Radikal () was a daily liberal Turkish language newspaper, published in Istanbul. From 1996 it was published by Aydın Doğan's Doğan Media Group. Although Radikal did not endorse a particular political
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 0x7de1435aa3f12190bb7ca6327fe224492894b4116ead67c451c03dd8f4b9956c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c75e772-e5f0-4d4d-88a9-f19b76448fbe.json and https://artists.proofprofile.net/proofs/artist/1c75e772-e5f0-4d4d-88a9-f19b76448fbe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
İnstrumental Atmosphere - Boombap Season Vol.1
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 0x5fdee149511bb651812b51d4997119023480765e7d6e09b4ac500b6d70fe5fb5. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZFYW1916975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4eae854ad6bfc38157bcfef7c3168fe6af40c0ad3f32f93b638872c0b87333. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:26:06Z), 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/TR2181800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687b417ad29514cfb100b5e157c60527d74db43647b9c3e95ec12befd90ad0e7. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/TR2181900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f28f8da5c64f5b1c4a6ebbbc395f42a8ea0b21f7236f0e5cd87cf3e80129ce4. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:04:18Z), 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/QZK6P1925275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6dc0eb3dcef1faae74646b12047c62b38a3e881bcc082bf324d07bb782f70b9. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZFYY2019216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33173622b5e70fef343bcbf137d3135840213fdbecccd418443b3efad41206d3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:00:13Z), 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/QZFYZ2288294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef85023ad0296337ae77a86dbc7de7b76d4878fafb186ec5a77d80669b100d4. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZFZ72494181.