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 0x08e5ff310ec4addd958006e1be08acbcb218112b366bf6539b5395290db24705. 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/1098beb0-e338-4237-bccd-6264473db47d.json and https://artists.proofprofile.net/proofs/artist/1098beb0-e338-4237-bccd-6264473db47d.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 0x543be73b7e4420ffc338392f608ed49fa3c69b1e29cc5ffc8ce272385d63b00a. 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/JPU902400802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33b5cc9621c7d87954ce3534f7ebac24ee89bca9fc02f967ba21753787320be. 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/JPU902300370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9face6706b4ada5fa70d6db2d4dbab1d06c473a2a169056c35ddbb2c44b9ae. 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/JPU902305478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f36c31c2b670ecfbae25c43166caaf47092f7fa9180ef6464b128998a93a9a. 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/JPU902302339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556ab01c046bbe538c569e6724628d878cee06e4156d800d569777cd4f808e5b. 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/JPU902305170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1db0850fe0191d3e6683c94a1a5b75aa769ccb32bd193c052d1d2adc766b624. 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/JPU902400803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe205d7aa77e86fbbf34c23103dec748a6f54719b0965cf3d436698a9a8035aa4. 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/JPU902204065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa602fe5cf32e31d1877cf92b7b5b270433f2cc26ecc82fa44da3cff05451091d. 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/JPU902400805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64868fcd216e2c77eed58fa77297d1cc31d27ebefd4e1ea626548330a264bfce. 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/JPU902400804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022b1ef8a1179ff64e3e35377954a11b5c0609da55b68f3cc4169e756bbbce75. 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/JPU902402337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3761ca57b94bd20f2a8b5f9b1daba2ccb1e5a5650841948397d4704e1a5796. 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/JPU902401602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543be73b7e4420ffc338392f608ed49fa3c69b1e29cc5ffc8ce272385d63b00a. 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/JPU902400802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9face6706b4ada5fa70d6db2d4dbab1d06c473a2a169056c35ddbb2c44b9ae. 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/JPU902305478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556ab01c046bbe538c569e6724628d878cee06e4156d800d569777cd4f808e5b. 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/JPU902305170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33cf6a9c12a752d14d349afa0fcada2dd711b2f6c3e93af19815ee2042bd00c8. 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/JPU902304376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33b5cc9621c7d87954ce3534f7ebac24ee89bca9fc02f967ba21753787320be. 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/JPU902300370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe205d7aa77e86fbbf34c23103dec748a6f54719b0965cf3d436698a9a8035aa4. 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/JPU902204065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384c2e890938f652ac9052ae34061ac7aa062307619a1a6c685f99cd570df00e. 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/JPU902501567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60330f354e5663efff3f2bdfa295235d3a9a8dbc0c6876400b6bcd37bf3dd834. 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/JPU902501116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15bf89548966adf3652f8e20d8633bde0a66cb8aa0b7172949f792ad0c5a0df8. 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/JPU902500153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161a7ee2b81f5189f0128d5dfbb33dd7295d4494987697c88ccb3d239c67e944. 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/JPU902404365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84020718e804d9a19705abbeaf2f145b5030452c3350a41b2d2774453a2614c. 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/JPU902403689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658206e0210afed3c348cb6bdcd717e4a06ef65c2a779f4f1afda9f9cc3fb1c6. 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/JPU902403276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466e687cb09adeece5ce2c18dbf2857e94039d3039df186463e937d521f2086a. 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/JPU902403277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553925a404c62e11e3fd2adff0837bbde854c7e6c9108f2b856a3621c2367663. 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/JPU902403278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c864351f6b837d56a5265237303abcf85e24ccdfb07da724ecc5edad8b2f5ec. 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/JPU902403279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482eeb57c6310f99256118bc01c9c482e5ca642fecca1d640be1dcc6d34ab5f8. 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/JPU902403280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d1a558dc3986626d0066a1d1aaba4b7616399aa61a40052d9721abbae85eab. 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/JPU902403281.