PGS can stand for: Companies Petroleum Geo-Services, an oilfield service company PGS Entertainment Plant Genetic Systems, a biotech company located in Belgium General Parallel giant slalom, a disci
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 0xf1f9e62600f975c28fcf7b1645430fe4ff75c4e23ad30f719eabbf9ced01c2ae. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4cd47eff-2394-4c11-bfd9-3675824afe81.json and https://artists.proofprofile.net/proofs/artist/4cd47eff-2394-4c11-bfd9-3675824afe81.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 0x6b922a25a309695fedf3a8dc19245043ba97cecd9a2cff664ba1a2b88b0f9067. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZK6K2577749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4088aef53ffa99d18ac8f94b3cd2860ccdb96145ae6c7135c20fa125b204ea76. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTAT2579782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771982c9ec91285c19c1b2a2d332bd7a84a5b3d2aae56e879371db2d65468234. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:16:48Z), 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/QZTAX2585788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9384349b4ce1dd44d37e439127ef8414d2e4063a2f1f858e8c2e8dc8c28976f. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:17:34Z), 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/QT3FF2566270.