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 0xb43e480126a0d0a869ddd276eaa71d96675760764a2c702bcd8bfa61e39a12fb. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/49fbb184-6cdd-49d2-86cd-511c39b1f694.json and https://artists.proofprofile.net/proofs/artist/49fbb184-6cdd-49d2-86cd-511c39b1f694.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 0x2e71f44a26cb76943c4d875fef491a2ac0d5a3c816c8dccff3b1860de99805cc. 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/QM6N21794975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6b895ffe48393488593929e50193e2eb5704f7667c3e8517f59e8b2ca80bcd. 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/QM6N21794976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029b0897fbed1b8c4dc71f8eccbd168d5c1b6ab7accf6f49ccf1b238c67e5949. 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/QM6N21794978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f4184abd3832759619d0b29746591a4cf459fae1740eb50996ba7b66c6edb4. 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/QM6N21794982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b16b4d65bd751456a2a713cbcb3498b62db6c0e3c35118d74d7e0476e7c42a. 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/QM6N21794984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa23550e5a4c2f41a0338bef3cb761e58add4935776d1a3dc6de019a47c33cb8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMBZ91685490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f5ec0d0fa5fbb668a1ae3745eedcadcead88eb9b1aa6997f6d9af184f2b3d8. 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/QM4TX1739844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fed95a47088cde68a279bf2a7f19eb70bd7c7cc4fd30c267952d28cb410a31. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BGA471400855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc97a2960d852c8fdc315a093fa6ac5753567cdf5b7a0affb758c91bfe1e9141. 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/QM4TX1838086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd834d0e011b567572bb6969de81419f831098b24b2c62f3f6d3787704776eda6. 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/QMA5Z1400350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff605893ab7a4ada40ade087846bcf18bad26f286e33d7a56214e3f35cbed4a. 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/QMA5Z1400063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9428442163f435ef1935aadc51fef21603294ef448dd03eb9b54d93ef8e82d. 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/QM4TX1838089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f8fea8199d701c67c38b2295140c1bfa89cae23a7f16a301d5337cb9f15f0b. 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/QM4TX1739835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1d0e0435a98c836960cde22b87950381c672b3daa058ceb2bcdbcd33da637c. 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/QM4TX1838094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89c25f3e70c7fc39fbc05e7fcfddcec7124221a51a8c9efb528888f36778318. 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/QMA5Z1400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e4917bc5fae5a94ee209ba4a05e9b5da6bb021a769a533ca947d65148d8ece. 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/QM4TX1838099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4500a0a7894d7d36e021e43d74040d7949c7071afd6d95237296559f312f0db4. 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/QM6MZ1853638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575b8f7dfe769f906dba6b88e0f05ef1aa947821b71cf031980eb13d7794e029. 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/QM6MZ1853639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e4b3733ff784b2b943e9983e438a1a024956125f1031757a5c931a7647ac3c. 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/QMDA61831938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2894ab62ec3115bc2de05f9a5bc357f57671c38ab8f27e6f26de95ffd7e4a6dc. 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/QM6MZ1853641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91e78fe734d2598aa6ca913b0b028f84b780dcee277996c844840a57b05a135. 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/QM6MZ1853642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf62162a09923e19cf6f0014295fc9a1c518c482a029c543fed5c8ebecd9043. 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/QM6MZ1853643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743f0f57da834bf2716f8df2d560023cf368f801dab107b1274692b6765d3b1f. 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/QM6MZ1853644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a33cfec9491a2c72146ae589b9e851b70392fa3acf7dffd4c5d58d00e6e477. 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/QM6MZ1853645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3574a9943ba212a98c74b185cee7e5be9334c11ac1f4741e322e053df96e13a. 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/QM6MZ1853646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05dd27c0aa50ae26786a5e6469a8502473bc464c325057896843d167bdb7b7c. 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/QM6MZ1853647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b08e56ec1973fd1d60881e833a73242f3525806b33c424f709ab2142c781543. 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/QM6MZ1853648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc1ca6f2fa8c58bc593e27540f21928b4f27a98a29e68e5f6536b937fa0e1e4. 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/QM6MZ1853649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818ed4de319a97cef1ade681372bb698354f67590552d87568017257679adcbf. 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/QM6MZ1853650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a7e8f081c7c76a64c13c5bffe38240b4650b3bc07e8ddfbca8047dddba5ad6. 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/QM6MZ1853651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdabc6564f81d6019ce97cb09f46dfbc1209501b6c4b49e626d35122501bb360. 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/QM6MZ1853652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96457ef2c206126752c17b95bda6cb2c172edb65bf55e65f54688cc05a34770. 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/QM6MZ1853653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9462d92ee613d0ceaf6e7fdd87dd405d8db7db450e08ab16a981e832c45d49a. 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/QM6MZ1853654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67718d4115df4af4795e110199d428bac5b8ecba345488d7ef19930c91f3f73c. 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/QM6MZ1853655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861e77e69e84c880ae54daca2cd35198af049f24f4c8087ba78922d5c8ced2af. 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/QZK6L2121216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267366cdbd88c812d6e7e4d77201e89ba53b0d4dca4dd6885df55e6a178c4860. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USHM81799138.