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 0x3b863dd8576c812403adc75284ba69ad5581b1015cec2964c0012a965bc72fa3. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f65e9a98-361c-4fd9-b510-ac4c61e92684.json and https://artists.proofprofile.net/proofs/artist/f65e9a98-361c-4fd9-b510-ac4c61e92684.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 0x0969d1cc30310c0d3d05f9f767977e3be7d23473711cf1198f1ef10aef648b6e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USASN1950001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67cda20a451c17772e373a7f3cc147f8dd0e51dc4aab9a8a262cc63bc8b4af5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USASN1950002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e046d5b7374c82ba85c6569cdcc37c80029cfafb669a13cf345679ae96995b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USASN1950005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe500d61d3475656c952c79703ad37bbcd7b73e1c420ef252cc4581181ab5ac18. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USASN1950009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf2c9c04008734e516ab8691cb8691f187b025ba48cebbc182a5aa0c35a6987. 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/USASN1501550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef35800b73d49a28d58a582eebbda5856fcdceea8fc5a294de780d392365235a. 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/USASN1501551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51cfee094cdcc5375e1d8b543f8486f2a1d865157a930b43defa47b6ad7095e5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USASN1501553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a37e3e2c4ef0ce4ff397bf9bb0ac64dd8019ab2f306e000b0175bf0e1e2370f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USASN1501554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81897ee19f0a0edaf4054c7de1ec780363a051195c2bbd2014c1f35b614d5e5e. 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/USASN1501555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a880996ceaa6fce9c76a9ec66047af2de12c5f71bb5ac143bc8619220436838. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USASN1501556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7165591be83c6947efa96fc2077dde3929dff1ea38fac39ff357070c4ccd6212. 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/USASN1501557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeee656b0eefaa67b5c389f06463734c784a3e88057aab298b2f68867f368547. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USASN1501558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7a20ae5654ef6cd76be086664d634a804c86d05b70b061222896d86098ea2e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAHM2355182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4b680f13858af959720e3d4c4d0fca6cd27feb6dde65b8645c506032029efe. 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/USASN1815008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5057821b9a78ca198ba9c658b5e0c2d918aaea0dfe7972c037b7f82d9897b103. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USASN1815009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c805f7fa2949e32c420b54161b5968ab289ef556a81ed6835c55ffd14ef549. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USASN1815001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf820ab85cff368b8c2500291748958f0ef15da61e0d1d698c018598d63c41405. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USASN1700814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81897ee19f0a0edaf4054c7de1ec780363a051195c2bbd2014c1f35b614d5e5e. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USASN1501555.