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 0x9faef99d646b922b18aef69985ef2aef1d2207aaa3fc1b2c09e9d90abfd3bd43. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b959dcf6-486c-4f87-b145-2e6d7f32c83f.json and https://artists.proofprofile.net/proofs/artist/b959dcf6-486c-4f87-b145-2e6d7f32c83f.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 0xd14795e12b14082394ca3e5a93533a7fb23541ccde9a1161892629a8d17de501. 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/QZDA52202350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef39f93871efc30a3bbd1e4b1620dc34b5a0a421e54866f16792b9a415c1b8f. 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/QZDA52202352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb379b7623af47f62424b6b8303241aec7501651488898ce1e084f89139993a5b. 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/QZDA52202354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c76235c785632ac4e095152acce2dd0bf95c209f78740941de17878af09b96. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FRX452401656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e544757e33f81b136ad996fadb5b6b7721ae397f0bfd4fda826090ca4954ca. 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/FRX452471771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42219e18add6c1c22d32c42bd01da21858809603f59b3e840883a2578a9b365d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FRX762485635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639e4e3118017ffc31bb297d840e087669ef992ad9f635b47348b70ef7a8ec67. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DGA062407033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a4c2eff883fd2f2d1e2a865dbae2e6b48a91179e37d8469edbf389bf3cbb31. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/DGA092483215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e4ac1a954b00c20a8df6ea0ce5e5d15c724d4abbe0f613627b7bf3c35d367e. 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/FR10S2505221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e3f841d044f27903d9becaaa937db3a0fbaea69940e8d12a157e8b1e9df02c. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:56:53Z), 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/FRX202569228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42219e18add6c1c22d32c42bd01da21858809603f59b3e840883a2578a9b365d. 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/FRX762485635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e4ac1a954b00c20a8df6ea0ce5e5d15c724d4abbe0f613627b7bf3c35d367e. 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/FR10S2505221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e544757e33f81b136ad996fadb5b6b7721ae397f0bfd4fda826090ca4954ca. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:08:08Z), 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/FRX452471771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639e4e3118017ffc31bb297d840e087669ef992ad9f635b47348b70ef7a8ec67. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DGA062407033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67deb418d4e58ce004cc8fb0f08265726d3c7292d49e0a0c791adb21fdc04328. 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/FRX202569230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bf7057155394ea2b406255c2c5ee336eb4eaee5564d5a7cc122a822563caac. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/DGA0R2462895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a4c2eff883fd2f2d1e2a865dbae2e6b48a91179e37d8469edbf389bf3cbb31. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/DGA092483215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe650356f74a538235eba86f5bb7224edb4a2f7c9d3e4051ad9c15d3b48ce095a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:07:03Z), 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/FRX202569233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66b3c2c57bfdc5963ccd0a7d2c57ecb9ad72a7fe2d9a66dc869aaa9009aa634. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:42:23Z), 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/FRX202569235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe585030775a712bf6d4755a71d4245a023474a6c46eed384489c88e0d1d87ffe. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR59R1908198.