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 0x93dfa581e21527b6bde8882499d689e901345a6f5143625bcd78bd78d7f6231d. 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/64c66988-b36b-4b4b-ac91-292805e799af.json and https://artists.proofprofile.net/proofs/artist/64c66988-b36b-4b4b-ac91-292805e799af.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 0xf5649f00d6013371ca6332c6dbda1d79db623f45345dabd0f386bc85492cb4b7. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:47:20Z), 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/DEZC62129741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4eecc6163780b6dca224a6dea2a5c52d85f4dcd334b2d76e3db8390eae1810. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:11:38Z), 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/DEZC62255094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9dd5ae3439a70082dd65cd9be769f9c5a5e7dd5da7a6a05e9e190bf53f1b369. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/DEZC62271793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5fd05263347050e6b50726a1020040cac35170c6ac37ff4c8bab55c6c561e8. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEZC62278404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12df01265f4dcdbe77e41189ddd93a2d3ae8b2221c4f7f24078fb6b81a0148a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEZC62278406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f00ce800a1b111f207ba6777d11d5f48eee0ee403cae926c369801a36448f9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DEZC62288993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d7031da9322b4f969ef832f1dd3e22c59863fe6a378c7547f55f0d112b6e2a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEZC62329573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c15a45e113a08a0a243621e3c618b9d54b77aa165914a9155b48eef1e60492c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEZC62354101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eed0227cceecc3f56bf318dbb724c72b848fddcffeac04448e2b3fef801cda0. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/DEZC62375616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff7df23a7468e4b6c974f701c01061bdee391a117892bf1b4ef8247b7f68a7e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEZC62375618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29f92c2ba1791daecfb9e20b381513484ec37bef995242c80f99371bc146660. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEZC62448847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c13adb95bbc7b85911897edcfd06510a66da8fa641a17f9a9a5b2ed6edcbf3. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:02:01Z), 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/DEZC62448849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b87a38ac15176a5989215ec6680a33ca7c3e7511f23790141f9e03023b6e80. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEZC62448851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29f92c2ba1791daecfb9e20b381513484ec37bef995242c80f99371bc146660. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEZC62448847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07834f7f06a56107d96c22c3db2abd911155ac943903ace213bae33716d08f8d. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:59:37Z), 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/DEZC62468595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123a872dc98fcb40d981ec468274111551a0e5e1964ff561d4c4d9a6f80a19e5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEZC62417749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff7df23a7468e4b6c974f701c01061bdee391a117892bf1b4ef8247b7f68a7e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEZC62375618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4989df7f1c01ef021a350a66134e242372c93edbd401ccd72da70b2d014af8. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:57:45Z), 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/DEZC62579696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72bc087bb362f72b51c20cf97bb379773800911e77b4cb43407c038fc1b3ae45. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/DEZC62585468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6560955578f33dd543d74f558d23a31103bb1d68f8fca5f2519f6c0154db2915. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:38:34Z), 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/DEZC62511411.