Brian Sumner is a British skateboarder, Christian pastor and a travelling evangelist, originally from Liverpool, England. He came to the United States at the age of 15 to pursue a career as a professi
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 0x0882a678782695bec9a49329f68255b47670661f637bcdad18b8af2114945c38. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3dfc18be-290d-4dca-be64-97ff151792f5.json and https://artists.proofprofile.net/proofs/artist/3dfc18be-290d-4dca-be64-97ff151792f5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
If You've Seen Enough You'll Know the Difference
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 0xe720cb2d22bfe27d047a9c84d2364291402b662d50f3d6408590b6506e167c04. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZTAX2487725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f08c75ffb1a90dcae6474381144a82238a7fed93e43b1e8a342355c89b43ebf. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-20T00:26:37Z), 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/QZTAX2487726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0485f6f94ca2a8d8adac9c216907f37842e47b408e0081860a46657f885e85f0. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZWFT2490973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9ba2e458abe3b5381e83abb828b8b9d352df0f36c3b6fb82079e5efd7332fc. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZWFT2490975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61f5fb33a46e9695f07bef4c0c87cedeefa974d2538c8cefdc444a86fe99dac. 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/QT3EZ2421876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367a496c1e253381b183bd46d5315bf47833ae31b7b0359c3d52cbd2057e3735. 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/QT3EZ2421877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32717aa4e93b87e43f2e3694cd14949b97db51911282e2bf0afd0e03c3ee562. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:35:20Z), 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/QT3EZ2421878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1425a7e02e07d26555e6f25f95dd53d4814acc236326aac3021cdfaf06919906. 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/QT3EZ2421879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd0e036c2633a1fd95cb58153802539e64ec807d1dad2e1e86d7bdfcb703f95. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QT3EZ2421881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f991f717f2933a96875fc915ebd021d015d1c3a34c6f231d158ec973c34bf69. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZDA72562458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9028955fbcb2c22537117d263a8b7ba4d36f944a7a420102768914adb1aca9c. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZDA72562459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e137042862fcfbda0e461a522c493d06a30f2121b62d20b0f758ee2e4927d39. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZMEM2558187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb530117c80bf7bdcb83dfe6e8bed90a89622ec0732a392744b57afee83080dd. 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/QZNWW2586457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620ca9b6cbc850e3266399eeb46f50d55cab607090edc839510ea148745838a7. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZTAX2559837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4731f13ebca3097365bcafc7b01cfb62f9a9569b2b0b5b03092c214eef8445b0. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZTAX2559838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f39138427e79c1b9cc73a06433fd75e8ce30a8e933eca0fbfa2ffd4ea7d2820. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:49:25Z), 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/QZTAX2559839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371ef9f70b9d0ef308055b9f11bcef4d1cfe609236b5589d4042251f5cc46a36. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZTAX2559840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1761122aadacf52a5fbc848de12ec663f369c2615612d372e075d23b69352a68. 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/QZTAX2559841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa913bbe9acfdb187437850d6a74fb48666abfdab095c52680cc16fc7dcea0001. 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/QZTAX2559842.