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 0x556430b0ad26c592ba56df200d76277123c4ef83be2dc4c2187305f5e4a885ab. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c7a2729-e230-48b5-a95f-ded767f1c472.json and https://artists.proofprofile.net/proofs/artist/3c7a2729-e230-48b5-a95f-ded767f1c472.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 0x71f4bd52d1ca0727239df6c1c7156de443991959eb75e643f6885bdc472b9343. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BCO3K2300162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1588d1e6c91c212f253f752f5190e47dc55ac8ebac5f9258dcee18dd83543f22. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BCO3K2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c95f07731bdd4f67850316dd0db225a74964da4a228e65ba0df3bdc15459779. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BCO3K2200121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88561ed2d7aac01461e6af8964c90e932f20419d40d055a288bcf0d164aae7e. 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/QZNJX2489461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae82c3f93397749077279e417041165ce674cdf955d25df6d257699ada191fd. 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/QZNJX2479665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380efd03664914e2b75e5943943c549997b573cfed0fc919eaa7e81c1c0c356a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZ5AB2435795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c41a68ffd8d206da764bc25798c9561756210987903ef1b5b696be29512f751. 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/BCO3K2400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e29f251aa14a4d4157f8a12b67768f309cf9cc1f08fd7adef3e6e904bfcbd3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BCO3K2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd4cd6dd8e228c6cd77ed40c24375dc739068325bed77437b75f429494feaa3. 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/BCO3K2300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d9ab28abebad3747c6656a63c24c5da87d6220e9b1455f20e856aa8729a27a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BCO3K2300083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5b83cffa361bcf12d6514ce687a5f45f0aa461a58afe78cb6674790fcff1c4. 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/BCO3K2300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e70222720868a21aebb77e74e0b64a1b65807ac65f92f4a3183e6284eca0ca. 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/BCO3K2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa56a0963f64f2851cc1dc1ea21911f2e83965b655f571dd4844e183d460088. 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/BCO3K2200116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c95f07731bdd4f67850316dd0db225a74964da4a228e65ba0df3bdc15459779. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BCO3K2200121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76ead51f4cad7a0c6ca2653af4b4e64e9f47662441b7fb42c0b3fc549459b2f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BCO3K2200094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757a272e48af22abe837a83850f622ab9a5a4f8deb3e3cc9316d5dab2c40a9bb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BCO3K2200073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53e1bc0cf1603b7f760329f54f950e01419ccacb37f340f65c781f658a3bc59. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BCO3K2300161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646b6626b986ef6501ad668271bb9f00325fb3c3de38c94db3b14344e5c1ca50. 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/BCO3K2400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915b56878dcc0db148ad5b00329b84bf1641871b028a2515e2f1d3b4a35cbce5. 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/BCO3K2300076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43578200f93a436603ea39484216169c690f05b36148b059c8651693d25d51ff. 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/QZGLM2473867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb5a76c5adc401704095e63d5c1a7a3ab990d6f1260e6140c202099a6fe8786. 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/BCO3K2400123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b5f173ded2ec8abc695a6a7fd873049ad26ce3e147f82efd993845cf5a9f57. 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/BCO3K2500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55cf624ee47ebefd67db824fe53054aafb1b8c2925cd6b7c18b86aba5944aa3. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/BCO3K2500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d4dba3d7adc6ade2097c8c25fbc7bdae52e7f0c901c244b295fee9d919a0b6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BCO3K2400178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f4bd52d1ca0727239df6c1c7156de443991959eb75e643f6885bdc472b9343. 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/BCO3K2300162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646b6626b986ef6501ad668271bb9f00325fb3c3de38c94db3b14344e5c1ca50. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BCO3K2400019.