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 0x6c6bab08c01a913c5084754ef84df77492f4e2936fd1224e7856f56ff69d5834. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/98a36a3f-1162-4887-b224-706b55bb53b3.json and https://artists.proofprofile.net/proofs/artist/98a36a3f-1162-4887-b224-706b55bb53b3.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 0x332b0e9fa7fbf71311764e04957b9c5f93c21b7634f058e9763d024dd10fa067. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/GXBNP2411087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840aef594ee6a5ffafca4a0c5bc98fe6d674d067346f50bb4ad80d59a3b18ff2. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:05:41Z), 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/GXBNP2411093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5348123128905f4b6231582327c45e233ef5f474c693037b6c530d37c18b8d3e. 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/GB8KE2418608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9ed41e1d54039aa109bdc5590757fcf09c38ebe74f245b9b061682a2f18c5e. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:56:59Z), 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/GB8KE2428123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb386cf8ade93cdfa7bc49c8368c1b46ed66bb2c62800da816ebe583c78dc281. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:10:27Z), 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/GBLV62423016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4958b8483ed1084730fe574f1ad8ab3e7bff274369a32e6747dab28023131967. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/GBKQU2501804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5730b4a119d5136b370727973228bdd7a47a5cbb3b6963bdbcb5981e932a19. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T16:53:17Z), 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/GB8KE2428271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87ac2afb53a812236f55459a393cc3b0971d4196be88bc60c178fe64927bfcc. 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/GB8KE2500207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5761793a95cea24b343d7178b6c534472202d0dda1f033545da2727eaa980724. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:59:30Z), 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/GB8KE2500210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48b71913e3f65e1efb60de2e610e55e93e9f49f43436b713df36d74a3c72c4d. 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/GB8KE2503818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a26c7fa4ab2fecf897e5a6b6c9742817aa5e446ae02be8028f4ee3f795ed760. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/GB8KE2506527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5f9c41a5e5bcd641901cac99ce97a349265f34fb44f7fdc8181677afb9175e. 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/GB8KE2505402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0ea6e61e780f711b3a4c109598d2857a54de8d334967de32e215d04094ae03. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GB8KE2505560.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cea60c2f50f6012fc6f00b887d10557fbd6d120950e35426532197545c57e18. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/GB8KE2507630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0ea6e61e780f711b3a4c109598d2857a54de8d334967de32e215d04094ae03. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GB8KE2505560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5bbfebd426693d54d0ffd097b1c30619277c57f1312d5d0d1e04cc95b05275. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:50:15Z), 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/GBKQU2536275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb94aca01fdef371df7ed5158c9f05cd0c3e3802ba8367849593fc5f1072e83. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:50:45Z), 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/GB8KE2510232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38b1f72b9089238da646853d0fb5e0f1bfc296eec3cc8b29d16760e1e4a7a2f. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:02:39Z), 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/GB8KE2506431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f20c9ff1a215666f204f2c37798d4eac35838130c9be741c553b658303fdd3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GB8KE2515286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee24477dbf8cac98a02f56672d356750c53f1c862f7c3a862d08e4126a93c57. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:52:45Z), 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/GB8KE2515809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8cb471c218f8d9ad61fee3bd4f6c10834943b536e31c0341f5af38d441422a3. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GB8KE2519783.