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 0xd56839a50f23fe6d7c429a86d180df8e5e1f1de65f4fb873ec35a752f0151ad2. 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/9ca1082f-d6e2-4c2d-8acf-88211b4010b2.json and https://artists.proofprofile.net/proofs/artist/9ca1082f-d6e2-4c2d-8acf-88211b4010b2.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 0xf8f096cc8daa7f8948f80eb630774d5eefa22c86bcab8f024a102410ff68fd42. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/PLUM72300190.
To Wydarzyło Się Naprawdę Oprócz Tego, Co Zmyśliłem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a1672742b7aed7cc283618281801db304c9fd89a944c05d73ce2ca0cfdd643. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/PLUM72300219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71aac4cee537c9592ee823431a9b3ab843fbe6aaa16ae0e82aac40343fb5f455. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PLUM72300218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f096cc8daa7f8948f80eb630774d5eefa22c86bcab8f024a102410ff68fd42. 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/PLUM72300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4650f5ac22a95a9bb028cc208f14b931a95c8f337a92378d0ef583ed6bfb46be. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PLUM72300220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdffddb592ba2604e2932c271b2726cc2264b08547ad0b87c30f994c7eadc00f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PLUM72300221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6f1e6bfe44a4a2662e8dc8047d34390c16f9da7a8943b2a378ebfe9a533d2a. 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/PLUM72300222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1df84b597ff255ddb4fc48c2e56c8851881ceb4fb742045354a684375a332d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/PLUM72300223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d46326612458a898846001c6249e0512e91c09d269036656da92d11138cf8cb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PLUM72300224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd5fa9d5b37300c1c03bfa1f242512991dd22c4a091a5b8a18f332bd3bdec3c. 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/PLUM72300083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171ab0e15bd32ece142bcba891f9d566cd00343755d17a384af5f0aef8b551d5. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/PLUM72300225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dead951ac56207aa523c647c2a4e99e5d54474ed1b008a128192df5061bdad3. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/PLUM72300226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25d3ec235df1d5ba455fb2549f9d7f23c0ed66a911416b195285362900a4315. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/PLUM72300227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0800d872cd9113edc3e9302d8741966d46c10ba9d26ffebd9a31747cc1f7c49. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PLUM72300228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4492cbb5faac05bb079e035279c3b2dc423be7168824bde4230a06077081ec10. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PLUM72300242.
To Wydarzyło Się Naprawdę Oprócz Tego, Co Zmyśliłem (DELUXE)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a1672742b7aed7cc283618281801db304c9fd89a944c05d73ce2ca0cfdd643. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/PLUM72300219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71aac4cee537c9592ee823431a9b3ab843fbe6aaa16ae0e82aac40343fb5f455. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/PLUM72300218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f096cc8daa7f8948f80eb630774d5eefa22c86bcab8f024a102410ff68fd42. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/PLUM72300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4650f5ac22a95a9bb028cc208f14b931a95c8f337a92378d0ef583ed6bfb46be. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/PLUM72300220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdffddb592ba2604e2932c271b2726cc2264b08547ad0b87c30f994c7eadc00f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/PLUM72300221.