QM7281861303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bbfd361b40ee79f6a61f32f07d1e1bd08646f7b662bd080dadbede31faaafc. 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/SE6QE2246755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804d839e01f6e11865e9d6d33b2b7ab8b0e0ef9f2eb9453f4190334e7c3e7108. 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/US83Z2039550.
Antiguos Dueños De Las Flechas - Intiche Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b95602ee1f9e55dcb62a0f011751e2428065e94002b1f97fa76c7c16463b31. 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/UKLUL1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14949904c4a6d90e9756a835ab0594db9efe44abb138a5dd43302a7b8b04804a. 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/CA5KR1949182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae7bf85d407bcaafff1d9af0d40118c8cbd03deafee7ef3ad20ff1012f0e7b5. 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/GBLV61818659.