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 0x47ab274bdfdda680236ebcf4bec4e1a6a8d7d17651078058d9b7516f919ae39e. 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/2008866d-4c40-4204-8637-f72229ecf10c.json and https://artists.proofprofile.net/proofs/artist/2008866d-4c40-4204-8637-f72229ecf10c.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 0x3f80415a08848156b7dc73b1221b7eb9f07d9b7df48d5e9739a0de80289b1c0e. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/TR2181007606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16253f86624679248d2033dc821e0d8d8c895cbffedb2a51191ded2e96014db. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM4TX2202772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092d29e71845c00f391d5d46ca2d2b1aa6acf8477e1ba4e317f064c43f2e8496. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QM4TX2202774.
Fenerbahçe Marşları 1 (Çünkü Fenerbahçeliyiz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521d6ed3118ae211d5ddcf8c68ca04a9454350ae5063bb49220f2c6b865fa0db. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/TR0941700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1621488a8d5b3859202e926054a1e9627d28d7a3c002a6b69a068218cb960afa. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:23:37Z), 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/TR0941700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522e5f0e2747e6affa7ed9c88ae5fb8a68709fd8ab645c4281a8702e2edcc2a8. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/TR0941700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807a193e786aca840f7599f850380046c8571df202e04c4afd710043613b7a7a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR6V82538891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f80415a08848156b7dc73b1221b7eb9f07d9b7df48d5e9739a0de80289b1c0e. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/TR2181007606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521d6ed3118ae211d5ddcf8c68ca04a9454350ae5063bb49220f2c6b865fa0db. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/TR0941700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1621488a8d5b3859202e926054a1e9627d28d7a3c002a6b69a068218cb960afa. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/TR0941700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522e5f0e2747e6affa7ed9c88ae5fb8a68709fd8ab645c4281a8702e2edcc2a8. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:09:14Z), 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/TR0941700016.
Ben Bu Cihana Sığmazam (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093774357f01ddceeb82ce043e4353ccab35d485e46d5a707ee2a4f81b579d51. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:48:00Z), 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/QM4TW2454102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab11942d360965af7c52680bcd3c48cb90c1e8d69b00912fffc3b58b16b57e89. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TR0010500064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362017c266c72858e90f3745a6dad3bfd6216835f663520c19b15e178c9a5307. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TR0010500065.