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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f294b10eb623c28ce017b06be17350860eaed79e235c1a949892603cf7b570c. 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/41e30007-aed3-4de3-8c01-c988cbf4b051.json and https://artists.proofprofile.net/proofs/artist/41e30007-aed3-4de3-8c01-c988cbf4b051.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246864d4ac0ab8f1f0d482caee4ceaea4dc64311d526789321d2dbfa1d1eb942. 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/GBKQU2474856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcecc6c9caaeb447526477e88570a31c773450a550b4d350088953efd00ba7e9f. 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/AUMNW1800482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8566900c7bab71db3922a79bd0766c9e07242ee6bb5857ca81bfa222fd3e4f20. 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/ITX4M2400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916a846b539914b9f341312866972c69f39b415362f0943b9dcece02865314d2. 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/GBKQU2434799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b49478da54380fe08ecc0749d863a3118f375b85f930f24da90af606aa3686e. 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/GBKQU2434800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375ae70fdb080cf65465bb102e4ad1c4b4e71a729f2fca8a6ad3a2cf8434e9c8. 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/GBKQU2412466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c16bb0c5eae044ffa905a04f380936f8abdb933fb55c513d60e4f38626af9b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZZ8A2339592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4da5e1baeeca7862efd33a7d95934d11eabd67a86ea82eae96640c3ca26a5e. 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/CA7C62301062.
We Chase the Sun (Mirko & Meex Extended Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddb06ce9c3b8312e3ca8b203facc44b833e031e52c1cc0c0f4acda45d89c6ab. 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/USDY42354514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed9405a52fc736cb5a7dffe90c3623ba3a9f55f46e7039b9458e0a2e8eac7cb. 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/CA7C62300987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d555addc4580aa6215c27c10b7db0f1110c48c48a80cfe60988a82977a6767. 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/GBKQU2313339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c2e6ae691b9c57d3a0e3108cf0e12faf3155c45a13137cf1b470897389f460. 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/QZTV32206450.
Real Vision (Mirko & Meex Extended Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f060b2cc31e970569df4fe01c4d8d392052aa4e022e1b08d2240c47a5c1beb. 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/GBLV62201651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd1fb53d24d085e9f7e5bd5ac7a679f2a37e87e2e1183f268deddb8ace63c4b. 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/GBLV62201652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce28a60301dcf16ddb3230f0f8135969b34ecc2174c9ac59e69c902c21059bf. 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/GBKQU2283419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6d28033c5eda2ee33747bfcd95d068429992eda313cf472df006a6d72e3af0. 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/GBKQU2283420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbafc38a8648d11596c3bc680413098617f60b60ba91d25c53b2db7df4f964d5. 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/USLZJ2286276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde77833475960ba5fb84dd602442a4e0f694a86c2e1b720262029db804d4e011. 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/GBKQU2246571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75cf43fe32353a13405f28e1905777a51a4fd219c1876e30c559fd4e0606e67c. 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/AUMNW1800228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2296db74de1ba857960d0d6e0c0d7e192667c5948ee718b060ba08dfa494abb. 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/ITX4M2500126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5f91c4d0a2ce37a6402fd47c026686f574a8786c8d43dd9fe0f0dd52ae570d. 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/ITX4M2500127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed3ca282cc91e20c2e9e9d77782eca20fc05aee09851a3ea3ca5bc04b78cb54. 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/GBKQU2541778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038522b2472448f329abda857a4067d2acc75b8f1820ff588de70f3ead56bb7d. 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/GBKQU2541779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d582453dd0932e67460aa82f129d6ab5bc62cfc4d277165e8f3190f86e74f70. 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/GBKQU2520890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261f7fc6cbdc3937e381f508df9fc492cdc2f3490bca453dc6c4da3227455f82. 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/GBKQU2520891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd67ec62cdc09540f436e0d0b3a85df234edd168207791b12815c026ab507af. 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/AUMNW1800535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad47dfee1e40b3913cf549ee26e681409ce93ce6cb668b1bc91534192d8e1e0. 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/AUMNW1800534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc36ddfc9c14e83bb510cf60428bbf0c6618bbf6a337d4e49e9401e23e1f75aa. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:01:24Z), 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/GBKQU2501938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068f2548ebec0f0e70bbcf3e7b2ca375fd1177b5fd92f60c4ab93c208aabd92f. 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/CA7C62501256.