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 0x312b7294d88b61fb6c69c4b98374ef66f26889fc11552cb56e19ff4c434fe9c1. 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/9f484300-10ca-4cb9-bf9c-dbacbe1345b2.json and https://artists.proofprofile.net/proofs/artist/9f484300-10ca-4cb9-bf9c-dbacbe1345b2.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 0xc40fc7f5fcee97fac78a7c5958942d24df9638acb85020555e6d8d84ce79fb24. 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/QMDA72207502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4f699c05f41eaf237fcd2365a94fc840241b7f6b05191c474fb4b9a73298cd. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:59:37Z), 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/GBLPF6723049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007ff72936ecb5dd437674c8e392ce41e22aa29ac13dd8ff0141e3bca36b4da7. 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/GBLPF6723051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187005a3d662a71cd1cdd71b99ba89acd4da518325734adf8afdefba2d4acbf4. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBLPF6723052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bdc7c8dd94d2d0b638e4321fba1c6784b505b27b05dd3663183d6a4a2348dd. 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/GBLPF6723055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1400cc593faaf429a6e836bb810120ca2828d69e99b88d6999f49fbb08e3e808. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBLPF6723056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcacd3b652064a734dfdd4d5c60da9371a5814106f8d6d9c4d9fde2825b055489. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/GBLPF6756947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b51993d58eae86058084ade37ed667ea700cc56b1a248972d13fc3b1c5eb6c. 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/GBLPF6770894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7545957274fb4d1c203a858549cdb6ec7b9f032bc9e76b150f9f39be30cc1a11. 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/GBLPF6772754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafaad687026ba32ee5c2a7603209e6c2235c04874d9fc5446f94dac435a3e2a. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/GBLPF6808789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb462382ab03e1da2f456139f0e11d9a942eb914aaee3167350a09c8f240513e3. 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/GBLPF2510796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4b3fb2c150d0142e7763553f88b67c86ecfc80194b5ca57c13afcc995f0269. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GBLPF2516289.