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 0x6a9db001a3c6601c9afeeaa28113bd1596505b3bbb2e4d72ed6f0fc76a2dc98a. 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/c1b19935-dc82-4560-be91-eddfb6f7bba4.json and https://artists.proofprofile.net/proofs/artist/c1b19935-dc82-4560-be91-eddfb6f7bba4.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 0xcdf3e32329e5b145d85adc62b5f556c8c87b3931008b67e1971565f2f1c54507. 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/CNC072100668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7a60335c24fcc819e66d9bd5a55e368d2a64bac8ab593f3e59bc397936a0e1. 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/CNC072100664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9947bafbfe63313c58e478b13142d6ba4c9e3720e755b8f9cc8b098845a3a1c. 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/CNZ682000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c97f831a0cf6a57763a2722c748d7b40f98a92e9418234e792e84d74e0562b. 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/CNC072100634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8f950f46a1918aaa1e0d3dd04547c0121cfa3882adf5721c2edc530e04078f. 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/CNZ681900161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a40bb33322f7b5fdbeef14da65e726720c344a0edd84b4f20bb89d45501dab8. 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/CNC072100666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179dd8abb4bb36108b299bb82856be190614e4da231f15fab0336f2af281ec05. 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/CNC072100650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae8ad3bffc4273c675e2abf63c959dd5b3bd5d90ac7b932536cdcd1ced54210. 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/CNC072201065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb64e4bc82584f77b759dd8e5d3ac812ada724ba4c70800383d0545b3e82107. 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/CNZ682200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f7b58de13bf7d73f47a40fe4fdb2cef4af279c2c805d0c005c8739104fe5d3. 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/CNC072201059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e4af6c9c296de5797217951f21a2c81bf2b8d585214964a337f2ac5b48719b. 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/CNC072201058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02589c9116a9515b9a6255c4e7b1074fe45534113c7c2f4b88f29fa0678aecd2. 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/CNC072201063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158f078b2b2d54281686dc9a95edd66bc1b943ce6732d5905fd5b8bc5e26c3f1. 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/HKG732429925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb235d472fe143c4804bba207b04078bca770736bcb1fc7f7fd89ed92e0ab584f. 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/HKG732429930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10dbb01ad8ed42e1a686df058cc2278ed1cc0cc7b2f434429a72b340585330d0. 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/HKG732429931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe743a7d22780417c8bbb2619288edf35673a05e972fc892d294741c119369977. 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/HKG732429935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835da9b125272016e17140469e06ca92d5ee79a7bb07c20e7a2159b14de05fe2. 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/HKG732429936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd142945a5cf91cb089c5b425fdcc4fd0f403a345d5b4d31150898b58485a2c95. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/CNZ852308440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1229682b8b17d258b0d49ec7c702a27c1f4707c528b9a1a73e40b4df5f76d347. 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/HKE672400470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb4850a522c8a86d1f00df05dd9ff225f33ef47f52e6c822f8927771094ba10. 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/TWAE32100719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49608babc214854efee79f578eef913befb15f7728488e4c612f2f1a3c7842e0. 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/CNZ632201365.