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 0x2d26496e0a300cebb5bef2c9ef20a5324b2e44eeb766c3eba6306b33fd11a4a5. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1195b5ea-ed0d-4064-8df9-c609a6b353c1.json and https://artists.proofprofile.net/proofs/artist/1195b5ea-ed0d-4064-8df9-c609a6b353c1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Art Is Done (a Xmas Song) [Radio Mix]
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 0xa0b41f87231b09da867bf20239112b922e8ff868965130f41cc0dd6a8c1cb544. 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/DEAR42063430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfd6a62f6dc5e2095454372bdee3185097efb7641470aab03ad16256b83de1d. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/DEAR42314228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2f5aa811b348bcb8183329d48235bcc44be55b81e4f8e302e69ed96c935c3c. 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/DEAR42290678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725113b11318ea738f0b5b62c55435b438235513360df8c27d55096f4764150b. 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/DEAR42309925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16ec79c717ac6e3b5caa6892ad34b5fe9425eed77c7d65c3016281483173283. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/DEAR42313391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0d6eb541da6b5f58a02dfaa2cb8a7e119355d0c74273e7576208d392ad7bf9. 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/DEAR42279289.
The Art Is Done (a Xmas Song) - Radio Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3374141172ae7b598e6588279fed0c1e49e7b589d022517236ec4c7492d9a153. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEAR42258825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9574eaea689d591e23f9b9db7b1e59d26026e157013ee6b3d9e3e3f7d1521dae. 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/DEAR42310684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7128917f5ea30569245180a55f62b59bfd1087c0c2c227af6cfafac6e956827. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/DEAR42311055.
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 0xd70341ee17754d528a3aba1e617884bf9848c56332a376064f8c7ae37d3729b9. 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/DEAR42311258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3005344bd8071f509d07f0f9b6e56ceaa715d9482827a4b59a4fb14d8cd46327. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/DEAR42318475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f45fe779aa1eade96a997b4579df822cdfba004e54f6bc07196756316dfb452. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DEAR42310104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efc9cd9dbfa9cb295c1b4b490d77cae56a271657c783cb2e05d4e82e6f78407. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/DEAR42312824.
Live Life - MMXXV Nette Junxx & Martin 101 Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac3dd9f056dca2f5279b48ae8ee6bfef7f25688dae7079bffbeb33ecf721da5. 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/DEAR42516664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462c57e3f9d592a0e9acab0dbef768c6e33a946e44aef966d55a72f4e9a7224c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DE1JN2438933.