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 0x9e51f820babff3774ba763c9ea1f8dd60dfd1706cb2c56408f7790ff59c1a7cb. 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/d4a0bd35-b257-4f4c-99d5-285dcb749f27.json and https://artists.proofprofile.net/proofs/artist/d4a0bd35-b257-4f4c-99d5-285dcb749f27.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 0x738182bd384092e8c8decdac53e9858b0aa658d86d63ccc83bb201255b2639d8. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/QZNMX2103798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738182bd384092e8c8decdac53e9858b0aa658d86d63ccc83bb201255b2639d8. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:01:22Z), 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/QZNMX2103798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd41d31a1985a1d7b81fcda1bc168d5b44d0b6174c2ff99af4a3b69048ee98fd. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZNWT2231999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375223bb34e72bc13345bb5152d96ef1a7b16f4894102fd313f732675cdee37e. 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/QZTAY2277448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7119a70243842045eee9206e3f245a93de4cc12c9be0b74247c2afb8680841. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:35:40Z), 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/QZFZ72350913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7bf8718d0c5d1cf7d8c43bdab9a4dd2ca5029be342eeb8f9f85501dda79a0a7. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:25:01Z), 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/QZES52360255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7bf8718d0c5d1cf7d8c43bdab9a4dd2ca5029be342eeb8f9f85501dda79a0a7. Chain 2 (Bitcoin): anchored in block 957552 (2026-07-11T10:04:42Z), 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/QZES52360255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d96b10445d1ce21c43609d7c0431ee3ca5733bd42673808c3247feef6a89134. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZLL92326874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56f3a33d65dc02d17479a25afb7ca7fe7a3f802cd3365b72e6cb6205da336e9. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZK6H2468363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2500f3b59579bc96ca419299fa7a0b93af730d41c5e0d2b37ce37e8697c87c8e. 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/QZTBD2437857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf4cfe0e9a460f521b7cf475a1a72f3eaa1832bd1da272cb32c96e2ab895f0b. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:06:51Z), 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/QZTAY2414839.
Memphis Connection (Westside Connection Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336cb5920b8137457f97d706f50368504e18a89ba17fb26d28a9792ff62d1a08. 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/CA5KR2533822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336cb5920b8137457f97d706f50368504e18a89ba17fb26d28a9792ff62d1a08. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/CA5KR2533822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a0fcb62852d3db790dc51ef61047094ef44265d0d01def4354ea4be49f81f7. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:07:36Z), 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/CA5KR2531722.