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 0xc16bb4baa9167c10a441ba0d7cfc2a2b1847f3ee767d41439163bc0fc33f20c9. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa9c4289-159d-4344-82a5-15f22a2de3ab.json and https://artists.proofprofile.net/proofs/artist/aa9c4289-159d-4344-82a5-15f22a2de3ab.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 0x1e2ff0869f458535299ba76899fae341049fda12751a458d5a8430c1c6d60cee. 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/JPX262100153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06fd673b2171488c42f0550617684587e28348f96f34d81586de693a2f04ebec. 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/JPX262100131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2567ab7ed6bb2249f24684712ca519e1251cad8c3229fa4fc66743ad543e44d. 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/JPR502146774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c87c3a74e6034a7f03b4fb4ff19cea4ec5a94a175884ea7b65bb930317d3a98. 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/JPR502146753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a3681c88139b46438671c44233c108f4f4ca7940f137395fcf0aa32fa101c2. 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/JPR501927720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94ccefb0ffac529b70f7cbbeca47507c4d261b0b2965c098012a75ce66ecb44. 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/JPR502146754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894eb734d98d2dd7f8005f6fce5562a424b34f8b78478577dd32cdc3ed26cea2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPR502146775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356e046d939b3b5e31165590f8fbb52957100a742c1a7528b18d02e6ab3fb25d. 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/JPR502146757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb7f5d99f87154360ddf58d624e73012e646f988ae43f55593ce5202bdcb5fe. 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/JPR501929922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025ea090bfc6fda16f75e1879a80b239145ee33dad5e9434bbb9a2ce0374ba4d. 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/JPR502146777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72352090e767191746b5c08d42a3cbf0867db396a0dec41f23c63fea23a46f3a. 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/JPR502146779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135a73edca5e740aa45db2e6764b00a986877901c8e59f5b67ad2ec85aec6bf9. 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/TCJPX2377755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a04acd59f21cb11058c111ea630cbd3b5feeff979fc39655e0199982808f3b. 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/JPR502151384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2765f1aef221c7e5e92096a1bd69069de36d9a7c8c251078c9714658300c5e2d. 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/JPR502151390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f73534a856ffb3c7e1d1109eba03b498fb456ebf6410c46c71462aa9c55a7e. 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/JPR502149488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb7f5d99f87154360ddf58d624e73012e646f988ae43f55593ce5202bdcb5fe. 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/JPR501929922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0fe2ca048cf4669638dff7258520242647f9331d0033701ab2c5d78241c0537. 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/JPR501929923.