KOA (short for Kampgrounds of America) is an American franchise of privately owned campgrounds. Having more than 500 locations across the United States and Canada, is the world's largest system of pri
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 0x8f371f899c5107c052e65705f9900a6f10d05ffdf0278e7d5e60b0a32b4b3d61. 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/045befa7-6a64-4628-9e31-a5d84d81769e.json and https://artists.proofprofile.net/proofs/artist/045befa7-6a64-4628-9e31-a5d84d81769e.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 0x31ae155779221ee38960b3ad54e8597c4acfd70bf51a077f73b504a07e933e69. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:33:44Z), 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/CZA750115901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177260aa9a94e2d7786d999dcdf51e9365759734244679905ac5984c3b543424. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CZA750115902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc21680e74cc87ed00db5f3065724604f9ac9b78f026aab9b423a5059c3400c3. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/CZA750115906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918d51d4b61cc00266d15cf19ca85ba6cd2be49a95237fd2fe91477d07783973. 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/CZA750115907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99f5f09422bda307ee3dd5a9bd5a0cadc6504434dcecc6ceaa3abdd91e14ea3. 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/CZA750115912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd818c30ebfc20c665e7196e5576015c03f21400e16016cc6a0838bd4f0fa370b. 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/CZA750115914.