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 0xe864b5a806bb187c7db403275d9cc8e38954a8fab645b551620ca722f0a7db01. 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/58691900-2b90-4fb2-bc8e-c01053103bb5.json and https://artists.proofprofile.net/proofs/artist/58691900-2b90-4fb2-bc8e-c01053103bb5.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 0x296a6452b410ce7525b34d22e8be3a459c95a37808268b5b4936af4670150e99. 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/CA6J01420001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d009abca9b5ecc7af9c77790d12fe16c0da1fef5df68ee524436e8c116f896. 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/CA6J01420002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad7b59c6710e6b7e81042641eefea76704b8c25d09c2de9f4085c5629769960. 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/CA6J01420003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5fce0361402ab44652ceeca5cc355a01315e391feb473b482b687dd8d1ac1f. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/CA6J01420004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24c5deef9d9b8d9b883441213b0eb6eac7668e13830afa097140c07af3d8b22. 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/CASB11610301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fcafa3f2942e8dd5be3ae9185abfa42be8a968f5ce84a5ee87192e88e7ab840. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CASB11610303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c13fb7fefad93368c9de55777609e766c0e6012f69ee51fde763b877d35f58. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CASB11710801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc0d4e3ec35bc7becd776398caef67ae97ccb11cf0a54b96e594bea091caead. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/CASB11710806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c97ed96ba07b34320b5fed409f0664430b599bb98c578e852b37801a8afe31. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/CASB11710809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b8a23175b01424d5b4e413039607ca1fe58c4384ea8c4804411cda6def6c38. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/CASB11710812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e1615cf4646b3074590af390b2cb5780b9d0eb0fdfd0dde73afb5b4886a23e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CAMHO2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7561f7a01a20ee497a731aad88a5d7e5e1600ede9c82789e2459c58164b8c5f0. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:54:52Z), 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/CAMHO2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e4c9a67f561792143256b4057eb2e9cfd95e5c4e4518214f775bd129629f6a. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/CAMHO2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0617fca7df29f67022306d291142072a455cb8f435b13c1fb14ae5c37c8d29f8. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/CAMHO2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884ba6d2577854de9172b1b9cd847f6269ba71ceada4e416d50a43f5ae546b73. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CAMHO2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600675df3750170405b616bad751e249278fa4c3032abca7f67d2cc151feee04. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/CAMHO2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd3a91d07a5c5416b5245866f3200c94fd7c2070072a6c654c7ddb1d1574624. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/CAMHO2400001.