Syke () is a town in the district of Diepholz, Lower Saxony, Germany. It is situated approximately 20 km south of Bremen. thumb|242px|Syke Town Hall thumb|222px|Syke Population 1961: 16,203 1970:
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 0x980aab53b3ea0cc61fe797351b21e43cc78bd6a75dbc55ea8cc48293f8622c55. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af06036b-75d1-4415-8b58-d7355b7547d6.json and https://artists.proofprofile.net/proofs/artist/af06036b-75d1-4415-8b58-d7355b7547d6.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 0x71abf688e16abb888ba2d458968a3a1babdf320c3a18f4fd5ef33ce1c24471b8. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:17:14Z), 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/FIMGM0700057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1336ebec128e61bfeca13ea7db1b170a3ce0853e7d3dcd32bab43d58c1d8ca. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FIMGM0700061.
Meidän on Täysikuu - Under the Moon of Love -
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7caecd3045176d701c35ec1b9dff19c730fc6b4499a20c4d573e26f4cadeb4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FIMGM0700063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72abcb0049443b161c855bb5cf51df6e49c60f940c7a0434606714861504435f. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FIMGM1000027.