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 0xfcedb5df9edb52f088c959e6cebb60540346f7bf663e5ee6c50b6e60a93981c1. 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/d554d3c6-2c69-4c01-810e-8e565eefdde8.json and https://artists.proofprofile.net/proofs/artist/d554d3c6-2c69-4c01-810e-8e565eefdde8.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73402fc3d08b82a796b32fd260686e1c31b788afa567a6589a1c7b6c127f6b37. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BGA261577418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76521f9c512ab000888af6dd456e9fd12941a195662e4518573d11a8623f8ba6. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BGA261577422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c56e838a639c599870656dcde095d3aefdf98913424c0a6e2f5b55e7f188f6. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/BGA261577427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a86aac5415050bbed9254ad39fa2da149b68ce9dff60b9679fc75c8651a1573. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/BGA261577409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685d9aa8da309b0ed04894dd1477a4ae91796927e633c528699de220a1b797de. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:05:56Z), 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/BGA262338998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24518d1ab654ff5b22a1e46fc94d6586f7ae8e2d6e0f96fb7ac2d2bfbae22d86. 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/BGA262338990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc7a676f34bd95833761a4f6e166b032840d5ae656a8fba1fa5456f5d56d5e3. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:46:15Z), 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/BGA262338993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800458dbc5778cf67d39a52c314fd31db4747e94e8418bd4693cae922d1b1972. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/BGA262339118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ac0bb154580a156a3fac92f1897a8f663313066618954e3da0eed3e4ea464a. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:05:08Z), 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/BGA262339049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f59238f8116d42d47885c380e3524def1c54dc4751f65c779d2bfbc08ceaee1. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T22:57:31Z), 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/BGA262339067.
Komardjienca-Drogajienca feat Orkestar Fakulteta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be3461930987f83b599ee0445c62caa9abb6dbbcc5ffb8a9484505839f5b914. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/BGA262339168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92081167993e2f3c8407b383131a1945099ef20b701c1dcf42a13c04bfd1578. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BGA262339192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93573c2121a9f42c9426c5c6d5788bc117d7fa25bd0e7a05dcd9603aeac0a2da. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BGA262404609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f2ff8507d6ac4f7889189d81a891d7195a78301c5d8147de4036f43183119f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BGA262521522.