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 0x39e23bc00067a727b8cd7e80fff0831ea3132745114eca1eb257ce391de6d9aa. 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/5439eeda-f93c-4aa8-9091-38ed4214a837.json and https://artists.proofprofile.net/proofs/artist/5439eeda-f93c-4aa8-9091-38ed4214a837.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 0x666b63e1d52181781200660c5135c505e84e4be049f38cd9edf3cfb5557b2bea. 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/TCAIY2428200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8030e94a8f32a5b72f912cd34ebe7a00d841b581c2bbeaee217297f8c0a18142. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAIY2428147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3e58e2a53f1a5358e6b0f6254aa8374973275984be653e0bdc0345b42f6e97. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAIY2428120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72e4aac32c43ddb6a564de1eba027642989949efa1a06a7500908f9b0fefa60. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAIY2428324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80ad0dbd19fd0f7e01b7da994ac7e3c0f2a74a3cbc918dc3244608b9d94a874. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAIY2428340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1eacf46de448768a110dd825ec0de1e06363c8f380bdd36f7e697ed32a9d91. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAIY2428237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d022dae98e1a29281e6545c04c094558f556c847c57c0184cb96b80d40ad3d6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T03:01:23Z), 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/TCAIY2428357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45cd1b9496c95de505ca8dd59387a0b5e61c4040ffa004287a8e6efaf1c14d5. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAIY2428274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f594502c5a73baed6109c519fbdb7e52fdb5ff1ad4ed5c897cc96bf5c074de. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/TCAIY2428375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9129193b57d5fa655312dd95f2241c74b131d8e6aea4249871dabfbbf30ddad6. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:04:40Z), 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/TCAIY2428134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef384a6bb5b3ad3c67395b7f7e6778d9f7309cf01dd203005dbcd86ec39eae4c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAIZ2428254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f62da1e4b19a77ad1b9e794d9e376bb5a6d0325d47c2e6a5a46e21ab40f82f. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAIY2428300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe09659863fde00ff89262ffe01213f1b3ecd60ac70e934ddeaeec30d81e4c55. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/TCAIZ2428223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa994218a34a32e845b156a5bea9c1cc45dcf47ea9c67b4a08d5fc77adbe3ad. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAIY2428164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d1cc3cad78ed554f8c215059e32288ca8d6b8d20d27cf94dcea45960e5ba96. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAIY2484517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d1f0d98dd76bbd95154e6f3c1e428fa5f22a74ee806769de40d61877e4ae4f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAIY2484527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5059f0073f0d5fba26ccfcebf6cf6d5926084640c1147f79cd3535af93003b5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAIY2484424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837976d5fe662bddba10318da5bfdcac3ec780a974425a2548d0d706d0344395. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAIY2484408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ef29b76fdb023c47608cf712273dd801e4ad333f87987299b516f5acde1917. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TCAIZ2484436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0d469d0781b6430bbd87135f6c67c45a5248a07becb59b5cc9e4a3723fa15c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAIZ2484496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e50591018fc93c7f9dff6827bb95420529ac998fb025012b7cd714e5ba82ab2. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:21:25Z), 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/TCAIY2484547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc184a5148c5fbb34650ffed4c2ce934f4488120b7fe046190a00c548d6cb4cba. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAIY2484475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876996381fcf17ec2c2fe599492423a7f4c2e5277e5033b48bc313e1d55aa408. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAIY2484458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea15021e5791166f588eb9249b15a377a90c235671f5463d8dfdbd29c94a4827. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/TCAIY2484399.