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 0x8320dc39e31ff8f51377181a2ac808bdc045208fc54a2084ad84cfe040be466d. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c03129e-4a5c-492c-bcbc-6cf719413d6a.json and https://artists.proofprofile.net/proofs/artist/7c03129e-4a5c-492c-bcbc-6cf719413d6a.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 0x9f7eaf38754cafbaeddb62b84c00e65e72f91b4e98ecee831bd33840bc8e7d2e. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/GX3Q92371873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5338f6c59576649037fc8f6875ff13b5233370339e05b514f17d0c105d30e022. 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/GX3Q92371874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbafc34b7a1d54db050bba1717726f6cb7f3f90f0a1758a75235266715bd775a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/GX3Q92371875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda406f1d72edbfa9bf29ad6b97975e2073f714aaaa8d026595e9b1010bea52c6. 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/GX3Q92371876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27cd7f6451aed6d75fd7cca681ff23ab7b8ea6c222850087574d749efa53d75. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:37:40Z), 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/GX3Q92371877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df8c3ee970f76badd3a6c5d49e060d61332b1379ce58b019f4cf0d7ddc6f242. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GX3Q92371878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d512139ad9b1e8ddf72d57fd7e57710f20e4c8282572cb9585d3ccedf34bff7. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:37:08Z), 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/GX3Q92371879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e001ea2b39360a035c9231da731126bcddb7069ddf4e676d8ad8229ac822c2. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GX3Q92371880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a8e72f5b02da873b1f508f45a7cfce7dc7596c2453a25079f2222a41a849ec. 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/GX3Q92371881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5b72b07ce7576055a2aaabee8a071e296b176e50e21b499cefc07fa3bbc2ac. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/GX3Q92371883.