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 0x8576e27719dfbc45af92511f06117ae0871fbb93e37303a4463a48802bab6aab. 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/f3037bfe-cd2e-4dd0-bf47-92bf9abc9234.json and https://artists.proofprofile.net/proofs/artist/f3037bfe-cd2e-4dd0-bf47-92bf9abc9234.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 0x8b337ec9a76de20cc20462f05cee2aa60648ab03afbac6d9cfdca035c0517ca6. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/USX9P0682812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5998bc1bb0d1d592430fd5cb1e837f9d367363cb3c3ff182a0c01c846c0263. 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/USX9P0682813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf561f05d6a251b22f687f65bfc797689dbbd441650051fb4c5f40c9151c5f19d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USX9P0682814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11012cde8d862e3aee87e82b24d9b23cdb8a9cfe3ee105dd21d73e92dc5442aa. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:54:04Z), 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/USX9P0682815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe592380bc32deace1e705f415644b9e06330b5d1359792c778ffa1d8843bb4b9. 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/USX9P0682817.
Tony Weeks and the Tony Weeks Band featuring Tony Weeks
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9cc971cc29c431c290f49b484a83fd6ccdd09703ed96740827da9ce023da247. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:02:01Z), 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/USCGH1109506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0461b24812f78a0c4a5f5e04a10684b1565970e8944f816e1ed0bdae40ed18e. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:40:53Z), 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/USCGH1109507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef7826780bf1d5c04fa41fd015e21a1238b5648898a3eda9d22268d4c4bf08e. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/USCGH1109508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8f2a764f18101b501dec5540244d7828e827c2a7bc5bb8c0f47b6aed86fc0c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USCGH1109509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03736fd7272e6cdafdd4178d5940a4450bb268f5944afac9a4e5543e96c89d5. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/USCGH1109510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5596487dd94d2444a582c721f9a69233201ee240d223d6c28a0e72b4b2c87da7. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USCGH1109513.