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 0x0eb7451b5b61e488e3d7efeaa285c33f9975dc2b2bfb4f6f5a2d6ab73c9697c1. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6c5d21c7-15ef-4caa-99f5-66178382343b.json and https://artists.proofprofile.net/proofs/artist/6c5d21c7-15ef-4caa-99f5-66178382343b.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 0x48c8447ba6eaae9b8918408fa56f834b6165fa814b30d4c0fcec2d1c2c3852c1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES64E2309974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7833121840eecdaf1c33261cba7abe7d61d3459d9183e48f0e67e893339397fa. 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/QZW9M2202794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8808a69cef40ff67bea28feac788ce21baca5f8b9175e964a1b5c55dab40ce. 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/US7VG2599940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a3b9e8c9525458ec775a8ffb8e181c3c450c25ffcf861abb0dc69e00f258e2. 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/US7VG2503457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66bc1fc61321fdfeadeac85f3f72cc1a0aef4565ea5c9a458ef5e0dadab39d5. 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/QZNJX2402977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108fa28d9c4c9d7de5eb5fe792a825c5d342796757e5a937af7d8cb01662a4ad. 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/ES64E2483827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692a14b47974bfe417f984a2d7b9e085c53a467e80211bba042a7533a1558848. 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/SE5BU2493801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde82b5497d0848495188f4cf8c9ef86dc2cea64d19ddb77b147610f315b4e24f. 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/QZ5AB2458916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe800bef5178b13f5f1905d12f0fa3a005312e9100d2a7c661334bcf24aa4c54d. 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/QZTPX2396168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a81fddbf6a67f2e0ab34f3312050c26456604ccf7421597c1a962a55a71c79. 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/QZNJZ2347737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc533b0e7895c13ca34d48013fc040ceb949eb2c28a7e32c6361681636b3d2a57. 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/QZNJX2351143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e5756baecf97a213f639a323061a284d164e72d262d024ac2ff1073d27bdcd. 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/QZNJV2128627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77e641b8734888d1c0c5e62976043da18c175fa120f96efd9a2fe95d005284c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZHZ52175890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43111603556a411ec747574dc18c0b788f975a693b6e9bf3392f8a1f9de922a8. 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/QZNJV2028314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fab50033f7b1ca3d0ae1de0d9387087400a85ddeed290f38ee2d304c5be75f2. 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/QZGLM2589823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef67cbf377612ba81d2a0f0be50aded126099c621bb6f88849352f3773002a7. 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/QZNJV2535292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fab50033f7b1ca3d0ae1de0d9387087400a85ddeed290f38ee2d304c5be75f2. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZGLM2589823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5216302d291a91ac2e934a5a101d3f62676c4d7e2af3f92b66a98fde82f617. 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/QZGLM2549675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692a14b47974bfe417f984a2d7b9e085c53a467e80211bba042a7533a1558848. 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/SE5BU2493801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f92ffd3afa5c19d6f5ec69631de050e10bce79ad968105cfbbe10bfcd391f4. 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/QZZEB2360993.