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 0x28fb63ef69e09aa72cf51cbca2310da50dd82c6706700be34dde5d4249d28dde. 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/6fda59c7-4f70-47bc-8362-36927be47dda.json and https://artists.proofprofile.net/proofs/artist/6fda59c7-4f70-47bc-8362-36927be47dda.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 0xbcd5d1c28f6b5fb97b1da3274a432ea924eb8aa4270c77efad9e98e0e4386895. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTVM2366066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d73cb4655a7d3dc8c524f7e33f0a3ea1326c36fecbee8e74f4c84af65c06dea. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJV2461417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365dbdd4194efd5434f2d7e0b444732494a5f0f40b8a7cc45b2176742e9f05f2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BK4DA2413408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4301d911c69900f83189fe550b9268ccc26e77021653d7860633a961c607bc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BK4DA2407052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6ebc05835bdf8b6683c400cb684a048c15fcb7ce2f14e00dc2f30401e8fa03. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BK4DA2401071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4278c8586e265d5a019c510f5d8204dd8ddf871a66ebed3270b0552c2ebf5cc8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMANG2243319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b406fc254143981eb10fcce2eba99dc768a7978b55dc4e87cd5aaf4e8d0707. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZJDW2300093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6043a6993fac96e98dea2d6270fd49a4cc0e10046df25306c92a99a8fc7b6c09. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM3DF2287011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae413b2ceac0dc44ec51876b29cc81ac00929ecb15ad6cf16a97530f73dfb4e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZTPX2315500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd670a7bd0a6600114429564aa50b7df2b52ee4eca8d3567d1b27b5fa0b6b35dc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM3DF2273737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9697a44d66849bcdb6d12e9b158bf2936df30b6a233a52f36b9b7c0be3e967a4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJX2385101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7095aaddd77a79b2690f18014cea46fe705d98b733d72a537c6d1cf85bd5fe. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNJX2274054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde78d06c5252b5a11bb999bcb0d539065aeb488d814e9bc42147132b885f8aff. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZW9N2243051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef51c28849594a4bc8893f507642e2b49650fa4ae8c9f7720d54b13acc3312eb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZGLS2392485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4a5fa0c2b8e48801ee3682cd53380fa3964ac0fb3ebdc2659013c509b9a500. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZGLS2392486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2adad45a87ce951c6b5ceca22b6b51be51e7293d6820bb13cdf2f85cede7b87. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZGLS2392487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541e92ad9b955ed944d45fa0a7fae2fc0ffaf83a861eabf7bf2d085cd2c433d2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZGLS2392488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde78d06c5252b5a11bb999bcb0d539065aeb488d814e9bc42147132b885f8aff. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZW9N2243051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7095aaddd77a79b2690f18014cea46fe705d98b733d72a537c6d1cf85bd5fe. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNJX2274054.