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 0x47923a3ca1e965bed58a2a10c7cac51807c5f9476cfa349cd14f55ae72b30147. 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/8d201dc3-cf6d-41f3-bd01-cfa6d5ac86c4.json and https://artists.proofprofile.net/proofs/artist/8d201dc3-cf6d-41f3-bd01-cfa6d5ac86c4.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 0x622adfdb8ba14c3faf1051f98bb907fc78aea32a40deac38261627d84bc38acd. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/IDA662101296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121769643a04e6906db11b83a5a2d2d70d9306f44a3156d64f52963adc11aea2. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/IDA662101300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289e26daaec0d3ffedc47c3e54dfedc2795772f1b4d745a45c7124c0a88aa960. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/IDA662101301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2a567f33f75178460891d228a5f14f524d1dddc6104c076976dc0ff58ba3c9. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:57:53Z), 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/IDA662401860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8fceee4869e80db4ac6a5093e51b81267e5f3bcac342893301532db6803c76. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/IDA662401861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffbfbb348098b94267ae67c769826b014c06dc53fca39ce70365bbd2048673d. 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/IDA662401863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2451ffe7c77688d9fc0cf956a82867df6b690754d4b84914c8da290222dfd709. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:20:44Z), 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/IDA662401864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcb9aac2432d2e15d3ba4437cd8afd6918b6ba42df4a0abe24b3267c7c5e179. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/IDA662401865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d81a234db047fad0dcb1ea68eaee5bf08e475c685acebbadf9f72ac5b08529. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/IDA662401866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3333303d78a430562c5278e9a1a7879ff4b3930811192e78e3db340d01009a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/IDA662401868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9c45b0ff801596c623656b0b07ecf2146cc0ea5fa4d13cbade225bfc292469. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/IDA662401869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2785f2df5c6adaae258fa125e67717cb5004f8f46854ce2625e12d4250432935. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:52:48Z), 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/GXBAV2164482.