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 0x1e4dea960eb8bf8b85093e758b6dde71ad2340af778ca2a778ef16e06bc4e213. 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/5caf717d-9b6a-4a3b-8d5c-327a0eecd002.json and https://artists.proofprofile.net/proofs/artist/5caf717d-9b6a-4a3b-8d5c-327a0eecd002.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 0x3a7cdd6f37857ac422cf16bc721123fe5a715aa8262162b79703ee3a3ddd61fb. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/GBLPF0601004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1100d6c176ef101008f9f7ccff41f12414c7ecdc2cb48727e6596c2ccb525a8a. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/ES7431731034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc35566b7a60137828d3c309a6b0bedde257af6277cfc70c5cad092f02ea723. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GBLPF0215761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea28feb2382637f6542affcfb9cfdf84e3b6167cb69bead1e363cd4a84f8091. 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/GBLPF0222951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d192a5512d08208e80a5ff276796605a03fd34124da986635ab994b508ffd4b. 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/GBLPF0231602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4029efac4c57964ec7ddb2c8601e906200b1a7691307f8179260c3bf28c36db. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:06:54Z), 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/GBLPF0233401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bc469f529953bf24fcbdc7d91323f5e8d3f2d48aeb3c861167a518f4b1abd4. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GBLPF0237288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118cd8d0e37b04d5f7ce1410e88fa8e4515d63138811366f8054745cd45f8034. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:53:24Z), 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/GBLPF0258911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37464e38da576dd151083a474449a29a11f874ea07766bc776a9fc178687a083. 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/GBLPF0601007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b391294ddaf7ae1da8223b77b6de191fb414732f668d2200fd40fc7b9baf0da. 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/GBLPF0210864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea28feb2382637f6542affcfb9cfdf84e3b6167cb69bead1e363cd4a84f8091. 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/GBLPF0222951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe1096f2cdad18a5dfe9c9dc35058f2a6ff52fc798d69444a916c52cd836dd6. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GBLPF0223652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe1f98d5180c2e6321f0cd11e96381912558742347347461d6704575666121f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:41:28Z), 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/GBLPF0224324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bc469f529953bf24fcbdc7d91323f5e8d3f2d48aeb3c861167a518f4b1abd4. 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/GBLPF0237288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89571bbd502d47535cb5741887f5f0d6889e01a5bf661208beafc78994f3f06. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/GBLPF0238967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91067c4795262f9e37d5ed7cda1ea5a35391b2a836be867402d454972c1c7bf. 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/GBLPF0240512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2520dd4e362d472edac667aeb3e05693c14387bbb014f8e6cf0efedb9ab7e8e2. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/GBLPF0256873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9c2f44047149753dea72faa3de0a9a5f86ab56c489df2d1935ac3ba4baf08f. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/GBLPF6667084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e564934f5b5a43f7dbfb953552de360a0df635c5da1882cdb9fbed084faff57. 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/GBLPF6678592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffdddb9910502c89e1e1901fd9877c91b741fda59da0b2ca348ec2ad4cb91ef1. 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/GBLPF6709176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ac80215144338ff3e8b634feda4237bb2e2210c5199bff9f00a3f6830281ed. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/GBLPF6769262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a34c1cd7591c7add9f477acb27b1121c5823c9aa2603367e58086c201961d68. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GBLPF6772913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634a15a2b5c29b9224ecb68bff93edf2b098838eba5eccb40959249484a4e209. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBLPF2520724.