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 0x10c9f0bf15fbae6ccdf6964dded9173bec02284a3c4fdeb3e00e40c8fdb9aece. 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/9fe9724d-f13f-4efa-92d6-04241df71111.json and https://artists.proofprofile.net/proofs/artist/9fe9724d-f13f-4efa-92d6-04241df71111.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 0x3c446f06c750b380eb07157f9b96aa7637f979c8b1f7b9df76a57942153cf84b. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/DGA052056376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5f63c0d5694fd46a9df95e1fc18ddd0bff387908914b7e4ba65b6fff5850c8. 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/GX5H92203600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98cd7a2f934a68e18d5045d48dc1504a69494f30c5d08d766a2bef9324f8afc7. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GX5H92203601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85eaf0e1454f9df162f511c5a2772cbf2bc1fa6a2424ed31cca3cb560107962e. 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/DGA052345478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556af8b45c3ba86d3421ef0a8a93c43095ae4e63855d1b9e53eda91bcaca155e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:57:29Z), 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/RUA1D2398483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1c0c48ea3d1989ec897b9a319dd4549f6a96c2e8ca01e72940d7122fe8ece9. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T16:59:58Z), 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/FR10S2469569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef16ce858f0be5f92af393a14549adb895d1d24b772fa99f856eb76cc258a3b. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/RUA1D2523603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f02bcc7ea970570918bfe192fff7d1f3585b170919a64e761980723de28eac1. 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/FRX452530259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b4c712210746b9d2b7537fddf545f43c1b78687610e1c94fe66081bdf63b9e. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:20:07Z), 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/RUAGV2508666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d394b0342d1072fa167993e16e4a92527e9a9194d36476881b43ebe448033b. 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/FR2X42298345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b1684340b0ec40b324009e805701965a195c23e11786e82835bf524f711110. 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/RUAGV2400559.