thumb|Luisón, a variant of the Lobisomem from Guarani Mythology The lobisomem is a creature in the folklore of South America. In Brazil, it is usually thought to be a werewolf but in some versions is
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 0xf634ac57e9eeb764c3a93c9d8bf27061fd5024c121ba5edab1b70f8a4a12328a. 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/9f03253d-e844-4e0e-a48c-6da73498c1f9.json and https://artists.proofprofile.net/proofs/artist/9f03253d-e844-4e0e-a48c-6da73498c1f9.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 0xe1aef9ab0d1d6bff2fe24a44331bf5101013cb08a3344dead132af3a5b8989fe. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/BRUSA1900597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2a9eb62a7dea5805ec5cc170bbbe9fd3bf03e893af6c88a4cbc76ff6e931e2. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/BRUSA1900885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f60b18e93485612e6e7596b9331f00b666a273d43025cd04304014786eff5d. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:22:52Z), 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/BRUSA1900889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d609c292ada4f48afc9f65f49bd37f8a56623d86518ebb581376869095d17ba. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/BRUSA1900503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37bd26c1aa9bc08ddb7890ae10a08d07340934624bdfba82f72f04c17b47a64. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BRUSA1900514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4d96f4c7bb4776260aee68b7b342663d57217153a7bf9657b16f74f9305fa2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRUSA0300605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f1bd748739fc4ba56dd7dd62bdb0d2353c4387a37100cea48f05eb6650babe. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BRUSA0400403.