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 0x4528040d4f225b23528f21f7eed8d695e8fe9f98ba406b9a6f4eacbbbfef6d9a. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bfd44141-b4d9-4507-aa30-1b2f861efa82.json and https://artists.proofprofile.net/proofs/artist/bfd44141-b4d9-4507-aa30-1b2f861efa82.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 0x7c5d361b171bd826af8ad8d18e4aaa3f6c47b9bfb449ca1e84ddfd9621dda06c. 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/TCACL1628890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683e7b511fe92014e7438381cb443d1461f5c811d19ae159b116990691113b46. 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/TCACL1628895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59487afd7e65c0dfad374d05ca5ee33ee0efe79e87e7fb10eeb72949cd7dbd8. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/TCACL1628891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174d8eb6cd6b498c2d3b8f0e06cbf4e411df72af6832a61d1c3010a763f7de9d. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/TCACL1628892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ab7ca89cc928635c3c2722f1a9b4a8ff6361efba2dfdc1313682c8e42fdf26. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/TCACL1628894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe591ddf16a2021d9715c6a83a383c7e5f55fdc3001707a43e7a2c9fa2f973ec. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/TCACL1628896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4abccfc05d377867ebb870bbf5caed2ea44bd39f0a6bc1b5e6e9b535bc104ef. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/TCACL1628897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb39fe82e8a437a47fd2ee3583c00af8525984eae91b9613faf3e63cadb98501. 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/USHM92482115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e3c521a2e98481c3b7e2bdf94a247ef3bc4be804566c426be82db02c3ce5ca. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USMH92340731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd884673973bfea23d10493587cdc7728dfc979c16cbd6011072ba93a96d79e. 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/USHM92234465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e0d4340a40d5120fd138d97fd6d32cce3cfc9adfd387e5855925ae9bff0fc3. 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/USHM82218611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ed460b88bb9883567b6d0251b77f1d9e123b7d49439bcdd3474044364df43c. 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/USHM92234466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d18abc82269a125e5aea265b69cd1249cfc09c1fb723a6f03043b106080c1e. 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/USHM92234467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e0436e25a880dd7c6ea44f84411ce7e42c5e70b3cef17354d048d19c548f40. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/USHM82294646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5b2399996d51e1b00627eefbfacc31e9159bb79f18f69b0c0d4bc321da3052. 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/USHM92021785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b08cf0907136e8ff4cd3660999f831bdb29fcfb12b798519556bdb65d25344c. 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/TCADL1839210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec438616b3f979e874fc3d0547c2862bdf4f8c1016d77b1a0e234e74bd7b6d5. 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/TCADL1839211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818fc924c5a1ea4b7407a18d3832a943f50f7b4b9bea1bee5fde894dba8a5cb5. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TCADL1839207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89351097f9d04598a1cdcd9778ead7481a29fa763eaa46bc3d121aed9518c752. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TCADL1839212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68bbb20bf473002132cca1c890c8d63f437cfc2d88e1c8f15a711d8d018c13f. 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/USCGJ1417336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae15142f820e8db40d3ddba03119980358273efcedd956f83fcf0ba7c74eb37. 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/USCGJ1417337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87cc566be6a4021ce375bc45f250f6dc8e2bb43a072432b18cde811622141d9. 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/USCGJ1417338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02e4aa57637ae0d5446e142e7ee5534fb40a4427c4066ad2b8ce44a9a8269c1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USCGJ1417339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b53e3893c9d65471e630e037ee4b46025df3cdb86510c98e3825628b7a1a4d0. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/USCGJ1417340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7947eeae8203b44eb521703c381109bac8c109ce6f6344fb73ea416bb172210e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USCGJ1417341.