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 0x5d90e1a873f4f8aee4c089135215be0fe0ecbfc514ba71854a389aad4198838f. 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/df2bf208-ac1e-411a-bb0f-8cafffe6e9a2.json and https://artists.proofprofile.net/proofs/artist/df2bf208-ac1e-411a-bb0f-8cafffe6e9a2.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 0x3364dc32978ee6d38a4e555965408b9546ac75cb9cfe129ca7d94483d420fb66. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/BRIMG2205000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fac55598bf2ffefa6f699d5e7355819cfe4169cfd65e7a7291e89e10fa7829. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/BRIMG2205001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3f16e84862991bb54d1fa5811dfa973fc4c61b7c0459d50bb48aaea88fcf16. 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/BRIMG2205002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd8429e3a35459ed0fae0c19c8ce50ea0375b674502be7cd8c0fa86354dcded. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/BRIMG2205003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba77bf3be807480590c40fb3bad48c5ba56058cfe776e9af7ccca65bd2585f7. 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/BRIMG2205004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa70f618a28d196bcb25160b95a02aadd39d284e9b085861e6117b214a805da. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BRIMG2205005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bb87a022a0e083eaa3234e19fd353c01f5ae25284689ddf4af3472bb1aa2ff. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/BRIMG2205006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba43a3b8e42de4774876ba0113469f1630a7a11a81b08dfc451cd0c4b73f7a8. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:46:24Z), 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/BRIMG2205007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80e18736838966d5147a3811edd8a4ab83587bc5250feaa98cb666af4db78fe. 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/BRIMG2205008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62047f8c25a0ab4cc31772847f846dd79dfba2f9401c23ae902f2e017eb617a. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:07:20Z), 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/BRIMG2205009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730b96ba851637ed56d6b9b0c534f1434fc1517bc63211e300f7442afd7eb002. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/BRIMG2205010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a37185aac58efd291b20573d9b0616d1ec8c17e88ef92fd93852c7b6e2da5d9. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:24:57Z), 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/BRIMG2205011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13e9658d0b9bbf108b1fe4c81c6b8c8b45766e7c6d8919adcee60ae661b677d. 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/BRIMG2205012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf105afde35b9626b35b28f7c9562d1dab944e7acbf8fe3e4953213a844aed57. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T03:00:14Z), 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/BRIMG2205013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba13b3fc042633c291df8318f5d1216aecb59cabfcb997b9d7c33362a4e04689. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/BRIMG2205014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1172fb3417a4af717c82bcc1dbb4d25d51bb0d27a0ba23fc6f6389178825ded. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRIMG2205015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132f6f36f281dc5a311bc147cf7db97fa0448eb81be8066b7008c912a154542c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BRIMG2205016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186d55db1b235be0f0f48dabb848c1874bb1ee85b60ff511a4e2904490ecb5db. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/BRIMG2205017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1493ae0449cabd747cf9a5efdbddcd4408c3da68b1d056eabb316657b1a048e. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:48:36Z), 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/BRIMG2205018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe401327c988843ddb9e922ee43785e075401ff83d6a20a7118bfa5c300351e26. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRIMG2205019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925d86e5446ae91725f071e2272e20ce68232640b308da72632c41ffdf0102cd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRIMG2205020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cdde8802269c932061c72f6777654db49f326c87091cf9625a9ecb095a4583f. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/BRIMG2205021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b6027aa48e081889172ce3009388a61889933f98ce6aaf3a43c44bec574b28. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:08:05Z), 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/BRIMG2205022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80586720d95c7cf7dd221dd6ff10060ac85d9dbf7c2adaf8d97fe0dcb781460. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/BRIMG2205024.