ROZA () was a radical left political party in Greece that was part of the Coalition of the Radical Left. ROZA was formed in 2008, by independent left-wing activists and members of the Network for Pol
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80b9d07d7d2cfe83badb955e35257e6ecb171852b8416192bbac4c08a3eb53c. 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/325457ce-6cd7-4179-94eb-6b0759bd35c9.json and https://artists.proofprofile.net/proofs/artist/325457ce-6cd7-4179-94eb-6b0759bd35c9.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46350325f58129485945a8f53d1e8bb8049d6be774efab916e10b00a2c51ada2. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/FR10S2227375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485283c13a25e7a9ffa2746026d510d3bf35d8c44f24d82c6ff81335424dd1a7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR10S2286443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7e869c3c3def475fc4fc8a5b69ea4459b7e0ff4792836354bb902f62127e69. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR2X42293317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ac082901febf99a3eaefe88f30eb5a1fa70c52d1ee99433a0728186e804ad6. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FR59R2299832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c37c866748f8cd9c8ba07ba1d950a37a41b6bb1582b976bfa5fad6cf2ae87c5. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/DGA052371237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c39258455aec568a0c436413bfb341b1b6394710fe87a28339fc93cd7ac72a. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T15:41:47Z), 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/FRX452463993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa853f7a943e60186ae2daa25972165480137d9b5ca12d28068980592976bdf. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/DGA092429922.
LIMAU KIRIMAN URANG (10 Lagu Hits Minang)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5ba13f9620c95ff4d0710c9d105ce425d2b0b3bc818ddbb76c4b3a6bc4bd43. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR2X42576641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6567cd3ecc26f642f54181680666ecdfee86f97b946400adfeb84bd3f8ea7c76. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FR2X42576642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2607999e969ab6b69e914a3b92d17f35091463ebe9738e6e474fd6688ef7ca. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR2X42576644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b3db2b35a3725388cbda6bf5be373baa1ec407d5a2ffff1b5b777f0188faf3. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/FR2X42576645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8d930f4f5cfeed2f1f922acbb806c3e7666914845d0068adf4fec2dc2d5033. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/FR2X42576646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2378f9b3d766935cf63c37d34eb8fecb9e0517ccf75b8aef7485ba4ba7cb51b. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/FR2X42576647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df6ce9db93b9b834146ed6817476934984daa596c9c87c10fc07d0f1533acc7. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/FR2X42576648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a478f5804efde23c56b3da4a17caf34dd904cfe0f25346139f6dcd5864a784. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FR2X42576649.