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 0xf3ca29b3b4ab2363170dfb1d8b2d256e70077e347819aa29c888fce59018a50e. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/74794952-69bd-4681-9fc7-05e5c58b36ef.json and https://artists.proofprofile.net/proofs/artist/74794952-69bd-4681-9fc7-05e5c58b36ef.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Yonce Secure the Bag (feat. Third Ward Trill)
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 0x75a16d9af63b9c692e8f7eb80afb7599e257545df68898f70159867427c1e77d. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZS7J2592267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd53ac4767c8c2c3f6914ab82df07536a24d5142bd5c4a7aa2371635015bae97. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZS7J2580000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbabcfb7a9a2894c8f3c0682592f0f28b14f7024c5b49ec6d3b03c3b8df77e6a. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZHN32566255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2574ce307be7dbac699bad582033b775835d0ae6d193dd79fd569a727b4b5fcc. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZS7J2455184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ce365cd9a50db0aa36276a3b2c248cebbf2db06738cde30ac46987f10d9824. 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/QZSYP2531575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb88ff7bfe3c5f721a51a10ff652d506748966c732a7092d60c1766b9118a5c5. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZSYP2553743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34410c7c3688da6a8fe333864803140ab5c0a7f79e65c95b490681c9a6cb04f4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZSYP2511704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a428f749694470bca1d7ee7e84a67ed7229547c16d2d69354f91fce0d7d472d. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/QZSYP2508360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ed61be3985733a6e27ae2322db896d6a80483c00de1218c093658aafb77085. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QZSYP2569527.