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 0x3d56b2437253e16b78d5c304c2830e69a71e80a8b0ee7b394a14c9a2ba76b507. 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/31a83cae-18c8-4256-bf1f-362d72b8d434.json and https://artists.proofprofile.net/proofs/artist/31a83cae-18c8-4256-bf1f-362d72b8d434.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 0x7c23ae74284e7d429525260ea8f3c1bd0031c1c0f208fa4939ab1200412c3557. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/BCYN42400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf4d93dfa6d044184deee4677b3fb26b33177a2e651bcca49fc31ce50b6fd2d. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/BCYN42400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234d9c884afc8655cc7e1883f4800649d16db2fd62369b51cb2a70ea457d1175. 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/BCYN42400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad84e6588eedc0319f24a1d6313f6c7393a9b5c73c7803f970eabeacccfafa2. 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/BCYN42400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c23ae74284e7d429525260ea8f3c1bd0031c1c0f208fa4939ab1200412c3557. 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/BCYN42400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf4d93dfa6d044184deee4677b3fb26b33177a2e651bcca49fc31ce50b6fd2d. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/BCYN42400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0841cbbdc0b0548e8d9aa7ea72ac77a1fac8b0144b2c6bda352acc9fb93a9ed5. 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/BCYN42300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d65291c26b80788326e311a7e07dfb60336eab34d07dd23a8c47da66a4ec344. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:57:13Z), 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/BCYN42400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799814563acd9e262a18355faa16993e06ec62cdf522bbc1e217ef42e6477013. 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/BCYN42400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f7459d4366d1e7959b3ae51b7d7f73ffe5cba062a1fb831d87e84c242c5393. 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/BCYN42400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb917b945c7eeec04b029a01a34bae7f9e26657f714d83f3cbd34af4db579493e. 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/BCYN42500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1b4e38f18dd84ea700d672f580ad8bd8f3f4f6ee2aaaeae739d8810f3e73e1. 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/BCYN42300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dce2e7c05ac605959b69cd8dcd0646fb16230395a7feecf9b8c1cbcd9702813. 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/BCYN42500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad84e6588eedc0319f24a1d6313f6c7393a9b5c73c7803f970eabeacccfafa2. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/BCYN42400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c23ae74284e7d429525260ea8f3c1bd0031c1c0f208fa4939ab1200412c3557. 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/BCYN42400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf4d93dfa6d044184deee4677b3fb26b33177a2e651bcca49fc31ce50b6fd2d. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/BCYN42400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0841cbbdc0b0548e8d9aa7ea72ac77a1fac8b0144b2c6bda352acc9fb93a9ed5. 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/BCYN42300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d65291c26b80788326e311a7e07dfb60336eab34d07dd23a8c47da66a4ec344. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/BCYN42400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799814563acd9e262a18355faa16993e06ec62cdf522bbc1e217ef42e6477013. 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/BCYN42400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234d9c884afc8655cc7e1883f4800649d16db2fd62369b51cb2a70ea457d1175. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/BCYN42400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f7459d4366d1e7959b3ae51b7d7f73ffe5cba062a1fb831d87e84c242c5393. 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/BCYN42400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dce2e7c05ac605959b69cd8dcd0646fb16230395a7feecf9b8c1cbcd9702813. 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/BCYN42500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf621346624bcbd68da2d8debcb6ea3e4c222b3e7094284c32057c95867e89a0e. 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/BCYN42500004.