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 0x83002a7dc0b4f2f315fd886adb0aa2bfbd832ac9d42e644379ad358ded84bdbe. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/49117034-a748-422b-a1fc-126f5a2a76c6.json and https://artists.proofprofile.net/proofs/artist/49117034-a748-422b-a1fc-126f5a2a76c6.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 0xe18fa9ecd70feb6bc2b178311c3d6643bebbfd1634da0832453a6a400327e4cc. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USCW62191603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff799ff0ae716e3805ed1e2582112863b8580a96b0549a66eae3d3acfa37e1d. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USCW62191003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0862639ad41e6c3844c67c4ea55600ffd5bfc80dd04ad9127d96b631f14321ef. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USCW62191008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a29e691e5012b808d788dc1510dbecbbd3500b43105ebe90dc1ad9dc2fca32. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:51:35Z), 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/USCW62191010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912a80a5854a25e6dc8fef3d84b54cd8ceed31667d2ff53179daee170232bc50. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:08:44Z), 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/USTG39311808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de1b7614a21d02e2ff7476c175b53a1a1195de3e581f24b0b6b61a2a45fa72c. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/USTG39311809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24dc8b1f715c68c5100a3422296fc05ed8f95188b3773a6a4eaf0300447bfca1. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USTG39514201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d829e94db9c2298ea05cfb192ff8685bc07e795a393862165eb3945c10ac4f. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:40:46Z), 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/USTG39514202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14cc151ab9a4cc40c32f044b8348b35e01e4236531dc396f560d73477bf4782f. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USTG39514203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bef8b40bff175c0f519f4cc9173d4496c3eb9ed52f854731042fbb173b1f443. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USTG39514205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828df4451bfec73083f03db9504e97becd725e981bd0061241b6d97dd0a060b0. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USTG39514210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5507f3a429f9a419a6456be44c6e47b41574a43f878a31a543326cb9d6984d7d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USTG39817501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9360e209fb58e05e50caaa1c274e9aceb0871028319eb63328ef639c330e5498. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USTG39817503.