Porin may refer to: Porin (protein), a transmembrane protein Porin (opera), a Croatian grand opera, first performed in 1897 Porin (music award), Croatian music industry award, first awarded in 199
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 0x56005574ecf601e01223cc7f02a7ba179b87600e4193895f8b6b30ae7764e57c. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa0be919-48bb-4770-8bc3-a8712d95adc4.json and https://artists.proofprofile.net/proofs/artist/aa0be919-48bb-4770-8bc3-a8712d95adc4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
CRYPT - [Vocal : PORIN (Awesome City Club)]
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 0xdaf91b02064b025a0db31846283a7b8c2d5c6b02cf5b730fe034fe9a59865fd6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPB602200536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f62c95310ee9ae4b894fc24c26bde23848f7dceda28d9c014f0e2426c7b9f31. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPB602102132.
CRYPT - [Vocal : PORIN (Awesome City Club)] Snail’s House Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2821c046e0eb33e6e249c2d622340229f7e25d95c332a5a45e397894a953542. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPB602203345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf91b02064b025a0db31846283a7b8c2d5c6b02cf5b730fe034fe9a59865fd6. 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/JPB602200536.