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 0x83fae496809b692ca154f872ed0094965627de0fec7f163bc48f657d737d610a. 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/4aacac6a-bc88-4739-8449-180754626ec9.json and https://artists.proofprofile.net/proofs/artist/4aacac6a-bc88-4739-8449-180754626ec9.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 0xe10ef833e8d70a2ca8d5aad194ab2946b42c89c21bd5feba6408df022c2cc9d3. 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/QMBZ91934644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32f223538cd30a58c5e02abe9b1feb37abd317a33f5a3c9ccd3f6387bafde23. 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/USHM91647170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb350425b5aebb7e82c1748399c596ce5652415024ac1ff577ba2fc62f2ab41a3. 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/USHM91647171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09385fcd2254dabd06b036a35e6928c4b2baec6f454f2a8cf570b27a117a7734. 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/USCGJ1648966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf75b63e868c20fe961fa796281683d8d7de9417cdd402f6a5f622bd4add7a1. 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/USCGJ1648972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc05f7961f72459c92db694104b25baf87e26443f521e2e7ad5600b7e2d85bb. 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/QMPKX1790887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9735e30f92da8625ae6764502e6510c3cd545e3959996ca19881b3944c640d95. 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/USA2P2104190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe9957d93cea7ffbb937304679857a9152d54dc88d6ced80a432e93900c143f. 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/QMDA71879328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66d01f6ec7a6e8da978326922a6266c849597d0f414d6164283d7104f2f409e. 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/ESA011712828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e081f79aae03f35b814a30b9d7badc6aa58239cf0992315cd8ca2abd6f3f284. 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/USCGH1760011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6ed708007f5a6fae627115caea7f7357407552856dbcc317e60e32a3c952d4. 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/USCGH1760003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a42a2514306be699687c6ff5b3bad65c942829d5367f6a008bf41ce9077f792. 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/QMBZ92467327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5024998c9832a949652980960565de9252431af1b9beeba837406b16bd3e7375. 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/QMBZ92467490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528a3fa08eb131ae5e392655dbab5ef315e9cc0fb836b928a3285e6735ddcf10. 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/USUYG1130841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa04e584d3c6f96d55cd4c5e7cb249aa233a2c951a2b9ff28a14ce478c7e8d0. 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/USUYG1130842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90d49ae39ff610a0f57ad0624ed8d13a8797e116940996b61437f35e059a435. 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/USUYG1130843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2dcb872da3547976bff1f9274795b1eb89220ebf27b5c5a0863b700e12ea938. 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/USUYG1130844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280e9532d0825c035b6781665e6a62666c2f368815869587e2f6cc244e35b73a. 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/USUYG1130845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074336f1d0273fd18aabf15c72bdbdbd23297d976a9ed83e6909051ec5d926b8. 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/USUYG1130846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78987512e4da30ab4fba0843dedcb0d35795bac96abcba7ff3ce33d8ab5f0487. 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/USUYG1130847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e9cf994d3d50bdd014222c4e1691ba82b53dad19910d82cdcaaf249823d33b. 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/USUYG1130848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab78ddff4d9986f23240b68a4d23042c0c7aa907391977198afe80517d23f1f. 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/USUYG1130849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0fbc95f8dec322d8d302c3e81b2e12b043820e660eedc0799723293176c69f. 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/USCGH1759980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fcb9150583a0e7e51c280caa2a51c2b9b1adb6101227e61931832f050cc1f56. 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/USCGH1759982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991b6735e74808058293a280a43450d0f02ce056f9a9cbd47ceb59de70c375a5. 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/USCGH1759984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908b23dfbedd2376f2d8c08612adde7910aa5a5dedc830c0c06293e09574bc1a. 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/USCGH1759989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02985ab9fa23cb80914d5c78e14a1eda033fd0f3b8e7cb1368dc85c3b04fda26. 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/USCGH1759993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f845ee206a5a8aeae14d9231e075135c65bce17ca06fc530412474601b3da4b. 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/USCGH1759996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7605836dce498b974c899032f05bfd1dbecf6e00dc9d0143b5cca439838d06b3. 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/USCGH1759999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027430bd981ce9346d366f4142b903c6d132aedd3a9f1937001e9082306ed026. 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/USCGH1760002.