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 0x78e2bf883c7bf7fd9d42c63b0ad1544fd48d1f71cb39a0c709eb34959ba112d6. 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/05537f14-f179-4963-aea9-f05df22ec224.json and https://artists.proofprofile.net/proofs/artist/05537f14-f179-4963-aea9-f05df22ec224.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 0x436e362c799b8e7f017987bc20808166c75a9afe41f34da1df7c2c2ce7b5fb18. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/GRPH11300271.
Ise Oli I Zoi Mou (George Sunday, Vasilis Koutonias Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd133cf12d2e85cdca29035d80cd599d09b894c5c14d85f6dc33afeee535c7764. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GRPH11600527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec2fdc8359e6f9440e59df0d9ded037071d8eb9842568014df26352ed9ef9d8. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/GRPH11300140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a69c652fc999d811392e7ae91c7af762c1aa153677d463fcd2ea3bd2e386cfe. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GRPH11600531.
Sosta ke Lathi (DJ Piko & Johnny Giannousis Remix)
Sosta Ke Lathi - DJ Piko & Johnny Giannousis Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd212f9b749f144cc40ab64585718b15ae009c7f71e462e24731b43c50466323c. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/GRPH11800895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee100178d76eb363ae32d9e4ceedfd086bcee4bbb53c9cc289da8a8e6040fb11. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GRPH11900993.
Zilevo (Takis Bougas / Ta Tragoudia Mou)
Zilevo - Takis Bougas / Ta Tragoudia Mou
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeed490329e8481c8fd251d347bcd099a4f62ea579d026ced4d6b39af0079678. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GRPH12101133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02c7593ab15139535872f3308105aaf397c779d0d3196b43ab7e9722d05aa7f. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GRPH12101150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42531a0778604ed2e1d1a0cccbcbe02917b8ad30f2a8811fa295207dbdae36d3. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/GRPH12301255.