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 0xff314f8cbb58d4d37737c2a87db9ea8440f1eea1ee66fb3af34e16165fd309ef. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/26475dc5-f299-42dc-93db-db5d6c9f719d.json and https://artists.proofprofile.net/proofs/artist/26475dc5-f299-42dc-93db-db5d6c9f719d.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 0x707bbe26271da09c090d8f080c8e3bf0d5e64871b03390c3dc970caa9e44df4d. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GBQLP2000061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fe0f90080815c8bfa541528eb3405b798d503fdfea4c734a327e51d78a170f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBQLP2000062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99393507cf5dc9da241877acf3892589dff17b946242c0b1b253afe63c399a3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBQLP2000063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99847f8430096b063a0cad63889cd0daab69602b885d7cadf0acd71e4161bc1f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBHLW2102153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8ad06e48e0d9a6884008dded963bb7121a32e62a6b4cb082d3d5891d5489d4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBHLW2102151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2ffa9ba85dd7be19a974024c480dbe013959fefe3fb63174604423859763c4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:42:14Z), 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/GBHLW2102150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bd39eabcd4ea2e108c30361656c3a0712d76a62c4cd850c4e71b5e1c2323ee. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/QMBZ92367747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775de8b0b6189277a5caaba4d2c58525a233bb607a0154128ddb00ca60647184. Chain 2 (Bitcoin): anchored in block 957680 (2026-07-12T09:07:22Z), 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/QMBZ92367748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6ad33e28d2e669345291fcb7016fed8a9d0ba3b1e815fdfc7fe7ffc098c259. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:20:58Z), 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/QMBZ92367749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fa74d48d7e35eab03f57a542ba0e8dd5618ac27b62313c54ddbd56acc927de. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:10:04Z), 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/QMBZ92367750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d6b298ddac6c99c2819398569d61dcc56b2020c99865eecef4f10e0a5f105d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QMBZ92367751.