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 0xeb64866ab1573dffb2c4bc971b75d412b0efeed08b688638fa01a9e993592def. 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/35effd03-57a0-4261-90db-60aac7c30737.json and https://artists.proofprofile.net/proofs/artist/35effd03-57a0-4261-90db-60aac7c30737.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 0xbb9d9b876ac6d3ab9a6160f6c487ad83426499a35881ad64ce5401d8cdd28385. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:01:30Z), 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/QZES91830147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64c121f1d545491221372ac145a302e8e349769321fe88708ed8cb3abea67e2. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZDA71995393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658f3fe06c52125c6690ebb83831c290a844b8a97d4ca331b167d39a16bebb30. 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/QZFYZ2004077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca18cb3f7009e2fd6ceb31eb55785862ab668e1d1af359d39fdba73ceb0bff7a. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZFZ62048353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2cfe9b3f98d8049e39f9574018532743968ab73c3da7beea608d8a84894c1d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZDA72091873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57d8ad5920ecaf74059a403fa382277152bd7de26f3258eb20abcf15426623d. 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/QZPLR2051409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57d8ad5920ecaf74059a403fa382277152bd7de26f3258eb20abcf15426623d. 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/QZPLR2051409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7841050bedb1d0457b5a04e793cd63ce62cff48905949d13397ac7b967ce55. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZES52154622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c35f42bff761c94f665985dd386910e65b35a60e93789c79e3ed72d3dec6f8e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFYZ2236430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c35f42bff761c94f665985dd386910e65b35a60e93789c79e3ed72d3dec6f8e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZFYZ2236430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a607eacd9973a2a0424f9f45b00498e72f1ea8828e7519a579c681003789c2. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBRKQ2214492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4bb72829508349d9308a6d45f9d6d636f67a6962e5a7d9add98449aaec72068. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/US3DF2408732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d5323e8d70eee227cbdcbb9ddb1f72754a841836b2c85f9f3b87c74951c37a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/US3DF2413193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c247ff79a26efd9ae08507cd02b3ac0bca9b00f971da84fc7cc03cb064880f. 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/US3DF2413562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d5323e8d70eee227cbdcbb9ddb1f72754a841836b2c85f9f3b87c74951c37a. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/US3DF2413193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c247ff79a26efd9ae08507cd02b3ac0bca9b00f971da84fc7cc03cb064880f. 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/US3DF2413562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a53d76718a4757c93fa4b93633a8f6c3d5a947e95d8f57dd34b92a84d0f39c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TLVEM2400813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470b02e6638050d5aa1bef7118bae5f4a5fdb09b173d0e6e6a86423bc0b70a40. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:59:23Z), 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/TLVEM2400814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849dfe7529db8a6cdbfca2622a253ad12d2d5d7bda20edbfc0913f88ed18838a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TLVEM2400815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae28c63812aa712b2b78fb45e956aa978ac53109e4b8541e9604f740dc8cddaf. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TLVEM2464654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900e04ed8a68dd9c53fb0a59a877489bff9ec76a2ffb17ff06d2c4608b9a6d1f. 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/QZHN71939779.