Stargard (; 1945: Starogród, 1950–2016: Stargard Szczeciński; or Stargard an der Ihna; ) is a city in northwestern Poland, located in the West Pomeranian Voivodeship. In 2021 it was inhabited by 67,2
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 0x4156c0d5241eacd610c9ce0c92b29974d158cc8d0b99d2a2d0a5ff3c178fce99. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3682f54c-c1b3-44df-8ea0-15595b045093.json and https://artists.proofprofile.net/proofs/artist/3682f54c-c1b3-44df-8ea0-15595b045093.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 0x4e461104c1ee7d72c00915fd4171d38b118df07a95e329505ac174c0c300a750. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USWB10100119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168541f5f3c92d32f2e61e13d10f6473cce830d425a0e598bc566febb2361f27. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITD541201884.
Theme From "Which Way Is Up" - Single Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9202c6f4d7b9391ce96d10395c455b614f1ba8bd0e3f8d41569b71446f39ab0. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USMC17706914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a82798d073bf3c448eb0fd28a8f0267ab9e063fcdc9cbe7b47be702a94de22. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USWB10301785.
100 Greatest 70s: Golden Oldies From The 70s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a82798d073bf3c448eb0fd28a8f0267ab9e063fcdc9cbe7b47be702a94de22. 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/USWB10301785.