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 0xe9ce1e6895b279afce86ecab43afacd263ce476075058b19474c2af5f9e2fe9b. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/47763703-ecdd-43f1-9e7d-c1cc27bae9d0.json and https://artists.proofprofile.net/proofs/artist/47763703-ecdd-43f1-9e7d-c1cc27bae9d0.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 0x7595db7549a8c022a1fb438631ee1711bc96861bdadccc50f400ead8f2e4269c. 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/TCAHT2495150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f0b522926b5990d036632a4201d9edf43201c92ea0516cfb77691059d8057d. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/TCAHT2495153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0e0b20486c18ae378772254b324810c56bf783b7aa42a0d4d2d1da16ad4f61. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:05:43Z), 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/TCAHT2495156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91c2ab65f5eb8fd3b87d57687ffe7d8c5a36105e8293b2bfc67ca6082d813b5. 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/TCAHT2495158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d8ef9c227b8b99bcf48b45d009ba4788a5676b67d3cfc67b1b7fa6194141bc. 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/TCAHT2495169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16bc83dcdbbc450053e2d571b7cbc02e2b4b17a522bf42ca7ac0a0f75cbd029b. 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/TCAHT2495173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9637c5f3e8e7e9087ca4cfd345371679785d291240e1f30934a33ec127c4ee9a. 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/TCAHT2495177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb844a1a199d0862c78969cd8595a937594aadc82e12340614c9890c77578b7. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/TCAHT2495181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3898c51b439025a7a4de770073e406c8a14ebc0fd6c95d0c6f77d1f44f5ffe30. 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/TCAHT2495186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b967b9e481d44ffdac3d60a4639a3328a800299edd31e13249fdad1c428d0d. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:15:54Z), 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/TCAJI2541407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d8d0e5022d83633d02b73822a0f78cdd8ba1354a5b246ef080fd4a0792fea2. 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/TCAJJ2541456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ec7cfeb99d314cf2abcdb791fd5626133a47b3e0dd4587db8ce3f7cd595345. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/TCAJI2541496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84fd3de5a07a8c8ec41424213831415865c2d524175842d06cc360372e7c139. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAJI2541527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66079fa6ebf10211ed50c708386d5da2dc59302d2ba4c8e236787dc485dd160. 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/TCAJI2541577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2732388f6c451464a69690af6f12b8ca106188bf6a0645b7d601603ef03b07. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:10:24Z), 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/TCAJI2541587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88abe033e43655042b427e1d9f24fa50b0c177fd7e88aa71f107c7449767bb1d. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/TCAJI2541598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9eea45e65537ace8536546cfcf2c60071173288ee3b22173f889fb70ec7d475. 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/TCAJI2541612.